Stock Market Week 09/26: RENIXX Hits New Yearly High - Nordex With Strong Performance - US Solar Stocks Under Pressure: Sunrun, Array Technologies, First Solar and Canadian Solar Post Double-Digit Losses

Why It Matters

The divergence highlights wind’s accelerating profitability versus solar’s valuation pressure, shaping capital allocation in the renewable sector. Investors watch guidance gaps as they signal future earnings volatility.

Key Takeaways

• RENIXX reaches 1,288.68 points, then stalls sideways.
• Nordex revenue hits €7.6 bn, shares rise 26%.
• Sunrun, Array, First Solar tumble over guidance gaps.
• Vestas lands 1.38 GW offshore contract with RWE.
• Ormat revenue up double digits, yet shares fall 10.7%.

Pulse Analysis

The RENIXX renewable‑energy index closed the week at a fresh yearly high of 1,288.68 points, but the rally quickly gave way to a classic sideways pattern. Technical analysis shows the index hovering between the 1,000‑1,100 support band and the 1,280‑1,300 resistance corridor, with the 748‑point low from early 2025 still acting as a psychological floor. While the year‑to‑date gain of roughly 8 % keeps the index in positive territory, the lack of a decisive breakout suggests that market participants remain cautious, awaiting clearer earnings signals from the sector’s heavyweights.

Wind‑energy stocks delivered the week’s strongest returns, led by Nordex’s 26 % surge after it posted €7.6 billion in 2025 revenue, an EBITDA margin of 8.4 % and a record €9.3 billion order book. The company’s forward guidance of €8.2‑9.0 billion revenue and 8‑11 % EBITDA margin reinforces confidence in its growth trajectory. Vestas added momentum with a 1.38 GW offshore order from RWE, confirming demand for high‑capacity turbines in Europe. Even Ormat, despite a dip in GAAP profit, posted double‑digit revenue growth, underscoring wind and geothermal’s resilience amid broader market volatility.

Solar‑focused firms faced a stark contrast, with Sunrun, Array Technologies, First Solar and Canadian Solar each slipping double‑digit percentages despite solid top‑line growth. Sunrun’s revenue jumped 45 % and turned a net loss into a €449 million profit, yet its stock fell 35 % after a cautious 2026 outlook. First Solar and Array posted impressive sales gains but warned that analyst consensus expectations exceed their guidance, triggering sell‑offs. The episode highlights a growing gap between earnings forecasts and market expectations, prompting investors to scrutinize guidance quality as the sector navigates pricing pressure and policy uncertainty.