1 billion Tesla Powerwalls15 Mar 2022 22:53
Convert Oil Wells to Solve the Solar Storage Problem The odd coupling of oil wells and solar may lead to large-scale, long-term solar storage
https://spectrum.ieee.org/oil-wells-as-solar-thermal-wellsprings
"There are currently about 6 cubic miles of underground oil reservoirs that are being used for enhanced oil recovery in California that could potentially be good sites for Hyperlight’s technology, Kramer says. “If we employ this [in] those oil reservoirs, to heat them up to the level that enhanced oil recovery is currently heating them, they have the storage capacity of 1 billion Tesla Powerwalls.”