Fourth Power makes renewable energy an on-demand energy source through utility-scale, thermal battery technology. With the ability to provide flexible-duration energy storage, we can start small and grow with the grid to save consumers money and ensure a clean energy future.

Dec 23, 2024 · The Fourth Power Content and Fourth Power Marks are protected by copyright and trademark laws (and various other intellectual property rights and unfair competition laws) and treaties in the United States and around the world.

Fourth Power ’s technology is based on the ability to pump liquid metal at extreme temperatures using all graphite mechanical pumps. This advancement was pioneered by Fourth Power’s founder Dr. Asegun Henry, who holds the Guinness World Record.

Fourth Power is headquartered in Cambridge, MA and is conducting R&D in Middleton, MA. We are always interested in hearing from talented, creative, and mission-driven engineers and experts who are passionate about fighting climate change.

Jun 6, 2024 · Fourth Power has been named a 2024 World Economic Forum (WEF) Technology Pioneer. The diverse community of world-renowned start-ups fostered by WEF all share a goal to positively shape a shared future through original solutions.

May 23, 2024 · Fourth Power is the winner in the energy category for Fast Company’s 2024 World Changing Ideas Awards. Right now, though lithium-ion batteries have dropped in price, they’re still expensive enough that they don’t work well for long-term energy storage.

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

Nov 20, 2022 · Fourth Power Named 2024 World Economic Forum Technology Pioneer; Fourth Power is a winner in Fast Company’s 2024 World Changing Ideas Awards. Bill Gates’ Breakthrough Energy Backs Startup That Uses Liquid Tin to Store Energy; Three breakthroughs that earned Fourth Power its $19M Series A

At our core, Fourth Power aspires to transform renewable energy into the most cost-effective and accessible source of power generation through thermal storage. More than a decade in the making, our utility-scale thermal battery technology can provide short- and long-duration energy storage (LDES) for renewables and then dispatch electricity to ...

Dec 12, 2023 · Fourth Power is a winner in Fast Company’s 2024 World Changing Ideas Awards. Bill Gates’ Breakthrough Energy Backs Startup That Uses Liquid Tin to Store Energy; Three breakthroughs that earned Fourth Power its $19M Series A; Fourth Power raises $19M to scale new thermal battery technology using liquid tin