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| Boilerpipe Text | From Wikipedia, the free encyclopedia
This article is about Tesla battery energy storage device for electrical utility use. For other uses, see
Megapack (disambiguation)
.
Tesla Megapack
Tesla Megapack set of 4 with
solar canopy
3D sketch
Type
Grid energy storage
Inception
June 2019
; 6 years ago
Manufacturer
Tesla Energy
Website
tesla
.com
/megapack
The
Tesla Megapack
is a large-scale
rechargeable
lithium-ion battery
stationary
energy storage
product, intended for use at
battery storage power stations
, manufactured by
Tesla Energy
, the energy subsidiary of
Tesla, Inc.
Launched in 2019, a Megapack can store up to 3.9 megawatt-hours (MWh) of electricity. Each Megapack is a container of similar size to an
intermodal container
. They are designed to be deployed by electric utilities. The energy stored can be used as required, for example during periods of peak electricity demand or when grid power is disrupted.
Tesla Energy also offers the
Powerwall
, a smaller energy storage device intended for home use.
Tesla Giga Nevada, where the Megapack was designed and is manufactured, along with Lathrop
On April 30, 2015, Tesla announced that it would sell standalone battery storage products to consumers and utilities.
[
1
]
Tesla CEO
Elon Musk
stated that the company's battery storage products could be used to improve the reliability of intermittent renewable energy sources, such as solar and wind.
[
1
]
Prior to the Megapack launch, Tesla used its 200 kilowatt-hour (kWh)
Powerpack
energy storage product to meet the needs of utilities with large-scale storage requirements such as at the
Hornsdale Power Reserve
.
Design work began on the Megapack project at
Giga Nevada
at least as early as the first half of 2018.
[
2
]
In July 2019, Megapack launched.
[
3
]
It was described by Tesla as a utility-scale energy storage product, suitable for power stations and utilities.
[
3
]
Tesla claimed that Megapacks would be compatible with Tesla power station monitoring and energy control software, Powerhub and Autobidder.
[
3
]
The company stated that Megapack was designed to meet the needs of large-scale battery storage projects, as with the Powerpacks.
[
3
]
Tesla acquired a former
JCPenney
distribution center in
Lathrop, California
, in 2021 and converted it into a
battery plant called Megafactory
,
[
4
]
with a target capacity of 40 GWh/year when finished.
[
5
]
Next-generation Megapacks use prismatic (rectangular)
lithium iron phosphate
(LFP) battery cells,
[
6
]
for example in the 585 MWh
Kapolei, Hawaii
facility from 2024.
[
7
]
Tesla's LFP cell suppliers include China's
CATL
and
LG Energy Solution
which has factories in South Korea and the US.
[
8
]
Tesla's energy deployment added 3.9 GWh in the first quarter of 2023.
[
9
]
The combined delivery of storage (Powerwall and Megapack) was 6.5 GWh in 2022, 14.7 GWh in 2023, and 31.4 GWh in 2024.
[
10
]
In 2023, Tesla announced a new "Megafactory" in Shanghai to manufacture Megapacks, with the goal of producing about 10,000 packs per year,
[
11
]
and the factory started low rate initial production in late 2024.
[
12
]
Tesla builds a service facility at the 877 MWh
Collie battery
in
Western Australia
, to repair and remanufacture batteries in the state.
[
13
]
On September 8 2025, the company announced a new product for late 2026, called "Megablock", which consists in up to 4 Megapacks version 3 connected with a transformer and a switchgear. Each Megapack 3 is 5 MWh (and 39 tonnes), so each Megablock is 20 MWh. They will be produced in Tesla new facility in
Houston
,
Texas
.
[
14
]
Model
Unit Cost
Capacity
Power
Round Trip Efficiency
Dimensions (
W x H x D
)
[
15
]
Cycle Life
Weight
[
15
]
Megapack
$1.24M
2.6 MWh
[
16
]
1 MW
[
17
]
23.52 ft × 8.27 ft × 5.44 ft
(7.168 m × 2.522 m × 1.659 m)
56,000 lb
(25,400 kg)
Megapack
2
$1.47M
3.854 MWh
1.284 MW
92.0%
23.79 ft × 8.22 ft × 5.37 ft
(7.25 m × 2.506 m × 1.637 m)
67,200 lb
(30,500 kg)
Megapack
2
XL
$1.39M
3.916 MWh
1.927 MW
85-90%
28.87 ft × 9.14 ft × 5.41 ft
(8.8 m × 2.785 m × 1.65 m)
3,000-5000 cycles Tesla
.com
84,000 lb
(38,100 kg)
Megablock 3/ Megapack 3
estimated on Megapack pricing around $1.39M. 40% lower installation costs with 78% fewer connections.
5 MWh
tbc
91%
tbc
>10,000 cycles
86,000 lb
(39,000 kg)
Each Megapack comes with a 15-year "no defect" and "energy retention" warranty.
[
17
]
A 10 or 20 year "performance guarantee" is available for an additional cost.
[
17
]
Once a Megapack has reached the end of its useful life, Tesla says they can be
returned for recycling
.
[
18
]
Megapacks are pre-assembled, including "battery modules, bi-directional inverters, a thermal management system, an AC main breaker and controls."
[
19
]
Tesla requires customers to purchase a maintenance service agreement. Each Megapack receives a minor annual service, and a major service every ten years. The annual maintenance includes inspections and cleaning. The ten-year maintenance includes activities such as replacing the pump and fan for the thermal management system and refilling the coolant fluid.
[
20
]
Maintenance is expected to take about an hour per Megapack.
[
18
]
The Megapack thermal management system is located at the top of each unit.
[
18
]
It uses coolant fluid, made of an equal-parts mixture of
ethylene glycol
and water, to keep the battery at operating temperature.
[
18
]
Each Megapack 2XL weighs approximately 84,000 pounds (38,000 kg) and the enclosure is built to a similar size as an
intermodal container
and includes
twistlock
fittings to allow automated handling.
Tesla Megapack site with
solar canopies
[
21
]
3D sketch
Grid batteries are used for
ancillary services
such as control of frequency and phase,
black start
,
operating reserve
etc.
Megapacks are designed for large-scale energy storage. Megapacks are used by utilities to replace or augment
peaker power plants
,
[
22
]
which generate energy during periods of peak demand. Megapacks store grid energy rather than generating it from fuel.
[
23
]
In some areas, energy storage has become a requirement to help convert
intermittent energy sources such as wind and solar
into firm power.
[
24
]
Other energy storage solutions, such as
pumped hydroelectric storage
, dominate the time-shift market. As of 2019, pumped hydroelectric storage accounted for 96% of global energy storage capacity.
[
25
]
Pumped hydroelectric storage systems have lower efficiency, but longer lifetimes than battery storage.
[
25
]
Batteries may be deployed more quickly than other storage technologies.
[
26
]
Supercharger stations
[
edit
]
3D sketch of
Tesla Supercharger
station with
solar canopies
and 8 Megapack set for close to 32
MWh
Megapacks have been installed at
Tesla Supercharger
stations that also have
solar canopies
to help power the Megapacks.
[
27
]
Megapacks can smooth out
electric demand
on the local power grid and use the stored Megapacks electricity during
peak demand
so there are not excessive surcharges on electricity to charge the electric vehicles.
[
28
]
To support summer travel Tesla claimed in July 2025 to have connected for the first time a mobile Megapack to a European Supercharger, the
Otočac
station in
Croatia
.
[
29
]
In November 2019, Tesla used a Megapack to power a mobile recharging station for Tesla electric vehicles in California.
[
30
]
The mobile Supercharger delivered 125 kW, and was transported on a flat trailer attached to a truck between deployment locations.
[
30
]
In December 2019, Tesla delivered a 1.25 MW/2.5 MWh Megapack to the
Millidgeville
Substation in
Saint John
, Canada for
peak shaving
.
[
31
]
[
32
]
The battery is estimated to save owner Saint John Energy CA$200,000 per year.
[
33
]
It became operational on April 3, 2020.
[
34
]
The 300 MW/450 MWh
Victorian Big Battery
near
Geelong
, Australia,
[
35
]
constituted the largest battery in the southern hemisphere at the time.
[
36
]
The
commissioning
process was halted due to a fire (see "Safety" section), and the lessons learned were applied to other batteries.
[
37
]
The battery was commissioned on time in December 2021, a year after contract,
[
38
]
with an estimated
return on investment
of 2.4.
[
39
]
In December 2021, Strata Solar, an American commercial solar services provider, deployed a 100 MW/400 MWh energy storage facility in
Ventura County
, California, using 142 Megapacks.
[
40
]
The deployment replaced a natural-gas peaker plant.
As of June 2022,
Pacific Gas and Electric Company
(PG&E) operates a
182.5 MW/730 MWh 256-Megapack system at Moss Landing
, in
Monterey County
, California.
[
41
]
[
42
]
[
3
]
[
43
]
TransAlta
owns and operates a 10 MW/20 MWh Megapack system near
Pincher Creek
, Alberta, Canada, which was completed in October 2020.
[
44
]
As of July 2024, it is one of ten active storage sites in Alberta,
[
45
]
and all are Megapacks.
Grid-scale battery standards and fire containment practices are at an early stage of development.
[
46
]
Fire risks are one factor that has delayed the deployment of some utility energy storage systems. Most battery fires cannot be extinguished with water, which is the primary firefighting technique in most communities. A fire in a single cell can cascade to others via
thermal runaway
, possibly in milliseconds, potentially creating a major hazard.
[
46
]
Preventing fires involves multiple layers of protection. First, is to prevent fire in a single cell, by eliminating sparks and short circuits. However, grid-scale systems face potential problems such as coolant leaks and faulty installation. Venting flammable gases and improved insulation reduce cascade risks. Placing controls outside of the container gives more management options. Instead of suppressants, monitoring the situation while watering surrounding areas can help contain the fire. Sensors that track local weather conditions can help avoid overheating. Lithium-free designs with lower fire risks are possible.
[
46
]
"Plume modeling" attempts to predict how gases from burning battery chemicals might travel. The gases produced vary across battery types,
hydrogen fluoride
(HF) is of particular concern even at low concentrations. A later plume analysis by Vistra reported that concentrations of HF above California exposure limits could spread across an area 1300 feet in diameter under wind conditions that occur 7 percent of the year.
[
46
]
In
Raquette Lake
, New York, the town passed a one-year moratorium preventing battery installation in response to protests citing fires at three New York battery installations. Protestors cited a fire in
Lyme, New York
that burned for four days.
