Tesla Energy is Elon Musk's battery system that can power homes, businesses, and the world

The Powerwall can be used to create smart microgrids or supply back-up power

 Source: http://www.theverge.com/2015/5/1/8525309/tesla-energy-elon-musk-battery-announcement

      Tesla has finally taken the wraps off Tesla Energy, its ambitious battery system that can work for homes, businesses, and even utilities. The system breaks down into two separate products: the Powerwall is a home battery system, that comes in a 10 kWh version for $3,500, or a 7 kWh model for $3,000, excluding installation and the inverter. The unit is about three feet by four feet in size and six inches thick, and comes with integrated heat management and can fit either on the inside or outside of the wall of your home. The system is connected to the internet — Elon Musk said that the system can be used to create "smart microgrids" — and can be used as a redundancy system, or potentially allow a home to go off the power grid entirely. "The whole thing is a system that just works," Musk told reporters during a briefing this evening.
The big brother of the Powerwall is what Musk and his team are calling Powerpack — and it's where things get really interesting. They describe it as an "infinitely scalable system" that can work for businesses, in industrial applications, and even public utility companies, that comes in 100 kWh battery blocks that can scale from 500 kWH all the way up to 10 MWh and higher. "Our goal here is to change the way the world uses energy at an extreme scale."

Musk's ambitions with the battery are tremendous. He opened the press event by invoking climate change, and saying that it's "within the power of humanity" to change the way we produce and use power. He went on to say that he sees the Gigafactory under construction in Nevada as a product, the first of many. With 160 million Powerpacks, we could power the United States, he said, and with 2 billion, the world. The entire presentation and party, Musk said, was powered by stored solar energy.
While the system is being announced today, Powerwall has been testing for a year, and has already been on sale to select customers. For the Powerpack system, Tesla will start taking orders later this year and then really ramp up production as Tesla's battery-building Gigafactory comes online...

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