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 customisation 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 Powerwall
Powerwall is a rechargeable home battery system that can be installed with or without solar.
Powerwall 3 is designed for owners installing a new solar and storage system. Powerwall 3 features an integrated solar inverter for higher efficiency and more compact installation. Powerwall 2 is designed to be added on to existing solar systems and is compatible with all major inverter brands.
| Powerwall 2 | Powerwall 3 | |
|---|---|---|
|
|
|
| Energy Capacity | 13.5 kWh1 | 13.5 kWh1 |
| On-Grid Power | 5 kW continuous | Up to 11.04 kW, depending on local conditions |
| Backup Power |
7 kW peak 106 A motor start Quick backup transition |
Up to 11.04 kW, depending on local conditions 185 A motor start Quick backup transition |
| Scalable | Up to 10 units |
Up to 4 units System expansion available soon 40.5 kWh max addition per unit |
| Size and Weight |
H x W x D 1,150 mm x 753 mm x 147 mm 114 kg |
H x W x D 1,105 mm x 609 mm x 193 mm 130 kg |
| Inverter | X |
Solar-to-grid efficiency 97.5% 3 solar inputs with Maximum Power Point Trackers |
| Installation |
-20°C to 50°C Water and dust resistance |
-20°C to 50°C Flood and dust resistance2 Integrated inverter and system controller |
| Warranty | 10 years | 10 years |
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 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 grid is offline during a power outage. With Tesla, when your Powerwall system changes status, such as the 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 electricity rates are low and discharge when electricity rates are high, generating automatic savings. Powerwall will also provide quick backup power by detecting grid outages and automatically becoming the home's main power source.
1 See Powerwall Technical Specifications for more details.
2 Flood resistant up to 0.6 m