FERC: For two years straight, solar leads new US
Solar delivered two-thirds of the new US power capacity in August, marking two years in which it led every month across all energy sources.
Solar accounted for 58% of all new electricity-generating capacity added to the US grid through the third quarter of 2025, with more than 30 GW installed. Solar and storage, combined, accounted for 85% of new capacity in this timeframe. The US added 4.7 GW of solar module manufacturing capacity in Q3, bringing the total to 60.1 GW.
Including that additional solar capacity would bring the share provided by solar + wind to more than a quarter of the US total. With the inclusion of hydropower (7.59%), biomass (1.06%), and geothermal (0.31%), renewables account for a 32.40% share of total US utility-scale generating capacity.
In the topsy-turvy world of US energy policy, solar power has been pushed aside while other renewables — namely hydropower, biomass, and geothermal — have earned the support of President Donald Trump's “American Energy Dominance” program. That's just plain weird.
Taken together, wind and solar make up 23.44% of the US's total available installed utility-scale generating capacity. Moreover, almost 29% of US solar capacity is in the form of small-scale (e.g., rooftop) systems that are not reflected in FERC's data.
Solar delivered two-thirds of the new US power capacity in August, marking two years in which it led every month across all energy sources.
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Solar accounted for 58% of all new electricity-generating capacity added to the US grid through the third quarter of 2025, with more than 30 GW installed. Solar and storage, combined,
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