Energy Support

How Powerwall Works

Powerwall gives you the ability to store energy for later use and works with solar to provide key energy security and financial benefits. Each Powerwall system is equipped with energy monitoring, metering and smart controls for owner customization using the Tesla app. The system learns and adapts to your energy use over time and receives over-the-air updates to add new features and enhance existing ones.

Models of Powerwalls

Powerwall is a rechargeable home battery system that can be installed with solar.

Powerwall 3 and Powerwall+ are designed for owners installing a new solar and storage system. Solar systems are integrated directly into the Powerwall, for higher efficiency and more compact installation with solar inverters being included. Powerwall 2  is designed to be added on to existing solar systems and is compatible with all major inverter brands.

Model

Powerwall 2
Powerwall 2 on a white background

Powerwall+
Powerwall+ on a white background

Powerwall 3
Powerwall 3 on a white background

Energy Capacity

Powerwall 2
13.5 kWh1

Powerwall+
13.5 kWh1

Powerwall 3
13.5 kWh1

On-Grid Power

Powerwall 2
5 kW continuous

Powerwall+
7.6 kW / 5 kW continuous

Powerwall 3
11.5 kW continuous

Backup Power

Powerwall 2
7 kW peak
106A LRA motor start
Seamless backup transition

Powerwall+
9.6 kW / 7 kW continuous
22kW / 10kW peak
118A LRA motor start
Seamless backup transition

Powerwall 3
11.5 kW continuous
185 LRA motor start
Seamless backup transition

Scalable

Powerwall 2
Up to 10 units

Powerwall+
Up to 4 units

Powerwall 3
System expansion available anytime
40.5 kWh max addition per unit

Size and Weight

Powerwall 2
H x W x D
45.3" x 29.6" x 5.75"
251.3 lbs

Powerwall+
H x W x D
62.8" x 29.7" x 6.3"
343.9 lbs

Powerwall 3
H x W x D
43.25" x 24" x 7.6"
287 lbs

Inverter

Powerwall 2
x

Powerwall+
Solar-to-grid efficiency 97.5%
4 solar inputs with Maximum Power Point Trackers

Powerwall 3
Solar-to-grid efficiency 97.5%
6 solar inputs with
Maximum Power Point Trackers

Installation

Powerwall 2
Floor or wall mounted
Indoor or outdoor
-4°F to 122°F
Water and dust resistance

Powerwall+
Integrated inverter and system controller
-4°F to 122°F
Water and dust resistance

Powerwall 3
Integrated inverter and system controller
-4°F to 122°F
Flood and dust resistance2

Certifications

Powerwall 2
Meets North American safety and EMI standards

Powerwall+
Meets North American safety and EMI standards

Powerwall 3
Meets North American safety and EMI standards

Warranty

Powerwall 2
10 years

Powerwall+
10 years

Powerwall 3
10 years

1 See Powerwall Technical Specifications for more details.

2 Flood resistant up to 2'

Powerwall 2 Powerwall+ Powerwall 3
Energy Capacity 13.5 kWh1 13.5 kWh1 13.5 kWh1
On-Grid Power 5 kW continuous 7.6 kW / 5 kW continuous 11.5 kW continuous
Backup Power 7 kW peak
106A LRA motor start
Seamless backup transition
9.6 kW / 7 kW continuous
22kW / 10kW peak
118A LRA motor start
Seamless backup transition
11.5 kW continuous
185 LRA motor start
Seamless backup transition
Scalable Up to 10 units Up to 4 units System expansion available anytime
40.5 kWh max addition per unit
Size and Weight 45.3" x 29.6" x 5.75"
251.3 lbs
62.8" x 29.7" x 6.3"
343.9 lbs
43.25" x 24" x 7.6"
287 lbs
Inverter X Solar-to-grid efficiency 97.5%
4 solar inputs with Maximum Power Point Trackers
Solar-to-grid efficiency 97.5%
6 solar inputs with
Maximum Power Point Trackers
Installation Floor or wall mounted
Indoor or outdoor
-4°F to 122°F
Water and dust resistance
Integrated inverter and system controller
-4°F to 122°F
Water and dust resistance
Integrated inverter and system controller
-4°F to 122°F
Flood and dust resistance2
Warranty 10 years 10 years 10 years

1 See Powerwall Technical Specifications for more details.

2 Flood resistant up to 2'

With Solar

When the sun rises, solar begins powering the home. When additional power is required for the home, the home can pull it from the utility grid.

Powerwall is charged by solar during the day, when solar panels are producing more electricity than the home is consuming. Powerwall then stores that energy until the home needs it, such as when solar is no longer producing at night, or when the utility grid is offline during a power outage. With Tesla, when your Powerwall system changes status, such as the utility grid going down or offline, you can expect to receive notifications from the Tesla app.

When the sun comes out the next day, solar recharges Powerwall so you have a cycle of clean, renewable energy.

Without Solar

If your electricity rates vary throughout the day, Powerwall can charge when your utility’s electricity costs are low and discharge when electricity costs are high, generating automatic savings. Powerwall will also provide seamless backup power by detecting grid outages and automatically becoming the home's main power source.

Without Backup

When Powerwall+ is installed by itself with a non-backup configuration, it fully operates when the grid is active but does not provide power when there is a grid outage. Owners can use the power they generate with solar at night, export energy at peak prices and participate in the Tesla Virtual Power Plant.

Note: Non-backup is not currently supported for Powerwall 2 and Powerwall 3.

Modes Powerwall+ configured with Backup Gateway or Backup Switch Powerwall+ configured without backup
Self-Powered
Time-Based Control
Virtual Power Plant
Backup Reserve
Features Powerwall+ configured with Backup Gateway or Backup Switch Powerwall+ configured without backup
Utility Rate Plans
Storm Watch
Off-Grid Vehicle Charging
Go Off-Grid
Impact Cards Powerwall+ configured with Backup Gateway or Backup Switch Powerwall+ configured without backup
Self-Powered
Solar and Energy Value
Solar Offset
Time-of-Use
Backup History

Learn more about Powerwall modes and available features.

Future Backup Upgrades 

A non-backup system can be upgraded to include backup features later using Backup Switch. Reach out to your installer about the outlook for upgrading to a backup system. 

Note: Californian utilities are expected to approve Backup Switch for residential homes by 2024.