On Thursday, April 30, Elon Musk took to a stage in Tesla’s Hawthorne, CA facility to officially announce launch the company’s new branch: Tesla Energy, and to announce the first two products: the Tesla Powerwall and the Tesla Powerpack. I am far from qualified to comment on the technical specifications of the new devices, thus I will defer to the official release from Tesla:
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.1
The main aim, for the consumer model, is to retain solar-produced energy. The average home consumes more energy during mornings and night. Peak solar energy production, however, happens during the middle of the day. The excess solar energy is often sold back to the energy companies, only to be re-purchased during peak usage times. The aim of the Powerwall is to store this energy that is gather during peak-solar times, so as not to buy back that same energy at higher rates from the power company.
The average home uses more electricity in the morning and evening than during the day when solar energy is plentiful. Without a home battery, excess solar energy is often sold to the power company and purchased back in the evening. This mismatch adds demand on power plants and increases carbon emissions. Powerwall bridges this gap between renewable energy supply and demand by making your home’s solar energy available to you when you need it.2
The Powerwall is set to ship this summer. You can pre-order 2 different models: $3500 for 10kWh and $3000 for 7kWh.
Elon Musk, Tesla’s CEO, went into a great deal of detail during the announcement. You can watch it in full below: