SGT5-9000HL: The world’s most powerful gas turbine

Tested technologies for higher efficiency and performance

To achieve top performance and efficiency levels, the HL-class turbines are operating at highest combustion temperatures with an advanced combustion system.An innovative multi-layer thermal barrier coating and super-efficient internal cooling features are protecting turbine blades and vanes while reducing the need of cooling air.Additionally, advanced 3D blading leads to higher aero efficiency in the compressor.  A free-standing, internally cooled turbine blade 4 reduces exhaust losses and allows for higher exhaust temperatures to enhance the water-steam cycle.

Plug-and-Play power core

Siemens Energy has re-invented the methodology for plant construction with a modular Power Core™.The Power Core™ consists of prefabricated Siemens Energy Solution Blocks and prefabricated pipe racks. These plug-and-play blocks are fabricated and tested in a controlled manufacturing environment and delivered to site as large modules which can be lifted into place for assembly. This results in increased safety on site, accelerated schedules, less dependence on the availability of skilled local labor and in the end lower project risk. HL-class power plants are based on one or more HL-class gas turbines and can achieve more than 64% efficiency in combind cycle operation:

SCC5-9000HL 1x1: 880 MW
SCC5-9000HL 2x1: 1,760 MW

Designed for low maintenance costs and short outage times

 All components are designed with high focus on optimized LCOE, highest availability and serviceability. Several service features are supporting this.

• All rotating blades replaceable without rotor lift/rotor de-stacking
• Easy rotor de-stacking on site due to disc assembly with Hirth serration and central tie rod
• All turbine vanes and blades replaceable without rotor lift; vane 1, blades 1 & 4 replaceable without cover lift

Tremendous service fleet experience and continuous development result in a competitive service concept with 33,000 Equivalent Base Hours (EBH) / 1,250 Equivalent Starts (ES). 
We offer Long Term Programs (LTP), overhaul services, field service, spare parts, reconditioning of components and modernization upgrades. Whether scheduled service or short-term support, our specialists are there for you, on-site all over the world. 

Fuel flexibility matters

The SGT6-9000HL runs on natural gas, LNG, distillate oil, or other fuels. The engine is equipped with DLE burners and has the capability to burn up to 50 vol% of hydrogen (H₂).

Designed to fullfil environmental requirements

While reaching highest levels of performance and efficiency, the HL-class is still complying with NOx and CO regulations.
NOx emissions: Down to 2 ppmvd (with SCR), or ≤25 ppmvd (without SCR).