Technology group Wärtsilä continues its growth in power supply for data centers and will deliver 27 engines to provide continuous primary power for a new data center under construction in the United States. The onsite power facility will operate with 27 Wärtsilä 50SG flexible engines with a power of 507 MW. The engines will run on natural gas and can be converted to run on sustainable fuels in the future. The equipment will be delivered in 2027. The order was booked in Wärtsilä’s order intake in Q4 2025.
Data centers are essential to the development of today's digital economy, but they demand substantial amounts of power with high requirements on uptime and reliability. Access to consistent and reliable power from the grid is not guaranteed, as conventional supply systems often struggle with capacity constraints, inefficiencies and insufficient stability. Therefore, many data center developers are turning to off-grid power solutions including a primary power source, like an engine power plant, to ensure faster access to reliable power. Wärtsilä’s engines were chosen ahead of other competing technologies for a variety of reasons including their ability to operate at full capacity even in temperatures exceeding 100 degrees Fahrenheit (37.8 degrees Celsius). Wärtsilä is also able to guarantee low plant emissions. This, coupled with the leading fuel efficiency of Wärtsilä engines, allows the customer to reach their sustainability targets.
“The engines will run on natural gas and can be converted to run on sustainable fuels in the future. The equipment will be delivered in 2027. The order was booked in Wärtsilä’s order intake in Q4 2025.”
Notes for context: Wärtsilä positions its engine-based power solutions as reliable primary power for data centers, highlighting performance in high temperatures, potential for emissions reduction, and fuel efficiency as key factors driving adoption amidst grid constraints and the need for uptime.
Author summary: Wärtsilä secures a major US data-center power project, delivering 27 flexible 50SG engines totaling 507 MW, with natural gas operation and future sustainable fuel compatibility, scheduled for delivery in 2027.