SGT-800 industrial gas turbine

Outstanding in cogeneration and combined cycle applications

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    Simple robust design for high reliability and easy maintenance

    Hot climate option available for increased performance at high ambient temperatures

    Excellent fuel flexibility allows for high content of inert gases, hydrogen and heavy hydrocarbons

    Robust dual-fuel dry low emission combustion system for low environmental footprint

    A highly efficient turbine design offering optimal performance and lifetime

    High exhaust energy giving excellent cogeneration / combined cycle characteristics

    Simple cycle power generation (ISO) up to 0 MW(e)

    More than 58.5% net efficiency in combined cycle mode

    A robust industrial gas turbine designed for flexibility


    Making digital real

    With a proven, long-term track record of successful installations around the world, the SGT-800 gas turbine is an excellent choice for both industrial power generation and oil and gas applications. The outstanding performance of the turbine technology of the SGT800 is complemented by our digital service solutions.


    Digitalization creates new possibilities to adopt new data analytics tools in order to remain competitive in a vastly transforming power industry. The SGT800  integrates remote monitoring diagnostics to allow for flexible monitoring and ensure maximum availability and uptime for our customers.


    Learn more about what is digitally possible in power generation, by downloading the presentation below.


    Digital Power Generation Services
    Making Digital Real (download)

    SGT-800 gas turbine highlights

    Whatever the application, the SGT-800 meets your requirements for efficiency, reliability and environmental compatibility. As a result, you can expect lowest lifecycle cost of operation and the best possible return on investment.

    The combustor and burner designs offer world-class emission performance over a wide load range and are capable of single-digit NOₓ and CO emission levels. Low emissions are also achieved with liquid fuel without the need of water injection.

    Designed to reduce environmental impact, the SGT-800 gas turbine will help you meet even the strictest emission regulations worldwide.

    Reliability has been a top priority from day one of the development of the SGT-800. Thanks to simple and robust technical solutions the reported average fleet reliability of the core engine and auxiliary systems over the last five years lies at a world-class 99.5%.

    The SGT-800 offers broad flexibility in fuels, operating conditions, maintenance concepts, package solutions and ratings. These flexible solutions have been developed in order to satisfy your individual market-specific requirements.

    The SGT-800 features a compact, modular, maintenance-friendly design. This maintainability combined with the turbine’s robust single-shaft arrangement, long time between overhauls and long lifetime ensures its high operational availability.
    Flexible service concepts for on-site or off-site maintenance with possibility for 48-hour core engine exchange will maximize the availability even further.

    With its high electrical efficiency the SGT-800 is the core of your power plant installation – from simple cycle to combined cycle operation, with single or multiple units.

    A hot climate option is available to further increase performance at high ambient temperatures.

    Its excellent steam generation capability also makes the SGT-800 an ideal choice in combined heat and power (CHP) installations.



    Ingenious design to the core

    The SGT-800 industrial gas turbine combines a simple robust design for high reliability and easy maintenance with high efficiency and low emissions. The successive evolution of the SGT-800, based on experience of the installed fleet and on proven design solutions, ensures that you will get the optimal performance and lifetime out of your gas turbine.

    Standard options for hot and cold climates are available for operation at extreme ambient temperatures. The hot climate option offers 26% more power and a 5.8% reduction in heat rate at 50 °C.



    Classic or single-lift?

    Two different package solutions are available for increased flexibility in order to meet your individual requirements. Both are available for 50 Hz and 60 Hz markets.



    SGT-800-based power plants

    Flexibility and efficiency are key for your power plant solutions. The excellent efficiency and steam-raising capability of the SGT-800 gas turbine make it outstanding in cogeneration – also called combined heat and power (CHP) –  and combined cycle installations.

    We offer you a broad range of power plant configurations based on one or multiple SGT-800 gas turbines. Within our standard plant configuration we can offer a high degree of scope flexibility. This enables plant optimization to suit your specific requirements, such as island-mode operation or multiple power blocks.



    Flexible maintenance – high availability

    Our comprehensive portfolio of services provides low life cycle cost and optimum performance throughout the turbine’s life cycle: Long Term Programs (LTP), overhaul service, field service, spare parts, service exchange, remote diagnostic service, and modernization and upgrades.


    With up to 60,000 equivalent operating hours (EOHs) between major overhauls the SGT-800 provides high operational availability.
    Whether time-based or cycle-based, we offer flexible standardized maintenance concepts. On-site maintenance or modular overhaul, without the need for special workshop maintenance, is available for both package solutions. For the single-lift package, off-site maintenance with 48-hour core engine exchange is optionally available.


    With its compact and modular setup, the SGT-800 gas turbine is designed for easy maintenance. The vertically split compressor casing enables easy access – a single-blade or a single-vane segment can be exchanged on site. For quick and easy inspections, the burners can be removed without cover lift.



    Fuel flexibility matters

    Whatever you need: The SGT-800 offers gas only, liquid only (Diesel No.2) or dual fuel (gas/liquid) with on-load fuel-changeover capability. The excellent fuel flexibility allows for high content of inert gases, hydrogen and heavy hydrocarbons without any maintenance impact.


    The low gas supply pressure requirement (27–30 bar[a] / 390–435 psi[a]) reduces the need for a gas compressor on site.

    Best-in-class NOₓ and CO emission levels

    All SGT-800 units are equipped with a robust dual-fuel Dry Low Emission (DLE) combustion system to minimize NOₓ and CO emissions. With this gas turbine, capable of single-digit NOₓ and CO emission levels and world-class emission performance over a wide load range, you will comply with both global and regional regulations.

