Liquid Metal BatteryThe Ambri Liquid Metal Battery stores energy gathered from wind and solar reliably, inexpensively, and efficiently. The technology will fundamentally change the way power grids operate, increasing the contribution from renewable resources and reducing the need to build traditional power plants.AMBRI
53 Brigham S., Unit 9
Marlborough, MA 01752-5128
Chief Commercial Officer:
Adam Briggs
Grid level storage
Molten Oxide
Development of technology to produce steel without the use of fossil fuels and with no greenhouse gas emissions. Product is of higher quality and lower cost than metal produced conventionally.

Boston Metal is developing and commercializing the technology.

6C Gill Street
Woburn, MA 01801-1721
CEO: Tadeu Carneiro
Metals production
Aluminum Sulfur
Created from aluminum metal, elemental sulfur, and common salt, the Avanti Battery achieves the goals of high energy, extremely low cost, rapid charging and fire resistance. Avanti will become the stand-alone power solution for small-scale stationary energy storage to be paired with renewables for continuous, uninterruptible power output.AVANTI BATTERY COMPANY
149 Grove Street
Watertown, MA 02472
CEO: Luis Ortiz
Energy storage for
single-family homes and
small to medium
Lithium Metal
Vertically integrated production of pure lithium metal negative electrodes for mobile applications, higher energy density than lithium-ion. Pure Lithium addresses the significant environmental, cost, supply chain and quality issues preventing the mass adoption of lithium metal batteries in electric vehicles.PURE LITHIUM
56 Roland Street
Boston, MA 02129
CEO: Emilie Bodoin
Electric vehicles