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HomeGas EnginesJenbacher Type 9: J920 FleXtra
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Jenbacher Type 9: J920 FleXtra

Whether you’re seeking full power at high efficiency levels or a 10MW unit capable of start-up in 2 minutes, INNIO’s Jenbacher J920 FleXtra gas engine is a reliable solution for large gas engine power generation plants.

This Jenbacher gas engine is designed to support a broad variety of multiple-engine power plant solutions–from remote power supply to combined heat and power (CHP) generation.

    • Front View of a Jenbacher J920 Gas Engine
      • Front View of a Jenbacher J920 Gas Engine (CHP Module)
        • Front View of a Jenbacher Type 9 Gas Engine (Container)
        • Front View of a Jenbacher Type 9 Gas Engine Powerpack (Container)

          Change the scope of supply by clicking on a thumbnail.

        Scope of supply:

        50 Hz

        60 Hz

        * Provided technical data is for information only. Data ranges are calculated considering various gas quality levels and ambient conditions (standard or hot/tropical conditions, etc.). Jenbacher can change the technical data unilaterally. In the case of such change, we will update the data on our pages as soon as we can. Please reach out to our experts to get help with engines selection, obtain the technical parameters for your gas composition. Output and efficiency at generator terminals. Energy input is according to DIN ISO 3046 and DIN 6271, respectively, with a tolerance of + 5%. All data according to full load and subject to technical development and modification. Based on emission values of 250 and 500 mg/Nm3 NOx at 5% O2 at dry exhaust gas. Base for biogas and sewage gas versions: 65% CH4 / 35% CO2. Base for landfill gas version: 55% CH4 / 40% CO2 / Rest N2.

        Electrical Output10,400 kW

        Thermal Output10,021 kW

        Voltage6.3kV, 10.5kV

        Electrical Efficiencyup to 48.7 %

        Thermal Efficiencyup to 45.3 %

        Fuel TypeNatural Gas



        Jenbacher J920 FleXtra Overview

        The newest and largest Jenbacher gas engine has, at 48.7 percent, the highest electrical efficiency of any Jenbacher gas engine.

        • A smaller carbon footprint and more energy efficiency.
        • High power density at low investment costs.
        • Stable power output and reliable efficiency in any ambient condition.
        • Quick startup for grid stabilization and easy maintainability.

        J920 Features

        INNIO’s J920 FleXtra Jenbacher engine is designed for durability, simple installation, and maintainability. The GenSet consists of three modules, including a generator, engine, and a turbocharger module, providing a high quality, pre-fabricated, standardized generator-set module. Each module is factory-tested, then shipped separately and assembled onsite, offering reduced installation time. In addition, the modules have highly standardized interfaces that work well with balance of plant (BOP) systems, and ultimately simplify BOP installations and total plant erection time. To maximize plant availability, the J920 FleXtra is optimized for operation and maintainability in the following ways:


        POWER UNIT

        The J920 FleXtra power unit concept ensures low maintenance downtime as the complete power unit consisting of cylinder head, water jacket, cylinder liner, piston and con-rod can be exchanged with one assembly.


        With the Jenbacher J920, 10.4 MW of electric power can be provided from the start in 2 minutes. Newest model-based control technology ensures low engine-out emissions levels during the engine start and operation. Together with integrated after-treatment systems and controls overall NOx emissions are minimized over the full load range and even during fast transient operations.


        The J920 FleXtra is equipped with a segmented camshaft to support fast maintenance of individual segments through a service window at the top of the crankcase instead of disassembly of the whole camshaft.

        J920 Services: from start to finish


        Based on our modular plant concept and your specific requirements, our highly experienced system engineers guide you through every critical planning phase (including the feasibility study, power plant engineering, and design) to tailor the best solution for your plant.

        Plant Realization

        INNIO's trained project and system engineers offer project management expertise to support you during the plant realization phases. Construction and commissioning procedures are standardized to minimize risks and assure a successful implementation. As part of our construction and plant installation services, INNIO provides worldwide engineering and procurement, and construction support through its qualified EPC-network. Our start-up and commissioning service also includes a series of tests performed by our experienced service technicians to ensure the optimum installation and functionality of the J920 gas engine in your plant.


        Our contractual service agreements are designed to provide flexible and optimum care for your plant during operation. Through our global service network, you’ll have dedicated personnel that help ensure predictable operating costs of the Jenbacher J920 and risk mitigation. Remote diagnostics provide you with online access to your plant and J920 FleXtra equipment, thereby minimizing downtime, increasing plant availability, and lowering expenses for corrective maintenance. All work on your J920 FleXtra gas engine system — including upgrade, repair, and overhaul — is performed at your plant, saving you time and updating your engine with the latest technology.

        2-stage technology

        The 2-stage turbocharger design of the J920 Flextra allows for no deration at higher altitudes and higher cooling water temperatures-perfect for hot ambient conditions.

        Modular design for flexibility

        Modular gas engine design allows for seamless installation with any multiple-engine configuration and offers flexible size options.