    Technical data

    Technical data for the SGT-800

    Performance data for simple cycle power generation

    Download table as: PDF Excel
    47.5 MW rating
    50.5 MW rating
    54.0 MW rating
    57.0 MW rating
    Power output 47.5 MW(e) 50.5 MW(e) 54.0 MW(e) 57.0 MW(e)
    Fuel* Natural gas, liquid fuel, dual fuel Natural gas, liquid fuel, dual fuel Natural gas, liquid fuel, dual fuel Natural gas, liquid fuel, dual fuel
    Frequency 50/60 Hz 50/60 Hz 50/60 Hz 50/60 Hz
    Gross efficiency 37.7% 38.3% 39.1% 40.1%
    Heat rate 9,547 kJ/kWh 9,389 kJ/kWh 9,206 kJ/kWh 8,970 kJ/kWh
    Turbine speed 6,608 rpm 6,608 rpm 6,608 rpm 6,608 rpm
    Pressure ratio 20.1 : 1 21.0 : 1 21.4 : 1 21.8 : 1
    Exhaust mass flow 132.8 kg/s 134.2 kg/s 135.5 kg/s 136.6 kg/s
    Exhaust gas temperature 541 °C (1,007 °F) 553 °C (1,027 °F) 563 °C (1,045 °F) 565 °C (1,049 °F)
    NOₓ emissions** ≤ 15 ppmvd ≤ 15 ppmvd ≤ 15 – 17 ppmvd ≤ 20 ppmvd

    *Natural gas, other gases within specification, liquid fuel (Diesel No.2) and dual fuel (gas and liquid)

    **NOₓ emissions at 15% O₂ on fuel gas (with DLE)

    All performance values are based on standard design, ISO ambient conditions and natural gas fuel. No intake or exhaust loss.

    SCC-800: Performance data for 1x1 combined cycle power plant

    Download table as: PDF Excel
    47.5 MW rating
    50.5 MW rating
    54.0 MW rating
    57.0 MW rating
    Net plant output 66.6 MW(e) 71.4 MW(e) 75.9 MW(e) 80.7 MW(e)
    Net plant efficiency 53.8% 55.1% 56.0% 58.0%
    Net plant heat rate 6,693 kJ/kWh 6,530 kJ/kWh 6,427 kJ/kWh 6,207 kJ/kWh
    Number of gas turbines 1 1 1 1
    Bottoming cycle type 2PNRH 2PNRH 2PNRH 3PNRH

    SCC-800: Performance data for 2x1 combined cycle power plant

    Download table as: PDF Excel
    47.5 MW rating
    50.5 MW rating
    54.0 MW rating
    57.0 MW rating
    Net plant output 135.4 MW(e) 143.6 MW(e) 153.7 MW(e) 163.1 MW(e)
    Net plant efficiency 54.7% 55.4% 56.7% 58.6%
    Net plant heat rate 6,583 kJ/kWh 6,494 kJ/kWh 6,349 kJ/kWh 6,143 kJ/kWh
    Number of gas turbines 2 2 2 2
    Bottoming cycle type 2PNRH 2PNRH 2PNRH 3PNRH

    The combined cycle plant SCC-800 is available based on one or multiple SGT-800 gas turbines. Combined cycle performance is based on two pressure non-reheat (2PNRH) or three pressure non-reheat (3PNRH) bottoming cycle.

    Physical dimensions and weight*)

    Download table as: PDF Excel
    Classic package
    Single lift package
    Approx. weight 285,000 kg (628,300 lb) 305,000 kg (672,400 lb)
    Length 20.8 m (68 ft) 22.0 m (72 ft)
    Width 7.3 m (24 ft) 4.7 m (16 ft)
    Height 6.6 m (22 ft) 5.3 m (17 ft)

    *) Dimensions depending on configuration. Dimensions exclude inlet filter housing and exhaust stack. For power generation, the AC generator is included.


    Interview with Willi Meixner

    An Interview with Siemens CEO of Power & Gas, Willi Meixner


    During the last years several upgrades of the SGT-800 have been released. What is the driver for these and what is the philosophy behind these design improvements?

    The main driver is to continuously improve the Combined Cycle efficiency, but also improving operational and fuel flexibility. One very important corner stone in the philosophy is reliability. We have a proven track record of high reliability, well in access of 99% year after year and in the last 12-month period as high as 99.6%. The evolution of the SGT-800 is built on a continuous development strategy, using proven technology and extensive testing. Everything to secure the outstanding reliability numbers in spite of regular release of improved ratings.



    Have you already gained operating experience from the recent upgrades that have been released?

    Yes, we have very good feedback from the units already installed at the customer sites. We have sold more than 60 units of the ratings we introduced to the market only two, three years ago. About 15 of these units are already in commercial operation and several more will go into commercial operation during the first half of 2018. With already more than 50 000 cumulated operating hours and with the fleet leader being running for about a year, we feel very confident with the design improvements that we introduced. To have this experience as a solid ground considerably reduces the risks for the most recent upgrades being made.


    SGT-800 videos: Product details and showcases


    More than 325 SGT-800 units sold worldwide: reference highlights

    A strong performer with excellent flexibility and reliability, the SGT-800 is popular all over the world. With a proven, long-term record of successful installations, it is an excellent choice for both industrial power generation and oil and gas applications.


    Reference map



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