Tesla Powerwall home battery revealed, rechargers from solar panels

Tesla is not just an automotive company, it's an energy innovation company, and they are very serious about creating clean and sustainable energy. Tesla Energy is a critical step in this mission to enable zero emission power generation. With Tesla Energy, Tesla is amplifying its efforts to accelerate the move away from fossil fuels to a sustainable energy future with Tesla batteries, enabling homes, business, and utilities to store sustainable and renewable energy to manage power demand, provide backup power and increase grid resilience. Tesla is already working with utilities and other renewable power partners around the world to deploy storage on the grid to improve resiliency and cleanliness of the grid as a whole. To do this, Tesla has revealed a revolutionary new concept, which they hope will change the world as we know it.

The Tesla Powerwall is a rechargeable lithium-ion battery designed to store energy at a residential level for load shifting, backup power and self-consumption of solar power generation. The 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 mounts seamlessly on a wall and is integrated with the local grid to harness excess power and give customers the flexibility to draw energy from their own reserve. The battery can provide a number of different benefits to the customer including load shifting – where the battery can store and charge electricity depending on the owners usage – and it can also back up power in case of a power outage.

The 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 Powerwall is optimized to provide backup when the grid goes down, providing power for your home when you need it most. 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.
Tesla's selling price to installers is $3500 (Rs. 2.1 lakh) for 10kWh and $3000 (Rs. 1.8 lakh) for 7kWh. The price excludes inverter and installation and deliveries begin in the US late summer.