[
46
]
A Megapack ignited at Pacific Gas and Electric's (PG&E's) Moss Landing, California facility in September 2022. The fire led to a day-long shelter-in-place advisory. PG&E stated that safety measures included thermal alarms that can shut down the system, an incident command center, an audible evacuation alarm, pre-fire planning with local fire crews and emergency shut down protocols. Heat-suppression systems, intended to curb thermal runaway, were accidentally triggered, dousing batteries in water that caused arcing and short circuiting. The plant was shut down for months.
[
47
]
Vistra's third installation in Moss Landing adopted the outdoor container model instead of putting the racks under a single roof. (Vistra stated that the outdoor design was chosen to expedite construction.)
[
46
]
[
48
]
In July 2021, one of the 212 Megapack modules at the
Victorian Big Battery
project caught fire
[
49
]
due to a coolant leak while the battery was unmonitored. That ignited the adjacent Megapack.
[
37
]
Three days later, the fire had burnt itself out as preferred by the fire department.
[
50
]
[
51
]
[
46
]
A 50 MW / 100 MWh battery project using Tesla Megapack 2 was under construction in
Bouldercombe
near Rockhampton, Queensland.
[
52
]
The
alternating current
section caught fire in September 2023 and spread to the cells of one Megapack module, also damaging the adjacent module. Both modules are being replaced by Tesla. Other 36 modules were operational a couple of days later.
[
53
]
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## Contents
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- [1 History](https://en.wikipedia.org/wiki/Tesla_Megapack#History)
- [2 Specifications](https://en.wikipedia.org/wiki/Tesla_Megapack#Specifications)
- [3 Terms](https://en.wikipedia.org/wiki/Tesla_Megapack#Terms)
- [4 Design](https://en.wikipedia.org/wiki/Tesla_Megapack#Design)
- [5 Applications](https://en.wikipedia.org/wiki/Tesla_Megapack#Applications)
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- [5\.1 Peak power](https://en.wikipedia.org/wiki/Tesla_Megapack#Peak_power)
- [5\.2 Time shifting](https://en.wikipedia.org/wiki/Tesla_Megapack#Time_shifting)
- [5\.3 Supercharger stations](https://en.wikipedia.org/wiki/Tesla_Megapack#Supercharger_stations)
- [6 Deployments](https://en.wikipedia.org/wiki/Tesla_Megapack#Deployments)
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- [6\.1 Completed](https://en.wikipedia.org/wiki/Tesla_Megapack#Completed)
- [7 Safety](https://en.wikipedia.org/wiki/Tesla_Megapack#Safety)
- [8 See also](https://en.wikipedia.org/wiki/Tesla_Megapack#See_also)
- [9 References](https://en.wikipedia.org/wiki/Tesla_Megapack#References)
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# Tesla Megapack
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From Wikipedia, the free encyclopedia
Large-scale battery energy storage product manufactured by Tesla Energy
This article is about Tesla battery energy storage device for electrical utility use. For other uses, see [Megapack (disambiguation)](https://en.wikipedia.org/wiki/Megapack_\(disambiguation\) "Megapack (disambiguation)").
| | |
|---|---|
| [](https://en.wikipedia.org/wiki/File:Tesla_Megapack_set_of_4_with_solar_canopy.webp)Tesla Megapack set of 4 with [solar canopy](https://en.wikipedia.org/wiki/Solar_canopy "Solar canopy") 3D sketch | |
| Type | [Grid energy storage](https://en.wikipedia.org/wiki/Battery_storage_power_station "Battery storage power station") |
| Inception | June 2019; 6 years ago (2019-06) |
| Manufacturer | [Tesla Energy](https://en.wikipedia.org/wiki/Tesla_Energy "Tesla Energy") |
| Website | [tesla.com/megapack](http://tesla.com/megapack) |
The **Tesla Megapack** is a large-scale [rechargeable](https://en.wikipedia.org/wiki/Rechargeable_battery "Rechargeable battery") [lithium-ion battery](https://en.wikipedia.org/wiki/Lithium-ion_battery "Lithium-ion battery") stationary [energy storage](https://en.wikipedia.org/wiki/Energy_storage "Energy storage") product, intended for use at [battery storage power stations](https://en.wikipedia.org/wiki/Battery_storage_power_station "Battery storage power station"), manufactured by [Tesla Energy](https://en.wikipedia.org/wiki/Tesla_Energy "Tesla Energy"), the energy subsidiary of [Tesla, Inc.](https://en.wikipedia.org/wiki/Tesla,_Inc. "Tesla, Inc.")
Launched in 2019, a Megapack can store up to 3.9 megawatt-hours (MWh) of electricity. Each Megapack is a container of similar size to an [intermodal container](https://en.wikipedia.org/wiki/Intermodal_container "Intermodal container"). They are designed to be deployed by electric utilities. The energy stored can be used as required, for example during periods of peak electricity demand or when grid power is disrupted.
Tesla Energy also offers the [Powerwall](https://en.wikipedia.org/wiki/Tesla_Powerwall "Tesla Powerwall"), a smaller energy storage device intended for home use.
## History
\[[edit](https://en.wikipedia.org/w/index.php?title=Tesla_Megapack&action=edit§ion=1 "Edit section: History")\]
[](https://en.wikipedia.org/wiki/File:Tesla_Gigafactory_1_-_December_2019.jpg)
Tesla Giga Nevada, where the Megapack was designed and is manufactured, along with Lathrop
On April 30, 2015, Tesla announced that it would sell standalone battery storage products to consumers and utilities.[\[1\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-Castelvecchi_2015-1) Tesla CEO [Elon Musk](https://en.wikipedia.org/wiki/Elon_Musk "Elon Musk") stated that the company's battery storage products could be used to improve the reliability of intermittent renewable energy sources, such as solar and wind.[\[1\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-Castelvecchi_2015-1)
Prior to the Megapack launch, Tesla used its 200 kilowatt-hour (kWh) [Powerpack](https://en.wikipedia.org/wiki/Powerpack_\(Tesla\) "Powerpack (Tesla)") energy storage product to meet the needs of utilities with large-scale storage requirements such as at the [Hornsdale Power Reserve](https://en.wikipedia.org/wiki/Hornsdale_Power_Reserve "Hornsdale Power Reserve").
Design work began on the Megapack project at [Giga Nevada](https://en.wikipedia.org/wiki/Giga_Nevada "Giga Nevada") at least as early as the first half of 2018.[\[2\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-Lambert_2018-2)
In July 2019, Megapack launched.[\[3\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-blog-3) It was described by Tesla as a utility-scale energy storage product, suitable for power stations and utilities.[\[3\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-blog-3) Tesla claimed that Megapacks would be compatible with Tesla power station monitoring and energy control software, Powerhub and Autobidder.[\[3\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-blog-3) The company stated that Megapack was designed to meet the needs of large-scale battery storage projects, as with the Powerpacks.[\[3\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-blog-3)
Tesla acquired a former [JCPenney](https://en.wikipedia.org/wiki/JCPenney "JCPenney") distribution center in [Lathrop, California](https://en.wikipedia.org/wiki/Lathrop,_California "Lathrop, California"), in 2021 and converted it into a [battery plant called Megafactory](https://en.wikipedia.org/wiki/List_of_Tesla_factories "List of Tesla factories"),[\[4\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-MR_Bulletin-4) with a target capacity of 40 GWh/year when finished.[\[5\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-5) Next-generation Megapacks use prismatic (rectangular) [lithium iron phosphate](https://en.wikipedia.org/wiki/Lithium_iron_phosphate_battery "Lithium iron phosphate battery") (LFP) battery cells,[\[6\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-Lathrop_MF-6) for example in the 585 MWh [Kapolei, Hawaii](https://en.wikipedia.org/wiki/Kapolei,_Hawaii "Kapolei, Hawaii") facility from 2024.[\[7\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-7) Tesla's LFP cell suppliers include China's [CATL](https://en.wikipedia.org/wiki/CATL "CATL") and [LG Energy Solution](https://en.wikipedia.org/wiki/LG_Energy_Solution "LG Energy Solution") which has factories in South Korea and the US.[\[8\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-8)
Tesla's energy deployment added 3.9 GWh in the first quarter of 2023.[\[9\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-:0-9) The combined delivery of storage (Powerwall and Megapack) was 6.5 GWh in 2022, 14.7 GWh in 2023, and 31.4 GWh in 2024.[\[10\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-10)
In 2023, Tesla announced a new "Megafactory" in Shanghai to manufacture Megapacks, with the goal of producing about 10,000 packs per year,[\[11\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-11) and the factory started low rate initial production in late 2024.[\[12\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-12)
Tesla builds a service facility at the 877 MWh [Collie battery](https://en.wikipedia.org/wiki/Collie_Power_Station "Collie Power Station") in [Western Australia](https://en.wikipedia.org/wiki/Western_Australia "Western Australia"), to repair and remanufacture batteries in the state.[\[13\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-13)
On September 8 2025, the company announced a new product for late 2026, called "Megablock", which consists in up to 4 Megapacks version 3 connected with a transformer and a switchgear. Each Megapack 3 is 5 MWh (and 39 tonnes), so each Megablock is 20 MWh. They will be produced in Tesla new facility in [Houston](https://en.wikipedia.org/wiki/Houston "Houston"), [Texas](https://en.wikipedia.org/wiki/Texas "Texas").[\[14\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-14)
## Specifications
\[[edit](https://en.wikipedia.org/w/index.php?title=Tesla_Megapack&action=edit§ion=2 "Edit section: Specifications")\]
| Model | Unit Cost | Capacity | Power | Round Trip Efficiency | Dimensions (W x H x D)[\[15\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-Emergency_Response_Guide-15) | Cycle Life | Weight[\[15\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-Emergency_Response_Guide-15) |
|---|---|---|---|---|---|---|---|
| Megapack | \$1.24M | 2\.6 MWh[\[16\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-16) | 1 MW[\[17\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-Tesla_10-K-17) | | 23\.52 ft × 8.27 ft × 5.44 ft (7.168 m × 2.522 m × 1.659 m) | | 56,000 lb (25,400 kg) |
| Megapack 2 | \$1.47M | 3\.854 MWh | 1\.284 MW | 92\.0% | 23\.79 ft × 8.22 ft × 5.37 ft (7.25 m × 2.506 m × 1.637 m) | | 67,200 lb (30,500 kg) |
| Megapack 2 XL | \$1.39M | 3\.916 MWh | 1\.927 MW | 85-90% | 28\.87 ft × 9.14 ft × 5.41 ft (8.8 m × 2.785 m × 1.65 m) | 3,000-5000 cycles Tesla .com | 84,000 lb (38,100 kg) |
| Megablock 3/ Megapack 3 | estimated on Megapack pricing around \$1.39M. 40% lower installation costs with 78% fewer connections. | 5 MWh | tbc | 91% | tbc | \>10,000 cycles | 86,000 lb (39,000 kg) |
## Terms
\[[edit](https://en.wikipedia.org/w/index.php?title=Tesla_Megapack&action=edit§ion=3 "Edit section: Terms")\]
Each Megapack comes with a 15-year "no defect" and "energy retention" warranty.[\[17\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-Tesla_10-K-17) A 10 or 20 year "performance guarantee" is available for an additional cost.[\[17\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-Tesla_10-K-17) Once a Megapack has reached the end of its useful life, Tesla says they can be [returned for recycling](https://en.wikipedia.org/wiki/Battery_recycling "Battery recycling").[\[18\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-County_of_Monterey-18)
Megapacks are pre-assembled, including "battery modules, bi-directional inverters, a thermal management system, an AC main breaker and controls."[\[19\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-19)
Tesla requires customers to purchase a maintenance service agreement. Each Megapack receives a minor annual service, and a major service every ten years. The annual maintenance includes inspections and cleaning. The ten-year maintenance includes activities such as replacing the pump and fan for the thermal management system and refilling the coolant fluid.[\[20\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-20) Maintenance is expected to take about an hour per Megapack.[\[18\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-County_of_Monterey-18)
## Design
\[[edit](https://en.wikipedia.org/w/index.php?title=Tesla_Megapack&action=edit§ion=4 "Edit section: Design")\]
The Megapack thermal management system is located at the top of each unit.[\[18\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-County_of_Monterey-18) It uses coolant fluid, made of an equal-parts mixture of [ethylene glycol](https://en.wikipedia.org/wiki/Ethylene_glycol "Ethylene glycol") and water, to keep the battery at operating temperature.[\[18\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-County_of_Monterey-18)
Each Megapack 2XL weighs approximately 84,000 pounds (38,000 kg) and the enclosure is built to a similar size as an [intermodal container](https://en.wikipedia.org/wiki/Intermodal_container "Intermodal container") and includes [twistlock](https://en.wikipedia.org/wiki/Twistlock "Twistlock") fittings to allow automated handling.
