US energy technology firm Babcock & Wilcox (B&W) has signed a new agreement with Siemens Energy to commence work on 20 steam turbine-generator sets totaling 1GW of capacity, to be used in B&W's FastPower program for data center customers.

The order is separate from a deal signed between the two companies earlier this year to supply Applied Digital’s data center campuses with natural gas generation, which covers 300MW of capacity.

B&W did not name the customer for the new 1GW order. DCD has reached out for further information.

"As demand for dependable, large-scale power generation continues to accelerate, particularly from AI data center customers, we are strengthening our collaboration with Siemens Energy through this agreement," said Brandy Johnson, chief technology officer at B&W. "This order secures 1GW of capacity and further positions us to deliver reliable, high-capacity energy solutions on the accelerated timelines our customers require."

B&W's FastPower program combines its boiler and generation technologies with Siemens Energy's turbines to provide data center operators a faster alternative to conventional simple- or combined-cycle gas plants.

"Siemens Energy's agreement with Babcock & Wilcox to commence work on these steam turbine generator sets reflects a broader trend we are currently seeing in the U.S. market: growing demand for reliable, affordable, and resilient energy infrastructure," said Tobias Panse, senior vice president of steam turbines and generators at Siemens Energy.

Several major turbine and generator manufacturers have signed large-scale deals with data centers in the US. Notable recent deals include Finnish engine manufacturer Wärtsilä, which signed two data center supply deals in Texas and Ohio in April, and Hyundai Heavy Industries, which signed a 1GW deal to supply a data center in the US earlier this month.