East County News Service

April 4, 2026 (Escondido) -- The developer of the Seguro Battery Energy Storage System has formally withdrawn its application to build one of the world’s largest lithium-ion storage facilities in the hills of North San Diego County.

The decision, confirmed earlier this week, marks the end of a three-year battle between developer AES Corporation and the unincorporated communities of Eden Valley, Harmony Grove and Elfin Forest.