Zero Emission Hydrogen Turbine Center

– on the path to decarbonization
Our goal: zero emissions

Showcasing a future energy system with hydrogen turbines

The next decades are expected to be among the most transformative the energy sector has ever seen when the world is moving away from fossil fuels. As part of this transformation we expanded our own gas turbine test facility in the town of Finspång, Sweden, to become a model of the future energy system.

Together with international partners within the research project Zero Emission Hydrogen Turbine Center (ZEHTC) we set up a demonstration plant to showcase a flexible and sustainable energy system connecting gas turbines with hydrogen, renewable energy and energy storage. This provides valuable insights to be able to accelerate into a decarbonized energy future.

The Zero Emission Hydrogen Turbine Center at a glance

The project idea

Watch our video to learn more

The demonstrator plant  will provide valuable insights to be able to accelerate into a decarbonized energy future.

Read more about the project and all the partners on our partner website


How does it work?

The test center opens up multiple possibilities: Excess energy from gas turbine tests and electricity from solar panels is used to produce hydrogen in an electrolyzer. The energy is stored as compressed hydrogen and in batteries.

This way a closed loop plant is created, producing its own hydrogen for our continued research and development to optimize the use of hydrogen in gas turbines. All this also while supporting our goal to be able to run our gas turbines on 100% hydrogen by 2030.

Click on the labels to learn more about the components of the solution
Solar Panels

Solar panels are installed at the gas turbine production site to generate electricity that will be used for producing green hydrogen.


Technical specifications:

  • 133 kW peak (DC)
  • 100 kW (AC)
  • About 1500 m2 ground area
Battery Storage

Battery storage is used to increase the operation flexibility of our energy system and to show different possibilities of storing energy; either as compressed hydrogen and/or as electricity in batteries.


Technical specifications:

  • 75 kW / 76 kWh
  • enables island operation of the system (decoupled from external electricity grid)
H₂ Storage

We store hydrogen produced in the electrolyzer and feed it back into the plant as gas turbine fuel when we need it for the next test.


Technical specifications:

  • 24,000 liters @200 bar, which is about 360 kg
  • Stored in bottles
LNG and Biogas

The main fuel used at the gas turbine testing facility has been natural gas. In 2020 biogas was added in the strive to reduce the environmental impact and to demonstrate fossil free gas turbine operation.

The more green fuels like biogas, and/or hydrogen, are blended into the mix, the less CO₂ is emitted into the air. 

National grid

During the delivery tests, the gas turbines generate a huge peak of electricity. A big portion of this electricity is fed into the national electrical grid.

However, the grid cannot handle all of the generated electricity. Part of this excess power will, as part of the Zero Emission Hydrogen Turbine Center, be directed to an electrolyzer to produce hydrogen that can be added as carbon-free gas turbine fuel at the next gas turbine test.

Electrolyzer and Compressor

The electrolyzer produces green hydrogen from solar energy – and from the excess power of the gas turbine delivery tests. We can then compress the hydrogen and store it to feed it back into the plant as gas turbine fuel when we need it for the next test.


Technical specifications:

  • PEM Electrolyzer 225 kW: 47 Nm3/h hydrogen production capacity @nominal operation, which would give about 100 kg per day in full time operation
  • Diaphragm compressor 15,5 kW: compress the hydrogen from 30 bar to the storage pressure of 200 bar

Siemens Energy in Finspång, Sweden, has three active test riggs in operation for performing complete mechanical running tests (MRT) on gas turbines SGT-600, -700, -750 and SGT-800.

The fuel used is natural gas, and since 2020 also biogas. In 2021 hydrogen will be added to the mix. This fuel shift is in line with the target for the test facility to be CO₂ neutral by 2030.


Gas turbine operation @ 15%vol hydrogen: 

  • One hour of full load test operation consumes 150 kg hydrogen and saves 360 kg fuel gas and about 1 ton C0₂ emissions *


*Assumptions: Typical medium size gas turbine (30-35 MWel) fuel consumption – SGT-700

The future of gas turbines

So, what is the role of gas turbines in a sustainable energy system?

Gas turbines have proven to be very effective in balancing intermittent renewable energy production due to their flexibility and short ramp-up times. According to the International Energy Agency, gas turbines will play an important role in providing flexibility in the electrical grid in a Sustainable Development Scenario.

H₂ capabilities of our medium-sized gas turbines

As of today, the gas turbines we're testing in our new Zero Emission Hydrogen Turbine Center are ready to burn up to 75% of hydrogen in the fuel mix. And step by step we aim to reach 100% by 2030.

A sustainable energy system

Gas turbines with hydrogen as fuel have great potential to provide more stability in future energy systems that involve increasing shares from renewable sources without increasing carbon emissions.

As power from solar and wind is highly volatile and does not always match the energy demand, hydrogen – produced from these green energy sources – can be used as an energy storage solution. The subsequent combustion of hydrogen results in zero carbon emissions.


Gas turbines provide in themselves renewable power when running on hydrogen, or any other fossil-free fuel like e-fuels (i.e. e-methanol, e-diesel, e-methane) or bio-fuels (i.e. bio-methanol, ethanol, or bio-diesel).

References and Use Cases