Cleaning up the 2.6 million inactive oil and gas wells in North America will require $287B, take >100 years, and leak more than 664 million tons CO2e of methane. Also wind and solar will never achieve majority market share without energy storage capable of both low-cost short and long duration. Renewell incentivizes oil and gas companies to seal and convert over 1M wells to drastically increase the pace of clean up and reduce methane emissions to create 132GWh of highly flexible, low-cost energy storage.