Turbomachinery News Network: Turboden, Ansaldo Energia, Siemens Energy, and more

Welcome to the seventeenth edition of the Turbomachinery News Network. I’m James Cook, associate editor at Turbomachinery International.

Turboden America obtained a Phase II award for Fervo Energy’s Cape Station geothermal project in Utah. Turboden will deliver equipment for three 60-MWe Organic Rankine Cycle units, totaling 180 MW of clean dispatchable power. With an additional three Gen-2 units, Turboden’s technology will generate 300 MWe of power at the Cape Station site, forming one of the largest geothermal installations globally.

Siemens Energy will deliver 10 large-scale gas turbines and associated generation equipment to support Xcel Energy’s two newbuild power plants, reinforcing grid reliability in its Southwest service territory. The new facilities will add 2,088 MW of dispatchable generation capacity, providing flexible on-demand power during peak usage and turbulent market conditions.

Ansaldo Energia completed upgrades at Alpiq’s San Severo combined-cycle power plant, including modifications to the gas turbine, steam turbine, and generator. The project, completed within the agreed-upon timeframe, improved operational flexibility and allowed the plant to operate with up to 25% hydrogen. Prior to the upgrades, the company anticipated a 43-MW power increase, 0.9% efficiency improvement, and a reduction of over 10,000 tons of CO₂ emissions per year.

MITSUI E&S and Everllence unveiled the first TCT turbocharger to be produced under license domestically—the TCT40 axial turbocharger. In 2022, MITSUI agreed to build Everllence’s TCT axial-turbocharger series to replace older turbocharger models for two-stroke engines. The TCT40 features a newly developed radial compressor and axial turbine tested with the latest simulation technologies, establishing a compact and lightweight turbocharger design.

Beginning in 2026, Rolls-Royce will launch an updated mtu Series 20V4000 L64 engine for the 60-Hz market. With a new fast-start capability, the genset will deliver 2.8 MW in 45 seconds to power data centers and stabilize the grid. Compared to the previous model, performance has been increased by 10% and the genset does not require a gearbox, allowing data center operators to achieve notable space savings. Rolls-Royce’s fast-start engines can supply emergency power in data centers, but also continuous power in combination with diesel models.