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Len Rosen's picture
Principal Author and Editor 21st Century Tech Blog

Futurist, Writer and Researcher, now retired, former freelance writer for new technology ventures. Former President & CEO of Len Rosen Marketing Inc., a marketing consulting firm focused on...

  • Member since 2018
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  • Dec 20, 2021

Compressed air storage is a technology that increasingly looks like it will be a part of the energy mix as the planet moves to a renewable-dominant power generation infrastructure to achieve net-zero emissions by 2050. Relatively inexpensive to build, the technology developed by Hydrostor is called A-CAES. It uses surplus energy from the grid to fire up an air compressor. As the air compresses it heats up. The heat is then extracted and stored. The compressed air is pumped into pressure-sealed storage which in the two operating Hydrostor plants is found 300 metres underground. When peak energy demand requires it, the facility floods the storage area with water forcing the compressed air upward which is then recombined with the stored heat to drive a generator. The first California plant to be commissioned will replace the Diablo Nuclear Power Plant providing 8 hours of continuous power to the grid.


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