long-duration storage

The MIT spinout plans to demonstrate a 1 MWh thermal battery in Bedford, Massachusetts this year, using graphite bricks heated to 2,400 degrees Celsius and liquid tin to deliver grid-scale storage at a claimed $25 per kilowatt-hour, a fraction of lithium-ion costs.

A 300 MW Form Energy iron-air battery paired with 1.6 GW of wind and solar will power Google's new Pine Island data center, marking the largest energy storage project ever announced by capacity.