FuelCell Energy's challenge is scaling, not demand, and scaling can be lumpy and more cash-heavy than estimated. Fuel cells are well placed, with Bloom accelerating and queued data centers favoring behind-the-meter power, but battery makers struggled to scale despite huge demand. It is unclear whether the recent raise fully funds capacity plans or leaves enough cushion to survive setbacks without more cash, and that margin of safety drives the valuation. x.comÂ