US Battery Storage Projects Face Years-Long Grid Connection Delays
Falling costs have spurred a surge in grid-scale battery storage proposals across the US, but aging grid infrastructure and equipment shortages are causing massive backlogs. Roughly 750 gigawatts of storage capacity are now waiting for interconnection approval, with median wait times rising from about 1.5 years in 2015 to 5 years in 2025. Utilities like Con Edison and PG&E report project queues swelling by hundreds of percent, citing shortages of transformers, breakers and skilled labor.