Siemens and FuelCell Energy sign MoU to develop 100MW+ distributed fuel cell systems for data center power supply.
On July 9, Siemens and FuelCell Energy announced a memorandum of understanding to jointly develop distributed fuel cell power generation systems for data centers and other industrial facilities. Under the non-binding agreement, Siemens will design and supply electrical balance-of-plant (EBOP) systems for fuel cell installations exceeding 100MW, integrating battery energy storage, microgrid controls, and medium-voltage electrical equipment alongside FuelCell Energy's carbonate fuel cell modules.
The collaboration targets a recognized market opportunity: data center operators seeking dispatchable, on-site baseload power in markets where grid interconnection queues and transmission congestion have extended deployment timelines. FuelCell Energy's modular systems—available in 1.25MW, 2.5MW, and 12.5MW configurations—can be combined for utility-scale installations.
FuelCell Energy shares closed at $21.03 on July 11, down 8.6% for the day but up approximately 188% year-to-date, as the market has revalued the company's pivot toward data center power. The company's market capitalization stands at approximately $1.1 billion.
The MoU establishes a framework for joint project development, engineering, and integration of distributed energy systems combining fuel cell generation with Siemens' electrical infrastructure. Siemens will contribute expertise in EBOP design—switchgear, transformers, protection systems, and grid interconnection—while FuelCell Energy provides the generation assets. No financial terms were disclosed, and the agreement remains non-binding. The companies outlined a pathway from pilot projects to full-scale commercial deployments, though no specific timeline or initial project was announced.
The Siemens partnership represents FuelCell Energy's latest effort to establish itself as an on-site power provider for AI infrastructure. In March 2026, the company unveiled a standardized 12.5MW packaged power block—comprising ten 1.25MW modules or five 2.5MW systems with shared balance-of-plant—designed to accelerate data center deployment in power-constrained markets. The company's business development pipeline has surged 275% since February 2025, with data center customers driving the majority of new interest. CEO Jason Few has cited grid congestion and interconnection backlogs as the primary demand drivers.
On June 24, FuelCell Energy signed its largest deal to date: a binding capital equipment purchase agreement with Fit Energy USA for up to 380MW of carbonate fuel cell systems, structured in four phases beginning with a 30MW commitment and delivery starting later this year, followed by optional tranches of 100MW, 125MW, and 125MW.
To meet rising demand, FuelCell Energy is expanding production capacity at its Torrington, Connecticut manufacturing facility from approximately 100MW to 350MW annually—more than tripling current output. The company is investing in long-lead equipment and plans to pursue a hub-and-spoke manufacturing model similar to its existing operations in South Korea and Germany. This expansion is critical to the Siemens MoU: delivering 100MW+ integrated projects requires engineering integration and reliable supply of fuel cell modules at scale. FuelCell Energy's current backlog, including the 380MW Fit Energy agreement, already exceeds its present manufacturing capacity.
For Siemens, the partnership extends its Smart Infrastructure division's strategic push into distributed energy for data centers. The company's electrical infrastructure is already deployed across conventional data center builds. The MoU positions Siemens as the EBOP integrator for a generation technology that sits behind the meter, bypassing grid interconnection constraints.
Fuel cells remain a niche technology in data center power supply, but interest has accelerated as grid constraints push operators toward behind-the-meter alternatives. Carbonate fuel cells operate on natural gas and produce baseload power with lower air emissions than diesel or gas turbines, while generating usable waste heat that can offset supplemental cooling loads. FuelCell Energy faces competition from Bloom Energy, which has secured multiple data center fuel cell deployments, and from hyperscalers exploring fuel cells as bridge power during grid interconnection delays. The Siemens MoU signals that established electrical infrastructure providers view fuel cells as commercially viable distributed generation, not merely demonstration technology.