First Solar Plunges as Enphase Earnings Reveal 'Tax Credit Cliff' for U.S. Demand

The Enphase Contagion

First Solar’s decline to $187.43 is being driven by a wave of selling across the renewable energy sector, triggered by Enphase Energy’s (ENPH) first-quarter financial results released late yesterday. Enphase reported a staggering 21% year-over-year decline in revenue, but the most damaging data point for the industry was the 48% sequential crash in U.S. sell-through rates.

While First Solar operates primarily in the utility-scale market—a different segment than Enphase’s residential focus—the sheer magnitude of the demand destruction in the U.S. market has investors recalibrating risk across the entire solar landscape. The broader market is largely ignoring a minor 0.30% dip in the S&P 500, focusing instead on the specific policy headwinds now visible in the solar sector's hard data.

The Section 25D "Tax Credit Cliff"

The primary catalyst for the industry-wide weakness is the expiration of the federal residential clean energy tax credit under Section 25D. This policy shift has created what analysts are calling a "demand trough" for 2026. According to industry reports, the expiration has led to a significant "cost shock" for consumers and developers alike, with 44% of potential adopters citing higher-than-expected costs as a barrier to new projects.

For First Solar, which has positioned itself as the premier American-made alternative to Chinese silicon modules, the policy uncertainty is particularly painful. Despite the company’s massive backlog and its status as a primary beneficiary of the Inflation Reduction Act (IRA), the market is currently prioritizing the immediate reality of slowing domestic deployment over long-term contract strength.

Pre-Earnings Anxiety and Analyst Caution

Today’s move is exacerbated by the fact that First Solar is scheduled to report its own Q1 2026 earnings tomorrow, April 30, after the market close. Analysts are currently forecasting earnings of $2.90 per share on revenue of $1.05 billion. However, sentiment has soured significantly in the lead-up to the report; over the last three months, First Solar has seen 12 downward revenue revisions and zero upward revisions.

Wall Street firms, including Jefferies and Evercore, have recently lowered their price targets for FSLR, citing logistics inflation and the broader "policy vacuum" as near-term threats. While some analysts, such as those at Seeking Alpha, suggest that rising fossil fuel prices and the massive energy needs of AI data centers could provide a floor for utility-scale solar demand, that long-term thesis is being overshadowed today by the immediate fallout from the Enphase report.

Forward Outlook

As the market looks toward tomorrow's earnings call, the focus will be squarely on CEO Mark Widmar’s commentary regarding the 2026 outlook. Investors will be searching for evidence that First Solar’s utility-scale backlog is insulated from the residential weakness seen at Enphase. If the company can demonstrate stable manufacturing utilization and provide a robust defense of its 2026 guidance, today’s 4.31% drop may be viewed as an overreaction. However, if First Solar echoes the cautious tone of its peers, the stock could face further technical pressure as it tests key support levels near the $180 mark.