Headquartered in Somerville, MA and with facilities in the San Francisco Bay Area and the Pittsburgh metropolitan area, we are working to accelerate the development of our breakthrough low-cost energy storage technology to enable a reliable, secure, and fully-renewable electric grid year-round.

We would love to hear from you


Somerville, MA

30 Dane St.
Somerville, MA 02143

Berkeley, CA

2810 Seventh St.
Berkeley, CA 94710

Eighty Four, PA

42 84 Drive
Eighty-Four, PA 15330