Fourth Power says its ultra-high temperature "sun in a box" energy storage tech is more than 10X cheaper than lithium-ion batteries, and vastly more powerful and efficient than any other thermal ...

The Series A round, led by venture capital firm DCVC, with participation from Breakthrough Energy Ventures and Black Venture Capital Consortium, will support the construction of the company's 1 MWh-e ...

The firm has proved its thermal batteries can store energy in carbon blocks. It will use this latest round to scale commercial viability. Fourth Power, maker of thermal batteries, raised a $19 million ...

Fourth Power’s take on long-duration energy storage sounds like something out of a James Bond film. The thermal batteries come complete with superheated liquid tin and argon-filled hermetically sealed ...