## Applications
\[[edit](https://en.wikipedia.org/w/index.php?title=Tesla_Megapack&action=edit§ion=5 "Edit section: Applications")\]
[](https://en.wikipedia.org/wiki/File:Tesla_Megapack_site_with_solar_canopies.webp)
Tesla Megapack site with [solar canopies](https://en.wikipedia.org/wiki/Solar_canopies "Solar canopies")[\[21\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-21) 3D sketch
Grid batteries are used for [ancillary services](https://en.wikipedia.org/wiki/Ancillary_services_\(electric_power\) "Ancillary services (electric power)") such as control of frequency and phase, [black start](https://en.wikipedia.org/wiki/Black_start "Black start"), [operating reserve](https://en.wikipedia.org/wiki/Operating_reserve "Operating reserve") etc.
### Peak power
\[[edit](https://en.wikipedia.org/w/index.php?title=Tesla_Megapack&action=edit§ion=6 "Edit section: Peak power")\]
Megapacks are designed for large-scale energy storage. Megapacks are used by utilities to replace or augment [peaker power plants](https://en.wikipedia.org/wiki/Peaking_power_plant "Peaking power plant"),[\[22\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-22) which generate energy during periods of peak demand. Megapacks store grid energy rather than generating it from fuel.[\[23\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-23)
### Time shifting
\[[edit](https://en.wikipedia.org/w/index.php?title=Tesla_Megapack&action=edit§ion=7 "Edit section: Time shifting")\]
In some areas, energy storage has become a requirement to help convert [intermittent energy sources such as wind and solar](https://en.wikipedia.org/wiki/Variable_renewable_energy "Variable renewable energy") into firm power.[\[24\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-24)
Other energy storage solutions, such as [pumped hydroelectric storage](https://en.wikipedia.org/wiki/Pumped-storage_hydroelectricity "Pumped-storage hydroelectricity"), dominate the time-shift market. As of 2019, pumped hydroelectric storage accounted for 96% of global energy storage capacity.[\[25\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-U.S._Grid_Energy_Storage_Factsheet-25) Pumped hydroelectric storage systems have lower efficiency, but longer lifetimes than battery storage.[\[25\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-U.S._Grid_Energy_Storage_Factsheet-25)
Batteries may be deployed more quickly than other storage technologies.[\[26\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-26)
### Supercharger stations
\[[edit](https://en.wikipedia.org/w/index.php?title=Tesla_Megapack&action=edit§ion=8 "Edit section: Supercharger stations")\]
[](https://en.wikipedia.org/wiki/File:Tesla_Supercharger_station_with_solar_canopy.webp)
3D sketch of [Tesla Supercharger](https://en.wikipedia.org/wiki/Tesla_Supercharger "Tesla Supercharger") station with [solar canopies](https://en.wikipedia.org/wiki/Solar_canopy "Solar canopy") and 8 Megapack set for close to 32 [MWh](https://en.wikipedia.org/wiki/MWh "MWh")
Megapacks have been installed at [Tesla Supercharger](https://en.wikipedia.org/wiki/Tesla_Supercharger "Tesla Supercharger") stations that also have [solar canopies](https://en.wikipedia.org/wiki/Solar_canopies "Solar canopies") to help power the Megapacks.[\[27\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-27) Megapacks can smooth out [electric demand](https://en.wikipedia.org/wiki/Energy_demand_management "Energy demand management") on the local power grid and use the stored Megapacks electricity during [peak demand](https://en.wikipedia.org/wiki/Peak_demand "Peak demand") so there are not excessive surcharges on electricity to charge the electric vehicles.[\[28\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-28) To support summer travel Tesla claimed in July 2025 to have connected for the first time a mobile Megapack to a European Supercharger, the [Otočac](https://en.wikipedia.org/wiki/Oto%C4%8Dac "Otočac") station in [Croatia](https://en.wikipedia.org/wiki/Croatia "Croatia").[\[29\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-29)
## Deployments
\[[edit](https://en.wikipedia.org/w/index.php?title=Tesla_Megapack&action=edit§ion=9 "Edit section: Deployments")\]
### Completed
\[[edit](https://en.wikipedia.org/w/index.php?title=Tesla_Megapack&action=edit§ion=10 "Edit section: Completed")\]
In November 2019, Tesla used a Megapack to power a mobile recharging station for Tesla electric vehicles in California.[\[30\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-Lambert_2019-30) The mobile Supercharger delivered 125 kW, and was transported on a flat trailer attached to a truck between deployment locations.[\[30\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-Lambert_2019-30)
In December 2019, Tesla delivered a 1.25 MW/2.5 MWh Megapack to the [Millidgeville](https://en.wikipedia.org/wiki/Millidgeville,_New_Brunswick "Millidgeville, New Brunswick") Substation in [Saint John](https://en.wikipedia.org/wiki/Saint_John,_New_Brunswick "Saint John, New Brunswick"), Canada for [peak shaving](https://en.wikipedia.org/wiki/Peak_shaving "Peak shaving").[\[31\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-31)[\[32\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-McCreadie_2019-32) The battery is estimated to save owner Saint John Energy CA\$200,000 per year.[\[33\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-33) It became operational on April 3, 2020.[\[34\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-34)
The 300 MW/450 MWh [Victorian Big Battery](https://en.wikipedia.org/wiki/Victorian_Big_Battery "Victorian Big Battery") near [Geelong](https://en.wikipedia.org/wiki/Geelong "Geelong"), Australia,[\[35\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-35) constituted the largest battery in the southern hemisphere at the time.[\[36\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-36) The [commissioning](https://en.wikipedia.org/wiki/Project_commissioning "Project commissioning") process was halted due to a fire (see "Safety" section), and the lessons learned were applied to other batteries.[\[37\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-vicRenew-37) The battery was commissioned on time in December 2021, a year after contract,[\[38\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-38) with an estimated [return on investment](https://en.wikipedia.org/wiki/Return_on_investment "Return on investment") of 2.4.[\[39\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-39)
In December 2021, Strata Solar, an American commercial solar services provider, deployed a 100 MW/400 MWh energy storage facility in [Ventura County](https://en.wikipedia.org/wiki/Ventura_County,_California "Ventura County, California"), California, using 142 Megapacks.[\[40\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-40) The deployment replaced a natural-gas peaker plant.
As of June 2022, [Pacific Gas and Electric Company](https://en.wikipedia.org/wiki/Pacific_Gas_and_Electric_Company "Pacific Gas and Electric Company") (PG\&E) operates a [182\.5 MW/730 MWh 256-Megapack system at Moss Landing](https://en.wikipedia.org/wiki/Moss_Landing_Power_Plant#Elkhorn_115_kV "Moss Landing Power Plant"), in [Monterey County](https://en.wikipedia.org/wiki/Monterey_County,_California "Monterey County, California"), California.[\[41\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-41)[\[42\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-42)[\[3\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-blog-3)[\[43\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-43)
[TransAlta](https://en.wikipedia.org/wiki/TransAlta "TransAlta") owns and operates a 10 MW/20 MWh Megapack system near [Pincher Creek](https://en.wikipedia.org/wiki/Pincher_Creek "Pincher Creek"), Alberta, Canada, which was completed in October 2020.[\[44\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-44) As of July 2024, it is one of ten active storage sites in Alberta,[\[45\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-45) and all are Megapacks.
