New analysis from the Solar Energy Industries Association (SEIA) shows a dramatic shift in the U.S. solar energy landscape, with Republican-led states emerging as major hubs for both solar deployment and manufacturing investment.
A decade ago, California alone accounted for nearly half of the nation’s total solar energy capacity. Today, thanks to falling costs and rapid development timelines, solar power is fueling economic growth across a broad range of states—particularly those seeking to attract new energy-intensive industries such as artificial intelligence and advanced manufacturing.
SEIA’s findings highlight that 80 percent of solar manufacturing investments announced since August 2022 have gone to congressional districts represented by Republicans. Additionally, of the 20 states that installed the most solar capacity in 2024, 14 supported President Trump in the last election. These states now collectively host more installed solar capacity than those that voted for former Vice President Harris.
The data reflects solar energy’s evolution from a regional trend to a national economic engine, driving job creation, manufacturing growth, and energy security in communities across the political spectrum. The standout states include Texas, Florida, Georgia and Arkansas.
