Bill Gates-funded startup Rondo turns Solar or Wind into Heat

Thermal energy storage is one of the cheapest storage options for the 100% renewable grid of the future. The costly part has been converting the heat back into electricity to return to the grid. So why not just sell the heat itself? The Breakthrough Energy Ventures-funded startup Rondo Energy proposes just that. Currently, the world’s largest and most carbon-intensive industries use far more heat than electricity.

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