## Safety
\[[edit](https://en.wikipedia.org/w/index.php?title=Tesla_Megapack&action=edit§ion=11 "Edit section: Safety")\]
Grid-scale battery standards and fire containment practices are at an early stage of development.[\[46\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-:1-46)
Fire risks are one factor that has delayed the deployment of some utility energy storage systems. Most battery fires cannot be extinguished with water, which is the primary firefighting technique in most communities. A fire in a single cell can cascade to others via [thermal runaway](https://en.wikipedia.org/wiki/Thermal_runaway "Thermal runaway"), possibly in milliseconds, potentially creating a major hazard.[\[46\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-:1-46)
Preventing fires involves multiple layers of protection. First, is to prevent fire in a single cell, by eliminating sparks and short circuits. However, grid-scale systems face potential problems such as coolant leaks and faulty installation. Venting flammable gases and improved insulation reduce cascade risks. Placing controls outside of the container gives more management options. Instead of suppressants, monitoring the situation while watering surrounding areas can help contain the fire. Sensors that track local weather conditions can help avoid overheating. Lithium-free designs with lower fire risks are possible.[\[46\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-:1-46)
"Plume modeling" attempts to predict how gases from burning battery chemicals might travel. The gases produced vary across battery types, [hydrogen fluoride](https://en.wikipedia.org/wiki/Hydrogen_fluoride "Hydrogen fluoride") (HF) is of particular concern even at low concentrations. A later plume analysis by Vistra reported that concentrations of HF above California exposure limits could spread across an area 1300 feet in diameter under wind conditions that occur 7 percent of the year.[\[46\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-:1-46)
In [Raquette Lake](https://en.wikipedia.org/wiki/Raquette_Lake "Raquette Lake"), New York, the town passed a one-year moratorium preventing battery installation in response to protests citing fires at three New York battery installations. Protestors cited a fire in [Lyme, New York](https://en.wikipedia.org/wiki/Lyme,_New_York "Lyme, New York") that burned for four days.[\[46\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-:1-46)
A Megapack ignited at Pacific Gas and Electric's (PG\&E's) Moss Landing, California facility in September 2022. The fire led to a day-long shelter-in-place advisory. PG\&E stated that safety measures included thermal alarms that can shut down the system, an incident command center, an audible evacuation alarm, pre-fire planning with local fire crews and emergency shut down protocols. Heat-suppression systems, intended to curb thermal runaway, were accidentally triggered, dousing batteries in water that caused arcing and short circuiting. The plant was shut down for months.[\[47\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-47) Vistra's third installation in Moss Landing adopted the outdoor container model instead of putting the racks under a single roof. (Vistra stated that the outdoor design was chosen to expedite construction.)[\[46\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-:1-46)[\[48\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-48)
In July 2021, one of the 212 Megapack modules at the [Victorian Big Battery](https://en.wikipedia.org/wiki/Victorian_Big_Battery "Victorian Big Battery") project caught fire[\[49\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-49) due to a coolant leak while the battery was unmonitored. That ignited the adjacent Megapack.[\[37\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-vicRenew-37) Three days later, the fire had burnt itself out as preferred by the fire department.[\[50\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-renewVBB-50)[\[51\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-mooraboolfire-51)[\[46\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-:1-46)
A 50 MW / 100 MWh battery project using Tesla Megapack 2 was under construction in [Bouldercombe](https://en.wikipedia.org/wiki/Bouldercombe "Bouldercombe") near Rockhampton, Queensland.[\[52\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-52) The [alternating current](https://en.wikipedia.org/wiki/Alternating_current "Alternating current") section caught fire in September 2023 and spread to the cells of one Megapack module, also damaging the adjacent module. Both modules are being replaced by Tesla. Other 36 modules were operational a couple of days later.[\[53\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-53)
## See also
\[[edit](https://en.wikipedia.org/w/index.php?title=Tesla_Megapack&action=edit§ion=12 "Edit section: See also")\]
- [Tesla Supercharger Station](https://en.wikipedia.org/wiki/Tesla_Supercharger "Tesla Supercharger")
## References
\[[edit](https://en.wikipedia.org/w/index.php?title=Tesla_Megapack&action=edit§ion=13 "Edit section: References")\]
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\[*[self-published source](https://en.wikipedia.org/wiki/Wikipedia:Verifiability#Self-published_sources "Wikipedia:Verifiability")*\]
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["Saint John Energy adding money-saving battery power to its energy grid"](https://globalnews.ca/news/6379160/saint-john-energy-adding-money-saving-battery-power-to-its-energy-grid/). *Global News*. [Archived](https://web.archive.org/web/20220817203746/https://globalnews.ca/news/6379160/saint-john-energy-adding-money-saving-battery-power-to-its-energy-grid/) from the original on August 17, 2022. Retrieved April 5, 2020.
32. **[^](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_ref-McCreadie_2019_32-0)**
McCreadie, Danielle. ["Saint John Energy Joins Partnership With Tesla"](https://www.country94.ca/2019/08/26/saint-john-energy-joins-partnership-with-tesla/). *Country 94*. [Archived](https://web.archive.org/web/20241204200804/https://www.country94.ca/2019/08/26/saint-john-energy-joins-partnership-with-tesla/) from the original on December 4, 2024. Retrieved April 5, 2020.
33. **[^](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_ref-33)**
Lambert, Fred (March 9, 2020). ["Tesla deploys new Megapack in Canada, could save small utility \$200,000 per year"](https://electrek.co/2020/03/09/tesla-megapack-canada-savings/). *Electrek*. [Archived](https://web.archive.org/web/20200406134200/https://electrek.co/2020/03/09/tesla-megapack-canada-savings/) from the original on April 6, 2020. Retrieved April 5, 2020.
34. **[^](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_ref-34)**
["Saint John Energy"](https://www.facebook.com/saintjohnenergy/posts/2882863735090856). *www.facebook.com*. Retrieved August 18, 2020.
35. **[^](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_ref-35)**
["The Victorian Big Battery Q\&A"](https://www.energy.vic.gov.au/renewable-energy/the-victorian-big-battery/the-victorian-big-battery-q-and-a). *The Victorian Big Battery Q\&A*. Victorian Government. November 5, 2020. [Archived](https://web.archive.org/web/20211116134451/https://www.energy.vic.gov.au/renewable-energy/the-victorian-big-battery/the-victorian-big-battery-q-and-a) from the original on November 16, 2021. Retrieved October 11, 2021.
36. **[^](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_ref-36)**
["Victoria to house largest battery in southern hemisphere"](https://www.abc.net.au/news/2020-11-05/new-tesla-battery-for-moorabool-victoria/12851698). *ABC News*. November 5, 2020. [Archived](https://web.archive.org/web/20211014120519/https://www.abc.net.au/news/2020-11-05/new-tesla-battery-for-moorabool-victoria/12851698) from the original on October 14, 2021.
37. ^ [***a***](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_ref-vicRenew_37-0) [***b***](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_ref-vicRenew_37-1)
Parkinson, Giles (September 27, 2021). ["Australia's biggest battery given all clear after Tesla Megapack fire investigation"](https://reneweconomy.com.au/australias-biggest-battery-given-all-clear-after-tesla-megapack-fire-investigation/). *RenewEconomy*. [Archived](https://web.archive.org/web/20211006023531/https://reneweconomy.com.au/australias-biggest-battery-given-all-clear-after-tesla-megapack-fire-investigation/) from the original on October 6, 2021.
38. **[^](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_ref-38)**
Parkinson, Giles (December 7, 2021). ["Australia's biggest battery officially opened, 12 months after contract awarded"](https://reneweconomy.com.au/australias-biggest-battery-officially-opened-12-months-after-contract-awarded/). *RenewEconomy*. [Archived](https://web.archive.org/web/20211208030113/https://reneweconomy.com.au/australias-biggest-battery-officially-opened-12-months-after-contract-awarded/) from the original on December 8, 2021.
39. **[^](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_ref-39)**
Colthorpe, Andy (December 8, 2021). ["Victorian Big Battery: Australia's biggest battery storage system at 450MWh, is online"](https://www.energy-storage.news/victorian-big-battery-australias-biggest-battery-storage-system-at-450mwh-is-online/). *Energy Storage News*. [Archived](https://web.archive.org/web/20211208033801/https://www.energy-storage.news/victorian-big-battery-australias-biggest-battery-storage-system-at-450mwh-is-online/) from the original on December 8, 2021.
40. **[^](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_ref-40)**
Fox, Eva (December 18, 2021). ["142 Tesla Megapacks Replace Fossil Fuel-Powered Peaker Plant in California, Shows Company Video"](https://www.tesmanian.com/blogs/tesmanian-blog/142-tesla-megapacks-replace-fossil-fuel-powered-peaker-plant-in-california-shows-companys-video). *TESMANIAN*. Retrieved September 9, 2023.
41. **[^](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_ref-41)**
Lambert, Fred (June 29, 2018). ["Tesla and PG\&E are working on a massive 'up to 1.1 GWh' Powerpack battery system"](https://electrek.co/2018/06/29/tesla-pge-giant-1-gwh-powerpack-battery-system/). *[Electrek](https://en.wikipedia.org/wiki/Electrek "Electrek")*. [Archived](https://web.archive.org/web/20200519191043/https://electrek.co/2018/06/29/tesla-pge-giant-1-gwh-powerpack-battery-system/) from the original on May 19, 2020. Retrieved May 27, 2020.
42. **[^](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_ref-42)**
Lambert, Fred (February 27, 2020). ["Tesla's massive 1GWh Megapack battery project with PG\&E is approved"](https://electrek.co/2020/02/27/tesla-1gwh-megapack-battery-project-pge-approved/). *Electrek*. [Archived](https://web.archive.org/web/20221007015002/https://electrek.co/2020/02/27/tesla-1gwh-megapack-battery-project-pge-approved/) from the original on October 7, 2022. Retrieved April 15, 2020.
43. **[^](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_ref-43)**
["California ISO – A golden age of energy storage"](http://www.caiso.com/about/Pages/Blog/Posts/A-golden-age-of-energy-storage.aspx). *www.caiso.com*. June 14, 2022. [Archived](https://web.archive.org/web/20221022155203/http://www.caiso.com/about/Pages/Blog/Posts/A-golden-age-of-energy-storage.aspx) from the original on October 22, 2022. Retrieved October 22, 2022.
44. **[^](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_ref-44)**
["Windcharger Battery Storage"](https://transalta.com/about-us/our-operations/facilities/windcharger-battery-storage/). *[TransAlta](https://en.wikipedia.org/wiki/TransAlta "TransAlta")*. Retrieved July 19, 2024.
