They include four utilizing lithium-ion batteries, two with zinc/air and one with flywheel technology, which uses kinetic energy to store energy and later supply it to the grid.
The state requires that investor-owned utilities procure 1.325GW of storage for energy from solar, wind and other sources by 2020. PG&E’s share is 580MW.
Storage is expected to play an increasingly important role for utilities as they work to achieve the state’s ambitious clean energy goals.
