Storing solar energy underground for a cloudy day: US electrical grid can't affordably store enough standby electricity to keep the system stable, says researcher READ MORE

Storing solar energy underground for a cloudy day: US electrical grid can't affordably store enough standby electricity to keep the system stable, says researcher: A common criticism of a total transition to wind, water and solar power is that the US electrical grid can't affordably store enough standby electricity to keep the system stable. Now a researcher proposes an underground solution to that problem.