Clean energy exchange-traded funds, including TAN, PBW, and ICLN, are leading the 2026 market rally as surging AI-driven power demand and domestic manufacturing growth revitalize the renewable energy sector.

Key Points

• The Invesco Solar ETF (TAN), Invesco WilderHill Clean Energy ETF (PBW), and iShares Global Clean Energy ETF (ICLN) have posted year-to-date gains between 27% and 31%.
• Rising electricity consumption from AI data centers is driving demand for solar and storage as the marginal power supply.
• First Solar is expanding its U.S. manufacturing footprint to over 14 gigawatts of annual capacity by 2026, bolstered by existing tariff protections.
• Solar energy remains the cheapest new bulk power source, with BloombergNEF estimating a levelized cost of approximately $39 per megawatt-hour in 2025.
• The Federal Reserve’s stable interest rate environment has improved the valuation math for long-duration renewable energy assets compared to the 2022–2024 period.

Why it Matters

This rally signals a shift from speculative, subsidy-driven growth to a structural bull market underpinned by essential utility-scale power requirements. Investors now have clearer options to gain exposure through diversified global funds, concentrated solar pure-plays, or high-beta small-cap baskets depending on their risk tolerance.