ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,487,011, issued on Dec. 2.
"Renewable GeoBattery energy storage" was invented by Eric L Berger (Bakersfield, Calif.), Paul E Harness (Bakersfield, Calif.) and Frank Lawrence (Bakersfield, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Excess energy generated from renewable energy (solar or wind sources) is used to heat a liquid which is injected into a naturally-occurring permeable, porous subterranean reservoir where it heats constituent reservoir grain matrix, thereby storing energy and modifying the reservoir's storage capacity and transmissibility, and energy is recovered, as demands require, by producing hot reservoir fluids whose heat is tra...