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Simple cycle power generation (ISO) 0 MW(e)
Combined cycle efficiency: 61%
Outstanding performance and efficiency
The SGT6-8000H was the very first air-cooled H-class gas turbine on the 60 Hz market and has since demonstrated its high operational flexibility and low lifecycle costs. About 500,000 fired hours of operational experience make it the most reliable and tested H-class gas turbine technology available today. With a power output of 310 MW in simple cycle, or 460 MW in combined cycle operation, and a combined cycle efficiency of 61%, it is among the most efficient and powerful gas turbines in commercial operation.
In combined cycle operation, the SGT6-8000H gas turbine provides a power output of 460 MW and an efficiency of 61%. Its internal cooling air passages from compressor to turbine section ensure fast thermal response of the rotor in case of high load transients and fast cold starts. A gas turbine designed for short start-up times and high operational flexibility.
The SGT6-8000H can be easily integrated in single-shaft (SCC6-8000H 1S) or multi-shaft (SCC6-8000H 1x1, 2x1, or 3x1) combined cycle plants.
Our proven and validated package and plant concepts use standardization, preassembly and prepackaging to minimize field assembly and the need for piping fabrication during construction. This results in easy turbine installation and a shorter project duration.
The blade design is based on proven materials and manufacturing processes, while incorporating latest aerodynamic technologies. Your benefit: high efficiency and reliability, as well as low outage risk.
Moderate firing temperatures allow the use of proven materials to boost reliability and keep maintenance low.
Additionally, the SGT6-8000H has been optimized for short outages: Thanks to the Hirth-serrated rotor disk assembly and central tie rod, rotor maintenance and de-stacking can be done onsite. The turbine blades 1 and 4, and vane 1 can be removed without lifting the cover for quick and easy maintenance.
The gas turbine is capable of world-class fast cold starts and hot restarts due to the light and stiff rotor with internal cooling air passages, the advanced can annular combustion system and Hydraulic Clearance Optimization (HCO) active clearance control. You can achieve combined cycle base load within 30 min for hot starts.
Four stages of fast-acting variable-pitch guide vanes (VGV) will grant you optimized performance over a wide range of operating conditions, improved part load efficiency, low part load emissions, and high load transients.
More than 45 Siemens H-class gas turbines are in commercial operation, with about 500,000 fired hours.
Overall, more than 80 H-class turbines are under contract.
The rotor is based on self-centering and -aligning discs with Hirth serration and central tie rod, providing you with the advantage of on-site rotor maintenance.
The advanced can annular combustion system creates a uniform temperature profile at the turbine entry, ensuring a high fuel flexibility and reliability of your gas turbine. Moderate firing temperatures allow the use of proven materials that improve reliability while reducing maintenance, leading to excellent availability.
The SGT6-8000H package solution consists of the core turbine, an SGen6-100A generator (or optionally, an SGen6-2000H generator), and auxiliary systems.
We offer you a standardized basic design with options geared to your specific requirements, as well as flexible solutions for short installation times and economic power generation. By grouping subsystems and installing them in separate auxiliary packages, we strive to minimize field assembly.
The gas turbine generator packages have a compact footprint designed for limited space requirements.
Combined cycle power plants based on the SGT6-8000H (plant name: SCC6-8000H) are profitable solutions for competitive energy markets with fluctuating power demand. Featuring a fast-start capability, it will achieve combined cycle base load within 30 min for hot start (start-up gradient: 30 MW/min). High load gradients allow for fast load changes. With excellent peaking capabilities, and a high part load efficiency with emission compliance down to lower part load, the SGT6-8000H plants strike an optimal balance between capital costs, performance, and operational considerations.
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.
The SGT6-8000H generator package is optimized for short outages. On-site rotor maintenance, including rotor de-stacking and balancing, eliminates the need for a spare rotor as well as transport costs for workshop maintenance. All compressor blades are replaceable without rotor de-stack or lift.
The SGT6-8000H gas turbines are capable of firing a wide range of fuel gas, and fuel oil; as well as a wide range of non-standard fuels like LNG, syngas, low-calorific gases (low-BTU gases), naphta, condensate and others.
The SGT6-8000H gas turbine uses the can annular combustion system to successfully run in base and part-load operation while still complying with NOX and CO regulations.
NOX emissions: ≤ 25 ppmvd on fuel gas (without water injection, at 15%O2)
NOX emissions: ≤ 42 ppmvd on fuel oil (with water injection, at 15%O2)
|Fuel (examples)||Natural gas, LNG, sour gases, distillate oil, biodiesel, Arabian Super Light crude oil (ASL), kerosene, jet fuel, condensate. Other fuels on request|
|Gross efficiency||> 40%|
|Heat rate||< 9,000 kJ/kWh (< 8,530 Btu/kWh)|
|Turbine speed||3,600 rpm|
|Pressure ratio||20.0 : 1|
|Exhaust mass flow||650 kg/s (1,433 lb/s)|
|Exhaust temperature||645°C (1,193°F)|
|NOₓ emissions||≤ 25 ppmvd at 15% O₂ on fuel gas (without water injection for NOₓ control), ≤ 42 ppmvd at 15% O₂ on fuel oil (with water injection for NOₓ control)|
NOₓ emissions at 15% O₂ at ISO ambient conditions.
Siemens combined cycle power plant
SCC6-8000H 1S / 1x1
|Net plant power output||460 MW||930 MW||1,390 MW|
|Net plant efficiency||61%||61%||61%|
|Net heat rate||5,920 kJ/kWh (5,611 Btu/kWh)||5,910 kJ/kWh (5,602 Btu/kWh)||5,910 kJ/kWh (5,602 Btu/kWh)|
|Number of gas turbines||1||2||3|
Downloads and support
In our download section, you can find brochures, technical papers, and more. Or you can contact us directly for specific inquiries.
(Charges depending on provider)
(From the German fixed network € 0.14/min.
and from the German mobile phone networks
max. € 0.42/min.)
More than 45 Siemens H-class turbines in commercial operation, with about 500,000 fired fleet hours. Overall, more than 80 units are under contract.
Customer: Panda Power Funds
Power output: 829 MW
Efficiency: > 60%
Scope: 2 x SCC6-8000H 1S with 2 x SGT6-8000H gas turbines, 2 x SST6-5000 steam turbines, 2 x SGen6-2000H generators, 2 x HRSG, and SPPA-T3000 I&C system
Customer: POSCO E&C
Power output: 834 MW(e)
Efficiency: > 60%
Scope: SCC6-8000H with 2 x SGT6-8000H gas turbines, 1 x SST6-5000 steam turbine, 3 x SGen6-2000H generators, 2 x BENSON® HRSG, and SPPA-T3000 I&C system
Customer: Korea Southern Power Co.
Power output: 417 MW
Efficiency: > 60%
Scope: SCC6-8000H 1S with 1 x SGT6-8000H gas turbine, 1 x SST6-5000 steam turbine, 1 x SGen6-2000H generator, 1 x BENSON® HRSG, and SPPA-T3000 I&C system
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