Heat Wave Lifts Power Prices, Pressures Solar Stocks

Investors are already signaling the shift in the renewable-energy complex. First Solar’s shares have whipsawed from $184.70 on March 30 to $284.59 on Dec. 22 before sliding to $206.05 on July 21, while its RSI reading of 26.4 points to technically oversold conditions after the recent selloff. Enphase Energy has also retreated to $39.94 from $72.33 in early June, with an RSI of 28.7, as traders reassess near-term earnings sensitivity across the solar chain.

For developers and equipment makers, higher power prices can be a double-edged sword. They improve the case for solar and storage over time, but short-term volatility also reflects the limits of generation that depends on weather, exposing the market to sharp swings in output and pricing.

The broader backdrop is supportive for dollar assets and volatile for risk appetite, with Adalytica’s U.S. dollar trade signal showing greed at 79 and the S&P 500 signal staying neutral. The next catalyst is whether the heat persists long enough to keep electricity prices elevated and force analysts to reprice European power demand, utility margins and renewable-energy equities.