Tesla Announces ‘Powerwall’ Battery – Home Energy Storage

Tesla Powerwall Battery


UPDATE : December 24, 2015 – Tesla Powerwall pre-ordering now available via Energy Matters.


Tesla announced a short time ago details of Tesla Energy, a new range of batteries for homes, businesses and utility scale operations.

The residential energy storage solution is called “Powerwall”, a rechargeable lithium-ion battery designed for load shifting, backup power and self-consumption of electricity generated by solar panels.

The Powerwall is a wall mounted unit made up of the battery pack, a liquid thermal control system and related software.

Powerwall will be available in a 10kWh configuration optimised for backup applications or a 7kWh system designed for daily use .

“When paired with solar power, the 7kWh Powerwall can be used in daily cycling to extend the environmental and cost benefits of solar into the night when sunlight is unavailable,” states Tesla.

Tesla Powerwall specifications:

  • Mounting: Wall Mounted Indoor/Outdoor
  • Storage capacity: 7kWh or 10kWh
  • Continuous Power: 5kW*
  • Peak Power: 7kW*
  • Round Trip Efficiency: >92%
  • Operating Temperature Range: -20C (-4F) to 43C (110F)
  • Warranty: 10 years
  • Dimensions: H: 1300mm W: 860mm D:180mm

One of Tesla’s partners for the PowerWall is SolarEdge; a leading solar inverter manufacturer.

“Building on SolarEdge’s proven DC optimized inverter proven and Tesla’s leading automotive-grade battery technology, the solution will require only a single SolarEdge inverter to manage both PV and storage functions. The system is designed for efficient, outdoor installation and includes remote monitoring and troubleshooting to keep operations and maintenance costs low,” says Tesla.

Also announced were Tesla’s business solutions and utility scale battery systems; with the latter consisting of 100kWh battery blocks that can be grouped to scale from 500kWh to 10MWh+.

Tesla says PowerWall will be available around August – at this stage it’s not clear if that is only in the USA initially.

As mentioned earlier this week, Energy Matters intends offering Tesla/SolarEdge battery based systems and also Fronius Hybrid home energy storage solutions to Australian customers when available. Those interested in residential energy storage system options can register for pre-release announcements from Energy Matters by clicking here.

* UPDATE: On June 11, 2015; Elon Musk announced the Powerwall battery’s output would be increased from 2kW continuous and 3kW peak to 5kW continuous and 7kW peak output – without increasing the price.


Residential Energy Storage Systems