45. **[^](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_ref-45)** [List of generating stations in Alberta](https://en.wikipedia.org/wiki/List_of_generating_stations_in_Alberta "List of generating stations in Alberta")
46. ^ [***a***](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_ref-:1_46-0) [***b***](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_ref-:1_46-1) [***c***](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_ref-:1_46-2) [***d***](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_ref-:1_46-3) [***e***](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_ref-:1_46-4) [***f***](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_ref-:1_46-5) [***g***](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_ref-:1_46-6)
Barber, Gregory. ["Big Batteries Are Booming. So Are Fears They'll Catch Fire"](https://www.wired.com/story/big-grid-batteries-are-booming-so-are-fears-fire/). *Wired*. [ISSN](https://en.wikipedia.org/wiki/ISSN_\(identifier\) "ISSN (identifier)") [1059-1028](https://search.worldcat.org/issn/1059-1028). [Archived](https://web.archive.org/web/20230909200814/https://www.wired.com/story/big-grid-batteries-are-booming-so-are-fears-fire/) from the original on September 9, 2023. Retrieved September 10, 2023.
47. **[^](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_ref-47)**
Balderas, Christian (September 22, 2022). ["Residents left worried after PG\&E's Tesla-powered battery plant catches fire"](https://www.ksbw.com/article/moss-landing-residents-worried-for-their-safety-after-pgandes-tesla-battery-fire/41323388). *KSBW*. Retrieved September 10, 2023.
48. **[^](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_ref-48)**
Murray, Cameron (September 21, 2022). ["Fire at PG\&E's Tesla battery storage facility in Moss Landing under control, authorities lift closures"](https://www.energy-storage.news/fire-at-pges-tesla-battery-storage-facility-in-moss-landing-under-control-authorities-lift-closures/). *Energy Storage News*. [Archived](https://web.archive.org/web/20221205172145/https://www.energy-storage.news/fire-at-pges-tesla-battery-storage-facility-in-moss-landing-under-control-authorities-lift-closures/) from the original on December 5, 2022. Retrieved September 22, 2022.
49. **[^](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_ref-49)**
["Fire breaks out at giant battery project near Geelong"](https://www.abc.net.au/news/2021-07-30/tesla-battery-fire-moorabool-geelong/100337488). *ABC News*. July 30, 2021. [Archived](https://web.archive.org/web/20211014120514/https://www.abc.net.au/news/2021-07-30/tesla-battery-fire-moorabool-geelong/100337488) from the original on October 14, 2021.
50. **[^](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_ref-renewVBB_50-0)**
Parkinson, Giles (August 1, 2021). ["Tesla Megapack still burning, no word if any delays to Victoria Big Battery"](https://reneweconomy.com.au/tesla-megapack-still-burning-no-word-if-any-delays-to-victoria-big-battery/). *RenewEconomy*. [Archived](https://web.archive.org/web/20210801212811/https://reneweconomy.com.au/tesla-megapack-still-burning-no-word-if-any-delays-to-victoria-big-battery/) from the original on August 1, 2021. "no point trying to put the fire out, merely contain it and stop it from spreading to other containers"
51. **[^](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_ref-mooraboolfire_51-0)**
Morgan, Lucy Battersby, Cassandra (August 2, 2021). ["Blaze at Tesla Big Battery extinguished after three days"](https://www.theage.com.au/national/victoria/blaze-at-tesla-big-battery-extinguished-after-three-day-battle-for-control-20210802-p58f6x.html). *The Age*. [Archived](https://web.archive.org/web/20211123183415/https://www.theage.com.au/national/victoria/blaze-at-tesla-big-battery-extinguished-after-three-day-battle-for-control-20210802-p58f6x.html) from the original on November 23, 2021.
`{{cite web}}`: CS1 maint: multiple names: authors list ([link](https://en.wikipedia.org/wiki/Category:CS1_maint:_multiple_names:_authors_list "Category:CS1 maint: multiple names: authors list"))
52. **[^](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_ref-52)**
["50MW/100MWh Bouldercombe Battery Project"](https://genexpower.com.au/bouldercombe-battery-project/). *Genex Power*. Retrieved July 10, 2023.
53. **[^](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_ref-53)**
Peacock, Bella (November 7, 2023). ["Queensland Bouldercombe battery fire ignited on grid side, not within Megapack, analysis finds"](https://www.pv-magazine-australia.com/2023/11/07/queensland-bouldercombe-battery-fire-ignited-on-grid-side-not-within-megapack-analysis-finds/). *pv magazine Australia*. [Archived](https://web.archive.org/web/20231218000008/https://www.pv-magazine-australia.com/2023/11/07/queensland-bouldercombe-battery-fire-ignited-on-grid-side-not-within-megapack-analysis-finds/) from the original on December 18, 2023. Retrieved December 17, 2023.
## External links
\[[edit](https://en.wikipedia.org/w/index.php?title=Tesla_Megapack&action=edit§ion=14 "Edit section: External links")\]
- [Official website](https://www.tesla.com/megapack)
| [v](https://en.wikipedia.org/wiki/Template:Tesla,_Inc. "Template:Tesla, Inc.") [t](https://en.wikipedia.org/wiki/Template_talk:Tesla,_Inc. "Template talk:Tesla, Inc.") [e](https://en.wikipedia.org/wiki/Special:EditPage/Template:Tesla,_Inc. "Special:EditPage/Template:Tesla, Inc.")[Tesla, Inc.](https://en.wikipedia.org/wiki/Tesla,_Inc. "Tesla, Inc.") | |
|---|---|
| [Electric vehicles](https://en.wikipedia.org/wiki/Electric_vehicle "Electric vehicle") | |
| | |
| Current | [Cybertruck](https://en.wikipedia.org/wiki/Tesla_Cybertruck "Tesla Cybertruck") [Model 3](https://en.wikipedia.org/wiki/Tesla_Model_3 "Tesla Model 3") [Model S](https://en.wikipedia.org/wiki/Tesla_Model_S "Tesla Model S") [Model X](https://en.wikipedia.org/wiki/Tesla_Model_X "Tesla Model X") [Model Y](https://en.wikipedia.org/wiki/Tesla_Model_Y "Tesla Model Y") [Semi](https://en.wikipedia.org/wiki/Tesla_Semi "Tesla Semi") |
| Future | [Cybercab](https://en.wikipedia.org/wiki/Tesla_Cybercab "Tesla Cybercab") [Cyberquad](https://en.wikipedia.org/wiki/Tesla_Cyberquad "Tesla Cyberquad") [Roadster (2nd gen)](https://en.wikipedia.org/wiki/Tesla_Roadster_\(second_generation\) "Tesla Roadster (second generation)") [Robovan](https://en.wikipedia.org/wiki/Tesla_Robovan "Tesla Robovan") [Tesla next-generation vehicle platform](https://en.wikipedia.org/wiki/Tesla_next-generation_vehicle_platform "Tesla next-generation vehicle platform") |
| Discontinued | [Roadster (1st gen)](https://en.wikipedia.org/wiki/Tesla_Roadster_\(first_generation\) "Tesla Roadster (first generation)") |
| Joint projects | [Cyberquad for Kids](https://en.wikipedia.org/wiki/Tesla_Cyberquad "Tesla Cyberquad") Mercedes [A-Class](https://en.wikipedia.org/wiki/Mercedes_A-Class_E-Cell "Mercedes A-Class E-Cell") [B-Class](https://en.wikipedia.org/wiki/Mercedes-Benz_B-Class_Electric_Drive "Mercedes-Benz B-Class Electric Drive") [Smart Fortwo ED](https://en.wikipedia.org/wiki/Smart_electric_drive#Second_generation "Smart electric drive") [Toyota RAV4 EV (2nd gen.)](https://en.wikipedia.org/wiki/Toyota_RAV4_EV#Second_generation "Toyota RAV4 EV") |
| [Tesla Energy](https://en.wikipedia.org/wiki/Tesla_Energy "Tesla Energy") | |
| | |
| Charging | [Megacharger](https://en.wikipedia.org/wiki/Tesla_Megacharger "Tesla Megacharger") [North American Charging Standard](https://en.wikipedia.org/wiki/North_American_Charging_Standard "North American Charging Standard") (NACS) [Supercharger](https://en.wikipedia.org/wiki/Tesla_Supercharger "Tesla Supercharger") |
| Storage | [Megapack]() [Powerwall](https://en.wikipedia.org/wiki/Tesla_Powerwall "Tesla Powerwall") [Powerpack](https://en.wikipedia.org/wiki/Tesla_Powerpack "Tesla Powerpack") (discontinued) |
| Solar | [Solar panels](https://en.wikipedia.org/wiki/Tesla_solar_panels "Tesla solar panels") [Solar Roof](https://en.wikipedia.org/wiki/Tesla_Solar_Roof "Tesla Solar Roof") |
| [Artificial intelligence](https://en.wikipedia.org/wiki/Artificial_intelligence "Artificial intelligence") | |
| | |
| [Robotics](https://en.wikipedia.org/wiki/Robotics "Robotics") | [Optimus (robot)](https://en.wikipedia.org/wiki/Optimus_\(robot\) "Optimus (robot)") |
| [Supercomputers](https://en.wikipedia.org/wiki/Supercomputer "Supercomputer") | [Tesla Dojo](https://en.wikipedia.org/wiki/Tesla_Dojo "Tesla Dojo") |
| [ADAS](https://en.wikipedia.org/wiki/Advanced_driver-assistance_system "Advanced driver-assistance system") | [Tesla Autopilot](https://en.wikipedia.org/wiki/Tesla_Autopilot "Tesla Autopilot") ([Tesla Autopilot hardware](https://en.wikipedia.org/wiki/Tesla_Autopilot_hardware "Tesla Autopilot hardware")) |
