ClimateCast with Tom Heap cover image

ClimateCast with Tom Heap

Heat: The small business with a big plan to cut carbon emissions

Oct 7, 2023
A small business in Hampshire has developed a heat battery that could cut global carbon emissions by 4%. The battery uses aluminium and gravel to produce heat on demand. The podcast explores the challenges of decarbonizing heat and the potential of heat storage in reducing reliance on fossil fuels.
20:51

Podcast summary created with Snipd AI

Quick takeaways

  • Caldera has developed heat batteries made of basalt fragments and aluminum that can store and decarbonize heat, offering a solution to decarbonizing industrial processes.
  • Compared to electricity batteries, heat batteries are significantly cheaper, can store heat for longer periods, and have the potential to eliminate 4% of global carbon emissions.

Deep dives

Heat Batteries: A Game Changer for Decarbonizing Heat

Caldera, a company in Hampshire, has developed heat batteries that store and decarbonize heat, addressing the challenge of decarbonizing industrial processes that rely heavily on fossil fuels. These heat batteries are made of basalt fragments and aluminum, which are heated to high temperatures and surrounded by a vacuum to retain heat. The technology allows for the efficient storage and use of electricity as heat, displacing the need for natural gas. The applications for these heat batteries are vast, particularly in industries such as food manufacturing, brewing, distilling, and pharmaceuticals.

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