Jenbacher J920 FleXtra

Jenbacher J920 FleXtra

Electrical Output9,352kW

Thermal Output7,472kW

Electrical Efficiencyup to 49.3%

Thermal Efficiencyup to 39.4%

Voltage4.16kV – 13.8kV

Fuel TypeNatural Gas

Whether you’re seeking full power at high efficiency levels or a unit capable of start-up in less than 3 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 Flextra Gas Engine / branded V2

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.

Did you know?

With more than 90% overall efficiency compared to the separate production of heat and electricity, a J920 FleXtra as a CHP solution is designed to achieve over 130 millions kWh primary energy savings over the course of a year, equivalent to the energy contained in more than 76,000 barrels of oil.

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:



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 demand in less than 5 minutes. Newest model-based control technology ensures lowest engine-out emissions during engine start. 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 performance

Operating a Jenbacher J920 FleXtra at 49.9% electrical efficiency level has the capacity to produce approximately 68 million kWh of electricity.

Why Jenbacher?

High Efficiency

Efficiencies with solutions using Jenbacher gas engines can reach 90% or more with CHP.

Lower Emissions

Reduced CO2 emissions and advantage of lower-priced natural gas vs. diesel fuel.


Fuel-flexible solutions and a variety of output ranges from 200kW to 10MW suit your business.


Your local power generation experts.

Jenbacher gas engines have been delivered in 100-plus countries.



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