Top Solar Stocks to Monitor Despite Regulatory Challenges and Tariff Concerns

The U.S. solar industry is facing new challenges following the enactment of the One Big Beautiful Bill Act in July 2025, which reduces tax credits from the Inflation Reduction Act and establishes new Foreign Entity of Concern requirements, complicating procurement and introducing policy uncertainty. Despite these hurdles, the U.S. Energy Information Administration (EIA) projects a significant growth trajectory for solar power, anticipating solar’s share of U.S. electricity generation to reach 8% by 2026 and 9% by 2027. The Solar Energy Industries Association (SEIA) foresees nearly 44 GWdc of solar capacity installations in 2026, with annual additions stabilizing at 38-39 GWdc between 2027 and 2030.

The industry’s resilience is underlined by recent performance, with solar stocks collectively rising 40.4% over the past year, outperforming both the Oils-Energy sector (34.6% rise) and the Zacks S&P 500 (19.4% rise). However, the industry currently holds a Zacks Industry Rank of #143, indicating it is in the bottom 41% of over 243 ranked industries. Analysts have downgraded their earnings estimates for solar companies by 12.4% to $1.70 for the current fiscal year, suggesting mixed prospects despite robust long-term demand forecasts.

Key companies to monitor include Sunrun, Canadian Solar, and Tigo Energy. As of early 2026, Sunrun reported a 71% storage attachment rate in Q4, with over 237,000 installed systems; Canadian Solar’s earnings per share are estimated to rise 25.2% year-over-year; and Tigo Energy anticipates a 28% increase in sales in 2026. Collectively, these firms reflect the broader trends and potential resilience of the solar sector despite interim challenges.