| [Factories](https://en.wikipedia.org/wiki/List_of_Tesla_factories "List of Tesla factories") | [Berlin](https://en.wikipedia.org/wiki/Gigafactory_Berlin-Brandenburg "Gigafactory Berlin-Brandenburg") [Fremont](https://en.wikipedia.org/wiki/Tesla_Fremont_Factory "Tesla Fremont Factory") *[Mexico](https://en.wikipedia.org/wiki/Gigafactory_Mexico "Gigafactory Mexico") (future)* [Nevada](https://en.wikipedia.org/wiki/Gigafactory_Nevada "Gigafactory Nevada") [New York](https://en.wikipedia.org/wiki/Gigafactory_New_York "Gigafactory New York") [Shanghai](https://en.wikipedia.org/wiki/Gigafactory_Shanghai "Gigafactory Shanghai") [Texas](https://en.wikipedia.org/wiki/Gigafactory_Texas "Gigafactory Texas") [Tilburg](https://en.wikipedia.org/wiki/Tesla_facilities_in_Tilburg "Tesla facilities in Tilburg") |
| People | |
| | |
| Executives | [Elon Musk](https://en.wikipedia.org/wiki/Elon_Musk "Elon Musk") (CEO) [Robyn Denholm](https://en.wikipedia.org/wiki/Robyn_Denholm "Robyn Denholm") (Chair) [Vaibhav Taneja](https://en.wikipedia.org/wiki/Vaibhav_Taneja "Vaibhav Taneja") (CFO) [Tom Zhu](https://en.wikipedia.org/wiki/Tom_Zhu "Tom Zhu") (SVP of automotive) |
| Others | [Franz von Holzhausen](https://en.wikipedia.org/wiki/Franz_von_Holzhausen "Franz von Holzhausen") (Chief Designer) [Joe Gebbia](https://en.wikipedia.org/wiki/Joe_Gebbia "Joe Gebbia") (board) [James Murdoch](https://en.wikipedia.org/wiki/James_Murdoch "James Murdoch") (board) [Kimbal Musk](https://en.wikipedia.org/wiki/Kimbal_Musk "Kimbal Musk") (board) [J. B. Straubel](https://en.wikipedia.org/wiki/J._B._Straubel "J. B. Straubel") (board, co-founder) [Kathleen Wilson-Thompson](https://en.wikipedia.org/wiki/Kathleen_Wilson-Thompson "Kathleen Wilson-Thompson") (board) |
| Former | [Deepak Ahuja](https://en.wikipedia.org/wiki/Deepak_Ahuja "Deepak Ahuja") (two-time CFO) [Drew Baglino](https://en.wikipedia.org/wiki/Drew_Baglino "Drew Baglino") (SVP of engineering) [Ze'ev Drori](https://en.wikipedia.org/wiki/Ze%27ev_Drori "Ze'ev Drori") (CEO) [Martin Eberhard](https://en.wikipedia.org/wiki/Martin_Eberhard "Martin Eberhard") (co-founder, CEO) [Larry Ellison](https://en.wikipedia.org/wiki/Larry_Ellison "Larry Ellison") (board) [Steve Jurvetson](https://en.wikipedia.org/wiki/Steve_Jurvetson "Steve Jurvetson") (board) [Andrej Karpathy](https://en.wikipedia.org/wiki/Andrej_Karpathy "Andrej Karpathy") (AI) [Zach Kirkhorn](https://en.wikipedia.org/wiki/Zach_Kirkhorn "Zach Kirkhorn") (CFO) [Arnnon Geshuri](https://en.wikipedia.org/wiki/Arnnon_Geshuri "Arnnon Geshuri") (HR) [Jérôme Guillen](https://en.wikipedia.org/wiki/Jerome_Guillen "Jerome Guillen") (automotive) [Jim Keller](https://en.wikipedia.org/wiki/Jim_Keller_\(engineer\) "Jim Keller (engineer)") (Autopilot) [Chris Lattner](https://en.wikipedia.org/wiki/Chris_Lattner "Chris Lattner") (Autopilot) [Hiromichi Mizuno](https://en.wikipedia.org/wiki/Hiromichi_Mizuno "Hiromichi Mizuno") (board) [Marc Tarpenning](https://en.wikipedia.org/wiki/Marc_Tarpenning "Marc Tarpenning") (co-founder, CFO) [Jay Vijayan](https://en.wikipedia.org/wiki/Jay_Vijayan "Jay Vijayan") (CIO) |
| Controversies | [Criticism of Tesla](https://en.wikipedia.org/wiki/Criticism_of_Tesla,_Inc. "Criticism of Tesla, Inc.") [Dealership disputes](https://en.wikipedia.org/wiki/Tesla_US_dealership_disputes "Tesla US dealership disputes") [Everyone Hates Elon](https://en.wikipedia.org/wiki/Everyone_Hates_Elon "Everyone Hates Elon") [Lawsuits (list)](https://en.wikipedia.org/wiki/List_of_lawsuits_involving_Tesla,_Inc. "List of lawsuits involving Tesla, Inc.") *[Diaz v. Tesla](https://en.wikipedia.org/wiki/Diaz_v._Tesla,_Inc. "Diaz v. Tesla, Inc.")* [List of Tesla Autopilot crashes](https://en.wikipedia.org/wiki/List_of_Tesla_Autopilot_crashes "List of Tesla Autopilot crashes") [Tesla Takedown](https://en.wikipedia.org/wiki/Tesla_Takedown "Tesla Takedown") [TSLAQ](https://en.wikipedia.org/wiki/TSLAQ "TSLAQ") [Vandalism](https://en.wikipedia.org/wiki/2025_Tesla_vandalism "2025 Tesla vandalism") |
| Related | [History](https://en.wikipedia.org/wiki/History_of_Tesla,_Inc. "History of Tesla, Inc.") [DeepScale](https://en.wikipedia.org/wiki/DeepScale "DeepScale") [Easter eggs in products](https://en.wikipedia.org/wiki/List_of_Easter_eggs_in_Tesla_products "List of Easter eggs in Tesla products") [Giga Press](https://en.wikipedia.org/wiki/Giga_Press "Giga Press") [Hibar Systems](https://en.wikipedia.org/wiki/Hibar_Systems "Hibar Systems") [Hornsdale Power Reserve](https://en.wikipedia.org/wiki/Hornsdale_Power_Reserve "Hornsdale Power Reserve") [Maxwell Technologies](https://en.wikipedia.org/wiki/Maxwell_Technologies "Maxwell Technologies") (divested) [SolarCity](https://en.wikipedia.org/wiki/SolarCity "SolarCity") (merged into Tesla Energy) [Tesla Automation](https://en.wikipedia.org/wiki/Tesla_Automation "Tesla Automation") [Tesla battery station](https://en.wikipedia.org/wiki/Tesla_battery_station "Tesla battery station") [Tesla Roadster in space](https://en.wikipedia.org/wiki/Elon_Musk%27s_Tesla_Roadster "Elon Musk's Tesla Roadster") [Tesla Robotaxi](https://en.wikipedia.org/wiki/Tesla_Robotaxi "Tesla Robotaxi") [Tesla and unions](https://en.wikipedia.org/wiki/Tesla_and_trade_unions "Tesla and trade unions") [Tesla Diner](https://en.wikipedia.org/wiki/Tesla_Diner "Tesla Diner") [Zep Solar](https://en.wikipedia.org/wiki/Zep_Solar "Zep Solar") (merged into Tesla Energy) [Nikola Tesla](https://en.wikipedia.org/wiki/Nikola_Tesla "Nikola Tesla") (namesake) [Terafab](https://en.wikipedia.org/wiki/Terafab "Terafab") |
|  [Category](https://en.wikipedia.org/wiki/Category:Tesla,_Inc. "Category:Tesla, Inc.") | |

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Tesla Megapack
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| Readable Markdown | From Wikipedia, the free encyclopedia
This article is about Tesla battery energy storage device for electrical utility use. For other uses, see [Megapack (disambiguation)](https://en.wikipedia.org/wiki/Megapack_\(disambiguation\) "Megapack (disambiguation)").
| | |
|---|---|
| [](https://en.wikipedia.org/wiki/File:Tesla_Megapack_set_of_4_with_solar_canopy.webp)Tesla Megapack set of 4 with [solar canopy](https://en.wikipedia.org/wiki/Solar_canopy "Solar canopy") 3D sketch | |
| Type | [Grid energy storage](https://en.wikipedia.org/wiki/Battery_storage_power_station "Battery storage power station") |
| Inception | June 2019; 6 years ago |
| Manufacturer | [Tesla Energy](https://en.wikipedia.org/wiki/Tesla_Energy "Tesla Energy") |
| Website | [tesla.com/megapack](http://tesla.com/megapack) |
The **Tesla Megapack** is a large-scale [rechargeable](https://en.wikipedia.org/wiki/Rechargeable_battery "Rechargeable battery") [lithium-ion battery](https://en.wikipedia.org/wiki/Lithium-ion_battery "Lithium-ion battery") stationary [energy storage](https://en.wikipedia.org/wiki/Energy_storage "Energy storage") product, intended for use at [battery storage power stations](https://en.wikipedia.org/wiki/Battery_storage_power_station "Battery storage power station"), manufactured by [Tesla Energy](https://en.wikipedia.org/wiki/Tesla_Energy "Tesla Energy"), the energy subsidiary of [Tesla, Inc.](https://en.wikipedia.org/wiki/Tesla,_Inc. "Tesla, Inc.")
Launched in 2019, a Megapack can store up to 3.9 megawatt-hours (MWh) of electricity. Each Megapack is a container of similar size to an [intermodal container](https://en.wikipedia.org/wiki/Intermodal_container "Intermodal container"). They are designed to be deployed by electric utilities. The energy stored can be used as required, for example during periods of peak electricity demand or when grid power is disrupted.
Tesla Energy also offers the [Powerwall](https://en.wikipedia.org/wiki/Tesla_Powerwall "Tesla Powerwall"), a smaller energy storage device intended for home use.
[](https://en.wikipedia.org/wiki/File:Tesla_Gigafactory_1_-_December_2019.jpg)
Tesla Giga Nevada, where the Megapack was designed and is manufactured, along with Lathrop
On April 30, 2015, Tesla announced that it would sell standalone battery storage products to consumers and utilities.[\[1\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-Castelvecchi_2015-1) Tesla CEO [Elon Musk](https://en.wikipedia.org/wiki/Elon_Musk "Elon Musk") stated that the company's battery storage products could be used to improve the reliability of intermittent renewable energy sources, such as solar and wind.[\[1\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-Castelvecchi_2015-1)
Prior to the Megapack launch, Tesla used its 200 kilowatt-hour (kWh) [Powerpack](https://en.wikipedia.org/wiki/Powerpack_\(Tesla\) "Powerpack (Tesla)") energy storage product to meet the needs of utilities with large-scale storage requirements such as at the [Hornsdale Power Reserve](https://en.wikipedia.org/wiki/Hornsdale_Power_Reserve "Hornsdale Power Reserve").
