Since early 2026, energy equities have climbed steadily, buoyed by rising oil and gas prices from Middle East conflicts, while the artificial intelligence (AI) trade has also displayed strong momentum. Yet, away from the spotlight, several green energy companies in the sustainability sector have quietly outpaced many of their popular peers.
Data reveals that fuel cell manufacturer Bloom Energy (NYSE: BE) has surged over 223% year-to-date, leading all its industry counterparts. Its competitor, FuelCell Energy (NASDAQ: FCEL), has also posted triple-digit gains this year, with both firms benefiting from AI-driven electricity demand growth.
Notably, Bloom Energy has secured a series of major contracts in 2026. In April, the company inked a framework agreement with Oracle (NYSE: ORCL) to supply up to 2.8 gigawatts of fuel cells. It also expanded its partnership with alternative asset management giant Brookfield (NYSE: BAM), which is scaling up its AI business footprint, from $5 billion to $25 billion. Additionally, Bloom Energy signed a 20-year power purchase agreement valued at $2.65 billion with American Electric Power (NASDAQ: AEP), under which it will build and operate a fuel cell power facility in Wyoming to provide long-term electricity supply. In July, the company announced a $1.7 billion project investment to deliver dedicated power solutions for AI cloud computing firm Nebius (NASDAQ: NBIS).
Meanwhile, FuelCell Energy has reached a 380-megawatt data center power supply agreement with Fit Energy USA LP this year and also secured a capacity reservation deal with a major data center operator for a Texas project.
In parallel, Vicor Corporation (NASDAQ: VICR), a high-performance power module manufacturer, has climbed more than 97% year-to-date. The company designs and produces modular power components and systems, efficiently converting and delivering electricity for high-performance electronic devices. Enlight Renewable Energy (NASDAQ: ENLT), which develops and operates utility-scale solar, wind, and energy storage projects across multiple markets, is up roughly 58% this year. Advanced materials company Aspen Aerogels (NYSE: ASPN) has gained over 81% year-to-date, specializing in high-performance aerogel materials used in electric vehicle battery thermal barriers, energy-efficient insulation, and other energy applications.
These five green stocks have significantly outperformed popular clean energy exchange-traded funds (ETFs). Data shows the iShares Global Clean Energy ETF (NYSEARCA: ICLN) and the First Trust NASDAQ Clean Edge Green Energy Index Fund (NASDAQ: QCLN) have each risen roughly 8% so far this year. The five stocks have also outpaced the S&P 500, Dow Jones Industrial Average, and Nasdaq Composite indices. When compared to the AI sector, Bloom Energy, FuelCell Energy, Vicor Corporation, and Aspen Aerogels have beaten two major chip ETFs, the iShares Semiconductor ETF (NASDAQ: SOXX) and the VanEck Semiconductor ETF (NYSEARCA: SMH), as well as the Global AI and Tech ETF (NYSEARCA: AIQ). While Enlight Renewable Energy underperformed the iShares Semiconductor ETF, it has still surpassed the VanEck Semiconductor ETF and the Global AI and Tech ETF since the start of 2026.
Wall Street analysts generally hold an optimistic outlook on all five stocks. Specifically, the consensus rating for Bloom Energy is "Buy," with an average price target of $280.24, nearly flat against Thursday's closing price. For FuelCell Energy, the consensus rating is "Buy," with an average target of $20.33, implying nearly 15% upside. Vicor Corporation receives a "Strong Buy" consensus and an average target of $386.25, suggesting roughly 79% upside. Enlight Renewable Energy holds a "Buy" consensus with an average target of $87.88, representing about 17% upside. Lastly, Aspen Aerogels has a "Buy" consensus and an average target of $7.75, indicating nearly 51% upside from Thursday's close.