The next generation of advanced air-cooled gas turbines
Our HL-class gas turbines are paving the way to the next level of efficiency and performance.
Our HL-class gas turbines are paving the way to the next level of efficiency and performance. Derived from proven H-class technology in an evolutionary development step, the next generation of advanced air-cooled gas turbines uses a series of new, but already tested technologies like super-efficient internal cooling features for blades or vanes and an advanced combustion system to increase firing temperature.

The result:

A technology carrier to the next level with a combined cycle efficiency beyond 64%, with a midterm goal of even higher efficiencies. The HL-class consists of two engines: The SGT5-9000HL for 50 Hz, and the SGT6-9000HL for 60 Hz.

Efficiency, flexibility and hydrogen capability are key levers in driving the decarbonization of the energy industry – which also makes the HL-class a future-proof gas turbine. Get exclusive insights into HL-technology – close to reality at the Duke Energy’s Lincoln Combustion Turbine Station, a key testing facility for Siemens Energy’s largest HL-class gas turbine and be part of the virtual tour.
Personal reflections after one year of testing: “I would be lying if I said I didn’t hold my breath during that first start-up a year ago. In some ways, it felt like I was holding my breath for five years, building up to that moment. What a thrill it was to see all burners lit up, the first time we tried

Type : gas
Applications : for power generation
Other characteristics : combined-cycle, multi-stage
Rated power kW : 593,000 kW (806,255.35 hp)