US Adds 26.6 GW of Utility-Scale Solar in 2025, FERC Data Shows
The United States installed 26,556 MW of new utility-scale solar capacity in 2025, accounting for the vast majority of the 36,551 MW of total new generating capacity added during the year, according to data from the Federal Energy Regulatory Commission (FERC).
Although the annual total marked a slight decline from the 33.8 GW installed in 2024, solar power continues to be the leading force behind grid expansion. By the end of 2025, solar represented 12.16% of the total available installed generating capacity in the US.
In December alone, developers brought 1,193 MW of new capacity online. This included 17 solar units totaling 993 MW, alongside a single 200 MW wind project.
Key utility-scale project completions during the month included:
· Iron Pine Solar Power LLC’s 325 MW Iron Pine Solar Project in Pine County, Minnesota
· Morrow Lake Solar LLC’s 201.1 MW Morrow Lake Solar & Storage Project in Frio County, Texas
· Top Hat Wind Energy LLC’s 200 MW Top Hat Wind Energy Center in Logan County, Illinois
· CPV Backbone Solar LLC’s 160 MW CPV Backbone Solar Project in Garrett County, Maryland
· Sycamore Creek Solar LLC’s 117 MW Sycamore Creek Solar Project in Crawford County, Ohio
Additional regional contributions included Origis Energy’s 74.9 MW Whistling Duck Solar Project in Florida and Genesee Solar Energy LLC’s 40.8 MW project in Michigan. The latter will supply electricity to Consumers Energy Co. under a long-term power purchase agreement.
As of the end of 2025, total available installed generating capacity in the United States reached 1,353.04 GW, underscoring continued growth across the country’s power generation fleet—with solar firmly at the center of that expansion.
Although the annual total marked a slight decline from the 33.8 GW installed in 2024, solar power continues to be the leading force behind grid expansion. By the end of 2025, solar represented 12.16% of the total available installed generating capacity in the US.
December Sees Nearly 1.2 GW of New Capacity
In December alone, developers brought 1,193 MW of new capacity online. This included 17 solar units totaling 993 MW, alongside a single 200 MW wind project.
Key utility-scale project completions during the month included:
· Iron Pine Solar Power LLC’s 325 MW Iron Pine Solar Project in Pine County, Minnesota
· Morrow Lake Solar LLC’s 201.1 MW Morrow Lake Solar & Storage Project in Frio County, Texas
· Top Hat Wind Energy LLC’s 200 MW Top Hat Wind Energy Center in Logan County, Illinois
· CPV Backbone Solar LLC’s 160 MW CPV Backbone Solar Project in Garrett County, Maryland
· Sycamore Creek Solar LLC’s 117 MW Sycamore Creek Solar Project in Crawford County, Ohio
Additional regional contributions included Origis Energy’s 74.9 MW Whistling Duck Solar Project in Florida and Genesee Solar Energy LLC’s 40.8 MW project in Michigan. The latter will supply electricity to Consumers Energy Co. under a long-term power purchase agreement.
As of the end of 2025, total available installed generating capacity in the United States reached 1,353.04 GW, underscoring continued growth across the country’s power generation fleet—with solar firmly at the center of that expansion.
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