Tesla launches line of Li-ion stationary storage systems for homes and businesses: POWERWALL and POWERPACK
|Multiple POWERWALL units may be combined. Click to enlarge.|
As widely expected, Tesla CEO Elon Musk unveiled the company’s new product line: scalable stationary battery systems for homes, businesses and beyond. Available for immediate order on the Tesla Web site (teslaenergy.com or teslamotors.com/powerwall) is the modular wall-mounted POWERWALL system, which is targeted at homes and perhaps some small commercial applications, Musk said. Delivery is projected for sometime later this summer (3-4 months from now.)
The sleek, sculpture-like Li-ion packs come in 7 kWh ($3,000) and 10 kWh ($3,500) configurations. Both are guaranteed for 10 years (with an optional 10-year extension), and can be combined to up to 9 units—i.e., up to 90 kWh of storage. The packs contain all the integrated safety systems, the liquid thermal control and the DC/DC converter, and work with solar systems straight out of the box, Musk said.
|Tesla POWERWALL unit. Click to enlarge.|
Round-trip DC efficiency is 92%, power output is 2 kW continuous, 3.3 kW peak. Voltage is 250-450 volts, with 5 amp nominal current, 8.5 amp peak output. The POWERWALL units are rated for indoor or outdoor installation, and operate in the range of -4°F to 110°F / -20°C to 43°C. The POWERWALL requires installation by a trained electrician; the AC-DC inverter is not included.
The 220 lb (100 kg) unit measures 52.1" x 33.9" x 7.1" (130 cm x 86 cm x 18 cm), and comes, noted Musk, in different colors.
The fact that it is wall-mounted is vital. You don’t need a battery room filled with nasty batteries. A normal household can mount these in the garage or outside the house.—Elon Musk
The POWERWALL units will initially be assembled at the Fremont plant, Musk said, and the ramp will be slow. a plans to transition production to the GigaFactory in Nevada next year, resulting in a higher ramp.
For larger scale systems, Tesla is proposing the industrial POWERPACK, which, Musk said, is “designed to scale infinitely. This could be a GWh solution.” Musk said that a Tesla is already working with a utility that wants to do a 250 MWh pilot. (The entire evening livestream event was powered by POWERPACKs.)
At the conclusion of the streamed announcement, Musk said that solar panels and batteries represented “the only path I know” that could transition the world to sustainable energy. He suggested that 2 billion POWERPACKs could fully transition the world to a solar/battery future, and observed that it is “within the power of humanity to do so.”