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Tesla unveils home energy storage unit

Powerwall tipped to be a game changer for the utilities sector.

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Tesla, News

Electric vehicle manufacturer Tesla Motors has unveiled a new home energy storage solution that it believes will accelerate the shift away from fossil fuels towards a sustainable energy future.

The Tesla Powerwall is a rechargeable lithium-ion battery designed to enable homeowners as well as businesses and utilities to store renewable energy to manage power demand, provide backup power and increase grid resilience.

Starting at $3,000 for a 7 kWh unit it is thought the package could be as little as a third of the price of comparable products previously available on the market.

Tesla's lead installation partner for the home battery kit will be SolarCity Corp, the solar installer backed by Tesla CEO Elon Musk.

Powerwall consists of Tesla’s lithium-ion battery pack, liquid thermal control system and software that receives dispatch commands from a solar inverter.

The unit can be mounted on a wall inside a garage or out and is integrated with the local grid to harness excess power and give customers the flexibility to draw energy from their own reserve.

Powerwall is available in 10kWh, optimized for backup applications or 7kWh optimized for daily use applications. Both can be connected with solar or grid and both can provide backup power.

The 10kWh version is optimised to provide backup when the grid goes down, providing power for your home when you need it most.
Multiple batteries may be installed together for homes with greater energy need, up to 90 kWh total for the 10 kWh battery and 63 kWh total for the 7 kWh battery.

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.

Palo Alto-headquartered Tesla will initially manufacture the batteries at its motor factory in California but will move production to a purpose built factory in Nevada next year.

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