Design work began on the Megapack project at [Giga Nevada](https://en.wikipedia.org/wiki/Giga_Nevada "Giga Nevada") at least as early as the first half of 2018.[\[2\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-Lambert_2018-2)
In July 2019, Megapack launched.[\[3\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-blog-3) It was described by Tesla as a utility-scale energy storage product, suitable for power stations and utilities.[\[3\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-blog-3) Tesla claimed that Megapacks would be compatible with Tesla power station monitoring and energy control software, Powerhub and Autobidder.[\[3\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-blog-3) The company stated that Megapack was designed to meet the needs of large-scale battery storage projects, as with the Powerpacks.[\[3\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-blog-3)
Tesla acquired a former [JCPenney](https://en.wikipedia.org/wiki/JCPenney "JCPenney") distribution center in [Lathrop, California](https://en.wikipedia.org/wiki/Lathrop,_California "Lathrop, California"), in 2021 and converted it into a [battery plant called Megafactory](https://en.wikipedia.org/wiki/List_of_Tesla_factories "List of Tesla factories"),[\[4\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-MR_Bulletin-4) with a target capacity of 40 GWh/year when finished.[\[5\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-5) Next-generation Megapacks use prismatic (rectangular) [lithium iron phosphate](https://en.wikipedia.org/wiki/Lithium_iron_phosphate_battery "Lithium iron phosphate battery") (LFP) battery cells,[\[6\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-Lathrop_MF-6) for example in the 585 MWh [Kapolei, Hawaii](https://en.wikipedia.org/wiki/Kapolei,_Hawaii "Kapolei, Hawaii") facility from 2024.[\[7\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-7) Tesla's LFP cell suppliers include China's [CATL](https://en.wikipedia.org/wiki/CATL "CATL") and [LG Energy Solution](https://en.wikipedia.org/wiki/LG_Energy_Solution "LG Energy Solution") which has factories in South Korea and the US.[\[8\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-8)
Tesla's energy deployment added 3.9 GWh in the first quarter of 2023.[\[9\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-:0-9) The combined delivery of storage (Powerwall and Megapack) was 6.5 GWh in 2022, 14.7 GWh in 2023, and 31.4 GWh in 2024.[\[10\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-10)
In 2023, Tesla announced a new "Megafactory" in Shanghai to manufacture Megapacks, with the goal of producing about 10,000 packs per year,[\[11\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-11) and the factory started low rate initial production in late 2024.[\[12\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-12)
Tesla builds a service facility at the 877 MWh [Collie battery](https://en.wikipedia.org/wiki/Collie_Power_Station "Collie Power Station") in [Western Australia](https://en.wikipedia.org/wiki/Western_Australia "Western Australia"), to repair and remanufacture batteries in the state.[\[13\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-13)
On September 8 2025, the company announced a new product for late 2026, called "Megablock", which consists in up to 4 Megapacks version 3 connected with a transformer and a switchgear. Each Megapack 3 is 5 MWh (and 39 tonnes), so each Megablock is 20 MWh. They will be produced in Tesla new facility in [Houston](https://en.wikipedia.org/wiki/Houston "Houston"), [Texas](https://en.wikipedia.org/wiki/Texas "Texas").[\[14\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-14)
| Model | Unit Cost | Capacity | Power | Round Trip Efficiency | Dimensions (W x H x D)[\[15\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-Emergency_Response_Guide-15) | Cycle Life | Weight[\[15\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-Emergency_Response_Guide-15) |
|---|---|---|---|---|---|---|---|
| Megapack | \$1.24M | 2\.6 MWh[\[16\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-16) | 1 MW[\[17\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-Tesla_10-K-17) | | 23\.52 ft × 8.27 ft × 5.44 ft (7.168 m × 2.522 m × 1.659 m) | | 56,000 lb (25,400 kg) |
| Megapack 2 | \$1.47M | 3\.854 MWh | 1\.284 MW | 92\.0% | 23\.79 ft × 8.22 ft × 5.37 ft (7.25 m × 2.506 m × 1.637 m) | | 67,200 lb (30,500 kg) |
| Megapack 2 XL | \$1.39M | 3\.916 MWh | 1\.927 MW | 85-90% | 28\.87 ft × 9.14 ft × 5.41 ft (8.8 m × 2.785 m × 1.65 m) | 3,000-5000 cycles Tesla .com | 84,000 lb (38,100 kg) |
| Megablock 3/ Megapack 3 | estimated on Megapack pricing around \$1.39M. 40% lower installation costs with 78% fewer connections. | 5 MWh | tbc | 91% | tbc | \>10,000 cycles | 86,000 lb (39,000 kg) |
Each Megapack comes with a 15-year "no defect" and "energy retention" warranty.[\[17\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-Tesla_10-K-17) A 10 or 20 year "performance guarantee" is available for an additional cost.[\[17\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-Tesla_10-K-17) Once a Megapack has reached the end of its useful life, Tesla says they can be [returned for recycling](https://en.wikipedia.org/wiki/Battery_recycling "Battery recycling").[\[18\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-County_of_Monterey-18)
Megapacks are pre-assembled, including "battery modules, bi-directional inverters, a thermal management system, an AC main breaker and controls."[\[19\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-19)
Tesla requires customers to purchase a maintenance service agreement. Each Megapack receives a minor annual service, and a major service every ten years. The annual maintenance includes inspections and cleaning. The ten-year maintenance includes activities such as replacing the pump and fan for the thermal management system and refilling the coolant fluid.[\[20\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-20) Maintenance is expected to take about an hour per Megapack.[\[18\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-County_of_Monterey-18)
The Megapack thermal management system is located at the top of each unit.[\[18\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-County_of_Monterey-18) It uses coolant fluid, made of an equal-parts mixture of [ethylene glycol](https://en.wikipedia.org/wiki/Ethylene_glycol "Ethylene glycol") and water, to keep the battery at operating temperature.[\[18\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-County_of_Monterey-18)
Each Megapack 2XL weighs approximately 84,000 pounds (38,000 kg) and the enclosure is built to a similar size as an [intermodal container](https://en.wikipedia.org/wiki/Intermodal_container "Intermodal container") and includes [twistlock](https://en.wikipedia.org/wiki/Twistlock "Twistlock") fittings to allow automated handling.
[](https://en.wikipedia.org/wiki/File:Tesla_Megapack_site_with_solar_canopies.webp)
Tesla Megapack site with [solar canopies](https://en.wikipedia.org/wiki/Solar_canopies "Solar canopies")[\[21\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-21) 3D sketch
Grid batteries are used for [ancillary services](https://en.wikipedia.org/wiki/Ancillary_services_\(electric_power\) "Ancillary services (electric power)") such as control of frequency and phase, [black start](https://en.wikipedia.org/wiki/Black_start "Black start"), [operating reserve](https://en.wikipedia.org/wiki/Operating_reserve "Operating reserve") etc.
Megapacks are designed for large-scale energy storage. Megapacks are used by utilities to replace or augment [peaker power plants](https://en.wikipedia.org/wiki/Peaking_power_plant "Peaking power plant"),[\[22\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-22) which generate energy during periods of peak demand. Megapacks store grid energy rather than generating it from fuel.[\[23\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-23)
In some areas, energy storage has become a requirement to help convert [intermittent energy sources such as wind and solar](https://en.wikipedia.org/wiki/Variable_renewable_energy "Variable renewable energy") into firm power.[\[24\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-24)
Other energy storage solutions, such as [pumped hydroelectric storage](https://en.wikipedia.org/wiki/Pumped-storage_hydroelectricity "Pumped-storage hydroelectricity"), dominate the time-shift market. As of 2019, pumped hydroelectric storage accounted for 96% of global energy storage capacity.[\[25\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-U.S._Grid_Energy_Storage_Factsheet-25) Pumped hydroelectric storage systems have lower efficiency, but longer lifetimes than battery storage.[\[25\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-U.S._Grid_Energy_Storage_Factsheet-25)
Batteries may be deployed more quickly than other storage technologies.[\[26\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-26)
### Supercharger stations
\[[edit](https://en.wikipedia.org/w/index.php?title=Tesla_Megapack&action=edit§ion=8 "Edit section: Supercharger stations")\]
[](https://en.wikipedia.org/wiki/File:Tesla_Supercharger_station_with_solar_canopy.webp)
3D sketch of [Tesla Supercharger](https://en.wikipedia.org/wiki/Tesla_Supercharger "Tesla Supercharger") station with [solar canopies](https://en.wikipedia.org/wiki/Solar_canopy "Solar canopy") and 8 Megapack set for close to 32 [MWh](https://en.wikipedia.org/wiki/MWh "MWh")
Megapacks have been installed at [Tesla Supercharger](https://en.wikipedia.org/wiki/Tesla_Supercharger "Tesla Supercharger") stations that also have [solar canopies](https://en.wikipedia.org/wiki/Solar_canopies "Solar canopies") to help power the Megapacks.[\[27\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-27) Megapacks can smooth out [electric demand](https://en.wikipedia.org/wiki/Energy_demand_management "Energy demand management") on the local power grid and use the stored Megapacks electricity during [peak demand](https://en.wikipedia.org/wiki/Peak_demand "Peak demand") so there are not excessive surcharges on electricity to charge the electric vehicles.[\[28\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-28) To support summer travel Tesla claimed in July 2025 to have connected for the first time a mobile Megapack to a European Supercharger, the [Otočac](https://en.wikipedia.org/wiki/Oto%C4%8Dac "Otočac") station in [Croatia](https://en.wikipedia.org/wiki/Croatia "Croatia").[\[29\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-29)
In November 2019, Tesla used a Megapack to power a mobile recharging station for Tesla electric vehicles in California.[\[30\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-Lambert_2019-30) The mobile Supercharger delivered 125 kW, and was transported on a flat trailer attached to a truck between deployment locations.[\[30\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-Lambert_2019-30)
In December 2019, Tesla delivered a 1.25 MW/2.5 MWh Megapack to the [Millidgeville](https://en.wikipedia.org/wiki/Millidgeville,_New_Brunswick "Millidgeville, New Brunswick") Substation in [Saint John](https://en.wikipedia.org/wiki/Saint_John,_New_Brunswick "Saint John, New Brunswick"), Canada for [peak shaving](https://en.wikipedia.org/wiki/Peak_shaving "Peak shaving").[\[31\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-31)[\[32\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-McCreadie_2019-32) The battery is estimated to save owner Saint John Energy CA\$200,000 per year.[\[33\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-33) It became operational on April 3, 2020.[\[34\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-34)
The 300 MW/450 MWh [Victorian Big Battery](https://en.wikipedia.org/wiki/Victorian_Big_Battery "Victorian Big Battery") near [Geelong](https://en.wikipedia.org/wiki/Geelong "Geelong"), Australia,[\[35\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-35) constituted the largest battery in the southern hemisphere at the time.[\[36\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-36) The [commissioning](https://en.wikipedia.org/wiki/Project_commissioning "Project commissioning") process was halted due to a fire (see "Safety" section), and the lessons learned were applied to other batteries.[\[37\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-vicRenew-37) The battery was commissioned on time in December 2021, a year after contract,[\[38\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-38) with an estimated [return on investment](https://en.wikipedia.org/wiki/Return_on_investment "Return on investment") of 2.4.[\[39\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-39)
In December 2021, Strata Solar, an American commercial solar services provider, deployed a 100 MW/400 MWh energy storage facility in [Ventura County](https://en.wikipedia.org/wiki/Ventura_County,_California "Ventura County, California"), California, using 142 Megapacks.[\[40\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-40) The deployment replaced a natural-gas peaker plant.
