Cheap Dirt Piles Power 24/7 Solar
2025-08-25
Standard Thermal aims to make solar PV energy available 24/7/365 at a price competitive with US natural gas. Their technology stores energy as heat in inexpensive dirt piles, using co-located solar arrays. Electric heaters convert electricity to heat, stored at 600°C or higher. This low-cost thermal storage system, significantly cheaper than batteries, targets solar developers with excess summer energy, isolated users relying on expensive fuels, and eventually, repowering coal plants by generating steam on demand.
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thermal storage