        Superior total efficiency

        Operating a Jenbacher J920 FleXtra at about 94% of total efficiency and 48.7% of electrical efficiency.

        Scope of supply:

        Combined Heat and Power Module (CHP Module) J920 FleXtra solutions allow customers to generate power and heat simultaneously at a very high total efficiencies, of about 94%.

        The simple use of jacket water heat and heat from oil and charge air coolers, combined with heat from the gas engine exhaust makes CHP in combination with the J920 FleXtra gas engine a favorable solution. When the heating water circle is designed to include return water at 70°C and hot water at 90°C or more a high total efficiency is achieved. The 2-stage turbocharging technology has the ability to increase the total efficiency for providing power and heat up to the level of around 94%.

        CHP Modules can generate hot water or steam at various parameters and can be integrated with your existing heat infrastructure. You can select the option that fits your project’s needs among the various heat recovery schemes provided by Jenbacher.

        The scope of supply can be extended further with various balance of plant options (BOP) offered by Jenbacher, reach out to our specialists for help in selecting scope of supply and BOP options to fulfill your project’s needs.

        J920 FleXtra solution inside a powerhouse:
        INNIO’s J920 FleXtra is specially adapted to large gas engine power plants. It offers a highly standardized powerhouse plant concept with fast delivery times and low installation costs. While the size of the plant, actual plant design, and layout depend on your specific customer needs and site requirements, the J920 FleXtra plant solution is developed as a modular system with a minimal footprint. This design allows for seamless installation with any multiple-engine configuration, and, therefore, offers flexible size options for a multiple 10 MW system at constant high electrical efficiency levels. Combining the multiple-engine concept with a 2-minute engine start-up time provides flexible power – from baseload to cyclic and peak operations.

        Balance of Plant

        The right auxiliary equipment is of critical importance in ensuring that a power solution is economically feasible and gets your business the most in terms of reliability, availability and efficiency. Click on provided balance of plant options to learn more. Reach out to our experts to select the configuration that fits your business’ needs.

        Available BOP elements may vary depending on the engine and application type.

        Type 9 Case studies

        • GAMOR Saarbrücken CS - foto

          GAMOR Saarbrücken (GER)

          Environmentally friendly heat and electricity from Saarbrücken


          Saarbrücken, Germany

          Installed engines

           5 x J920 FleXtra

          Electrical output

           53 MW

          Thermal output

           52,5 MW

          Energy source

          Pipeline gas 

          Year of commissioning


        • J920 Rom

          Acea Produzione SpA (ITA)

          J920 FleXtra gas engines deliver enhanced flexibility, greater efficiency, and lower emissions

          Electrical output

            ~120 MW

          Thermal output

          ~70 MW

          Start time

          ~120 minutes

        • Fernwärme Ulm GmbH

          Fernwärme Ulm GmbH (GER)

          Ulm completes its coal phaseout, thanks to two Jenbacher J920 Flextra cogeneration plants

          Installed units

          2 x J920 FleXtra

          Electrical power

          2 X 10 MW

          Thermal output

          2 x 9,6 MW

          Electrical efficiency



          CO 100 mg/Nm³ @ 5% O2-tro (daily average)


          NOX100 mg/Nm³ @ 5% O2-tro (daily average)


          Pipeline gas



        • SkyGlobalProject1

          Sky Global Power One (TX, USA)

          Natural gas power plant provides grid support during unusual winter storm crisis in Texas


          Rock Island, Texas, United States


          IPPs, Utilities and Peaking Power


          Power generation

          Jenbacher equipment

          6 x Jenbacher J920 FleXtra gas engines

          Fuel type

          Natural gas

          Power output

          51 MW



        • Stadtwerke Rosenheim

          Stadtwerke Rosenheim (GER)

          The J920 FleXtra engine from INNIO allows the city of Rosenheim to generate flexible distributed power & heat by operating in a highly efficient combined heat and power application mode.


          Rosenheim, Germany

          Installed units

           1 x J920 FleXtra

          Electrical power

           9.5 MW

          Thermal power

           10 MW


          Natural gas



        Our Services

        • Digital Solutions for Jenbacher

          Jenbacher myPlant Performance Solution

          Our cloudbased technology lets you manage your assets wherever you are, secure and live. Take control of the operating performance and profitability of your gas engine by giving it a digital life.

          Jenbacher myPlant Performance Solution
        • Remanufacturing program

          Jenbacher Remanufacturing Program

          Innovative solutions that give your engine and parts a new life. The Jenbacher* Remanufacturing program gives your engine and all of its parts a new, longer life, returning used components to like-new conditions.

          Jenbacher Remanufacturing Program
        • Gas Engine multi year agreements

          Jenbacher Multi-Year Agreements (MYA)

          Improve your performance at lower cost. Our multi-year agreements (MYA) are tailored service agreements to complement your capabilities with maintenance coverage, performance guarantee and operation support.

          Jenbacher Multi-Year Agreements (MYA)
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