As of June 2022, [Pacific Gas and Electric Company](https://en.wikipedia.org/wiki/Pacific_Gas_and_Electric_Company "Pacific Gas and Electric Company") (PG\&E) operates a [182\.5 MW/730 MWh 256-Megapack system at Moss Landing](https://en.wikipedia.org/wiki/Moss_Landing_Power_Plant#Elkhorn_115_kV "Moss Landing Power Plant"), in [Monterey County](https://en.wikipedia.org/wiki/Monterey_County,_California "Monterey County, California"), California.[\[41\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-41)[\[42\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-42)[\[3\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-blog-3)[\[43\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-43)
[TransAlta](https://en.wikipedia.org/wiki/TransAlta "TransAlta") owns and operates a 10 MW/20 MWh Megapack system near [Pincher Creek](https://en.wikipedia.org/wiki/Pincher_Creek "Pincher Creek"), Alberta, Canada, which was completed in October 2020.[\[44\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-44) As of July 2024, it is one of ten active storage sites in Alberta,[\[45\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-45) and all are Megapacks.
Grid-scale battery standards and fire containment practices are at an early stage of development.[\[46\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-:1-46)
Fire risks are one factor that has delayed the deployment of some utility energy storage systems. Most battery fires cannot be extinguished with water, which is the primary firefighting technique in most communities. A fire in a single cell can cascade to others via [thermal runaway](https://en.wikipedia.org/wiki/Thermal_runaway "Thermal runaway"), possibly in milliseconds, potentially creating a major hazard.[\[46\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-:1-46)
Preventing fires involves multiple layers of protection. First, is to prevent fire in a single cell, by eliminating sparks and short circuits. However, grid-scale systems face potential problems such as coolant leaks and faulty installation. Venting flammable gases and improved insulation reduce cascade risks. Placing controls outside of the container gives more management options. Instead of suppressants, monitoring the situation while watering surrounding areas can help contain the fire. Sensors that track local weather conditions can help avoid overheating. Lithium-free designs with lower fire risks are possible.[\[46\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-:1-46)
"Plume modeling" attempts to predict how gases from burning battery chemicals might travel. The gases produced vary across battery types, [hydrogen fluoride](https://en.wikipedia.org/wiki/Hydrogen_fluoride "Hydrogen fluoride") (HF) is of particular concern even at low concentrations. A later plume analysis by Vistra reported that concentrations of HF above California exposure limits could spread across an area 1300 feet in diameter under wind conditions that occur 7 percent of the year.[\[46\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-:1-46)
In [Raquette Lake](https://en.wikipedia.org/wiki/Raquette_Lake "Raquette Lake"), New York, the town passed a one-year moratorium preventing battery installation in response to protests citing fires at three New York battery installations. Protestors cited a fire in [Lyme, New York](https://en.wikipedia.org/wiki/Lyme,_New_York "Lyme, New York") that burned for four days.[\[46\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-:1-46)
A Megapack ignited at Pacific Gas and Electric's (PG\&E's) Moss Landing, California facility in September 2022. The fire led to a day-long shelter-in-place advisory. PG\&E stated that safety measures included thermal alarms that can shut down the system, an incident command center, an audible evacuation alarm, pre-fire planning with local fire crews and emergency shut down protocols. Heat-suppression systems, intended to curb thermal runaway, were accidentally triggered, dousing batteries in water that caused arcing and short circuiting. The plant was shut down for months.[\[47\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-47) Vistra's third installation in Moss Landing adopted the outdoor container model instead of putting the racks under a single roof. (Vistra stated that the outdoor design was chosen to expedite construction.)[\[46\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-:1-46)[\[48\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-48)
In July 2021, one of the 212 Megapack modules at the [Victorian Big Battery](https://en.wikipedia.org/wiki/Victorian_Big_Battery "Victorian Big Battery") project caught fire[\[49\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-49) due to a coolant leak while the battery was unmonitored. That ignited the adjacent Megapack.[\[37\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-vicRenew-37) Three days later, the fire had burnt itself out as preferred by the fire department.[\[50\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-renewVBB-50)[\[51\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-mooraboolfire-51)[\[46\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-:1-46)
A 50 MW / 100 MWh battery project using Tesla Megapack 2 was under construction in [Bouldercombe](https://en.wikipedia.org/wiki/Bouldercombe "Bouldercombe") near Rockhampton, Queensland.[\[52\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-52) The [alternating current](https://en.wikipedia.org/wiki/Alternating_current "Alternating current") section caught fire in September 2023 and spread to the cells of one Megapack module, also damaging the adjacent module. Both modules are being replaced by Tesla. Other 36 modules were operational a couple of days later.[\[53\]](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_note-53)
- [Tesla Supercharger Station](https://en.wikipedia.org/wiki/Tesla_Supercharger "Tesla Supercharger")
1. ^ [***a***](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_ref-Castelvecchi_2015_1-0) [***b***](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_ref-Castelvecchi_2015_1-1)
Castelvecchi, Davide (May 1, 2015). ["Will Tesla's battery change the energy market?"](http://www.nature.com/articles/nature.2015.17469). *Nature* nature.2015.17469. [doi](https://en.wikipedia.org/wiki/Doi_\(identifier\) "Doi (identifier)"):[10\.1038/nature.2015.17469](https://doi.org/10.1038%2Fnature.2015.17469). [ISSN](https://en.wikipedia.org/wiki/ISSN_\(identifier\) "ISSN (identifier)") [0028-0836](https://search.worldcat.org/issn/0028-0836). [S2CID](https://en.wikipedia.org/wiki/S2CID_\(identifier\) "S2CID (identifier)") [138439698](https://api.semanticscholar.org/CorpusID:138439698). [Archived](https://web.archive.org/web/20210808222508/https://www.nature.com/articles/nature.2015.17469) from the original on August 8, 2021. Retrieved May 27, 2020.
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Lambert, Fred (October 30, 2018). ["Tesla is working on a new 'Megapack' energy module at Gigafactory 1"](https://electrek.co/2018/10/30/tesla-megapack-energy-module-gigafactory/). *Electrek*. [Archived](https://web.archive.org/web/20191206165139/https://electrek.co/2018/10/30/tesla-megapack-energy-module-gigafactory/) from the original on December 6, 2019. Retrieved April 5, 2020.
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Balderas, Christian (September 22, 2022). ["Residents left worried after PG\&E's Tesla-powered battery plant catches fire"](https://www.ksbw.com/article/moss-landing-residents-worried-for-their-safety-after-pgandes-tesla-battery-fire/41323388). *KSBW*. Retrieved September 10, 2023.
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Murray, Cameron (September 21, 2022). ["Fire at PG\&E's Tesla battery storage facility in Moss Landing under control, authorities lift closures"](https://www.energy-storage.news/fire-at-pges-tesla-battery-storage-facility-in-moss-landing-under-control-authorities-lift-closures/). *Energy Storage News*. [Archived](https://web.archive.org/web/20221205172145/https://www.energy-storage.news/fire-at-pges-tesla-battery-storage-facility-in-moss-landing-under-control-authorities-lift-closures/) from the original on December 5, 2022. Retrieved September 22, 2022.
49. **[^](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_ref-49)**
["Fire breaks out at giant battery project near Geelong"](https://www.abc.net.au/news/2021-07-30/tesla-battery-fire-moorabool-geelong/100337488). *ABC News*. July 30, 2021. [Archived](https://web.archive.org/web/20211014120514/https://www.abc.net.au/news/2021-07-30/tesla-battery-fire-moorabool-geelong/100337488) from the original on October 14, 2021.
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Parkinson, Giles (August 1, 2021). ["Tesla Megapack still burning, no word if any delays to Victoria Big Battery"](https://reneweconomy.com.au/tesla-megapack-still-burning-no-word-if-any-delays-to-victoria-big-battery/). *RenewEconomy*. [Archived](https://web.archive.org/web/20210801212811/https://reneweconomy.com.au/tesla-megapack-still-burning-no-word-if-any-delays-to-victoria-big-battery/) from the original on August 1, 2021. "no point trying to put the fire out, merely contain it and stop it from spreading to other containers"
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Morgan, Lucy Battersby, Cassandra (August 2, 2021). ["Blaze at Tesla Big Battery extinguished after three days"](https://www.theage.com.au/national/victoria/blaze-at-tesla-big-battery-extinguished-after-three-day-battle-for-control-20210802-p58f6x.html). *The Age*. [Archived](https://web.archive.org/web/20211123183415/https://www.theage.com.au/national/victoria/blaze-at-tesla-big-battery-extinguished-after-three-day-battle-for-control-20210802-p58f6x.html) from the original on November 23, 2021.
`{{cite web}}`: CS1 maint: multiple names: authors list ([link](https://en.wikipedia.org/wiki/Category:CS1_maint:_multiple_names:_authors_list "Category:CS1 maint: multiple names: authors list"))
52. **[^](https://en.wikipedia.org/wiki/Tesla_Megapack#cite_ref-52)**
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Peacock, Bella (November 7, 2023). ["Queensland Bouldercombe battery fire ignited on grid side, not within Megapack, analysis finds"](https://www.pv-magazine-australia.com/2023/11/07/queensland-bouldercombe-battery-fire-ignited-on-grid-side-not-within-megapack-analysis-finds/). *pv magazine Australia*. [Archived](https://web.archive.org/web/20231218000008/https://www.pv-magazine-australia.com/2023/11/07/queensland-bouldercombe-battery-fire-ignited-on-grid-side-not-within-megapack-analysis-finds/) from the original on December 18, 2023. Retrieved December 17, 2023.
- [Official website](https://www.tesla.com/megapack) |
| Shard | 152 (laksa) |
| Root Hash | 17790707453426894952 |
| Unparsed URL | org,wikipedia!en,/wiki/Tesla_Megapack s443 |