FuelCell Energy (FCEL) shares experienced a sharp sell-off on Friday, dropping 19.02% to close at $17.33, ahead of the company's fiscal second-quarter earnings report due Monday. The decline marked the third consecutive session of losses for the stock, which fell even as the broader Nasdaq Composite slid 4.18%.
The timing of the plunge appears counterintuitive given the stock's impressive 137% gain so far in 2026, driven by enthusiasm for companies tied to artificial intelligence data-center energy demand. However, the upcoming earnings report will serve as a critical test of whether that narrative is backed by tangible results.
According to analysts surveyed by FactSet, FuelCell is expected to report a fiscal Q2 loss of $0.52 per share on revenue of $40.5 million. While the headline numbers are important, investors are likely to focus on the company's backlog, cash burn rate, and any evidence that its pipeline of AI-related projects is converting into firm orders and revenue.
FuelCell manufactures fuel-cell systems that convert hydrogen or other fuels into electricity without combustion. The appeal for data-center operators is clear: on-site power generation that remains operational even when grid power is unreliable or unavailable. CEO Jason Few has described AI data centers as the "defining opportunity of the AI era," but the company's financials have yet to fully reflect that potential.
In the fiscal first quarter, FuelCell's revenue jumped 61% year over year to $30.5 million, but its backlog declined 10.8% to $1.17 billion, and the company continued to post losses. To strengthen its pitch, FuelCell in March introduced a standardized 12.5-megawatt power block for data centers and announced plans to expand its Torrington, Connecticut, facility from 100 megawatts to 350 megawatts. Few emphasized that data centers need power "as quickly as they can get it," while Senior Vice President Eric Strayer noted customers are seeking "fast, phased deployment."
Index-related developments could also influence the stock. FTSE Russell recently added FuelCell to its preliminary list for the Russell 3000 Index, with the reconstituted indexes set to take effect after the U.S. market closes on June 26. While index-tracking funds may eventually buy shares, such flows do not directly impact the company's operational performance or order book.
Bloom Energy remains the key competitor in this space. The Wall Street Journal reported last week that Bloom's fuel-cell orders for AI-linked data centers have helped it move from small-cap to a larger Russell index category. Meanwhile, Plug Power continues to be watched as a clean-hydrogen play, but FuelCell's near-term momentum hinges on data-center adoption rather than broader sector trends.
The risks are significant. A soft revenue number, sluggish bookings, or another decline in backlog would raise questions about the validity of the AI demand thesis. Investors are also closely monitoring cash burn; while losses in a growth-stage project business are not unusual, the company needs new deals to begin catching up with revenue.
Monday's report will not determine whether FuelCell is part of the data-center story—that much is already clear. Instead, traders want specifics on the scale of demand, the timeline for revenue realization, and whether Friday's sell-off was merely a reset or a sign that the market is ready to scrutinize the numbers more closely.
