Energy

In the third quarter of 2025, solar projects representing about 20% of planned capacity reported a delay, a decrease from 25% in the same period in 2024, based on data compiled from multiple Preliminary Monthly Electric Generator Inventory reports.

Solar power is the fastest-growing source of new electric generating capacity in the United States, driven by large-scale solar photovoltaic (PV) projects built by electric utilities and independent power producers. Delays in bringing these solar projects into operation have been trending down in recent months.

Despite the relatively high number of projects reporting delays in 2024, that year was a record year for U.S. solar capacity additions. Power plant developers added 31 gigawatts (GW) of utility-scale solar PV generating capacity in 2024, which increased total U.S. utility-scale solar capacity by 34%. Delays in solar project schedules tend to be relatively short in duration, and reports of delays are more common than cancellations: less than 1% of planned solar capacity is entirely cancelled in a typical month.