Bill Gates’ Breakthrough Energy Backs Startup That Uses Liquid Tin to Store Energy

Bill Gates’ Breakthrough Energy Ventures is backing a new thermal storage startup, expanding its investments in long-duration power backup. Fourth Power converts renewable power to heat, storing it for future use. Relying on liquid tin, the thermal battery transfers heat to stacks of carbon blocks at extremely high temperatures, which can later be discharged as electricity through…

Fourth Power raises $19M to scale new thermal battery technology using liquid tin

Thermal energy storage is a key enabling technology for decarbonizing both industrial energy use and electric utilities, Blaine Collison, executive director of the Renewable Thermal Collaborative, said in an email. For the power sector, it is a means to manage renewables’ intermittency — instead of curtailing peak-production solar or wind, or facing low or negative pricing…

Fourth Power Secures $19M for Low-Cost Utility-Scale Thermal Energy Storage to Enable a Fully Renewable Grid

To meet the growing demand for renewable energy on the grid, Fourth Power has received $19 million in Series A funding to scale its cost-effective groundbreaking thermal battery technology. The investment round was led by the venture capital firm DCVC, with participation from Breakthrough Energy Ventures (BEV) and Black Venture Capital Consortium. In addition to helping scale the…