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US solar can now power 50M homes β and red states led the boom
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- DeepHorus
The United States has reached a significant solar energy milestone, now boasting enough installed capacity to generate clean electricity for over 50 million homes. This figure, achieved in the second quarter of 2026, represents more than one-third of all American households, though it is an industry calculation based on the solar fleet's total output relative to an average home's consumption.
The milestone follows a strong second quarter, during which the industry installed 11.4 gigawatts of new solar capacity, according to the US Solar Market Insight report from the Solar Energy Industries Association (SEIA) and Wood Mackenzie. This represents a 45% increase year-over-year and a 43% jump from the previous quarter.
Utility-scale solar farms were the primary driver, contributing 9.6 GW of the new capacity. This surge was partly motivated by developers accelerating projects to meet a July 2026 safe harbor deadline for federal tax credits. In the first half of 2026, solar and battery storage accounted for a combined 70% of all new US power capacity added.
The growth is occurring despite the expiration of federal residential solar incentives and political opposition. In a notable trend, states that voted for Donald Trump in 2024 accounted for 71% of all solar capacity installed in the first half of 2026. Eight of the top ten states for new installations are also Republican-leaning.
Industry leaders highlight the sector's scaling importance. "Solar and storage have grown to a scale most Americans have yet to fully realize," stated SEIA CEO Tim Pawlenty, emphasizing their necessity for meeting the nation's rising energy demands.
Looking ahead, Wood Mackenzie projects the US will add approximately 44 GW of solar capacity annually through 2031. This trajectory could nearly double the country's total solar capacity within the next five years, despite challenges such as permitting and the post-tax credit transition.
The outlook for residential rooftop solar is more cautious. After a federal 30% tax credit expired at the end of 2025, growth slowed. However, analysts expect a resumption of residential solar and storage installations in 2027, as homeowners continue seeking ways to lower electricity bills and enhance resilience during outages.
