"Solar has now been the largest source of new generating capacity added each month for 21 consecutive months, starting September 2023."
The 11,518 MW of solar added during the first five months of 2025 was 75.3% of the total new capacity placed into service... Between January and May, new wind provided 2,379 MW of capacity additions, accounting for 15.6% of all new capacity added during the first five months of 2025. For the first five months of 2025, solar and wind comprised 90.9% of new capacity while natural gas (1,381 MW) provided just 9.0%; the remaining 0.1% came from oil (14 MW). Solar + wind are 22.9% of U.S. utility-scale generating capacity.
The installed capacities of solar (11.1%) and wind (11.8%) are now each more than a tenth of the U.S. total. Taken together, they constitute 22.9% of the U.S.'s total available installed utility-scale generating capacity. At least 25-30% of U.S. solar capacity is in the form of small-scale (e.g., rooftop) systems that are not reflected in FERC's data. Including that additional solar capacity would bring the share provided by solar + wind to more than a quarter of the U.S. total. With the inclusion of hydropower (7.7%), biomass (1.1%), and geothermal (0.3%), renewables currently claim a 32.0% share of total US utility-scale generating capacity. If small-scale solar capacity is included, renewables are now about one-third of total US generating capacity....
Taken together, the net new "high probability" capacity additions by all renewable energy sources over the next three years — the bulk of the Trump Administration's remaining time in office — would total 113,097 MW. There is no new nuclear capacity in FERC's three-year forecast, while coal and oil are projected to contract by 24,913 MW and 1,907 MW, respectively... If FERC's current "high probability" additions materialize by May 1, 2028, solar will account for 16.7% of US installed utility-scale generating capacity. Wind would provide an additional 12.7% of the total. Thus, each would be greater than coal (12.2%) and substantially more than nuclear power or hydropower (each 7.2%). In fact, assuming current growth rates continue, the installed capacity of utility-scale solar is likely to surpass that of either coal or wind within two years...
At the end of 2024, the mix of all renewables accounted for 30.96% of total generating capacity. Solar alone was 10.19% while wind was 11.68%. By the end of May, renewables' share had risen to 31.98% with solar at 11.13% and wind at 11.80%.
FERC also says that 43 "units" of solar totaling 1,515 megawatts (MW) were placed into service in May, according to the article, "accounting for 58.7% of all new generating capacity added during the month."
Read more of this story at Slashdot.