The world’s first integrated power-to-X-to-power hydrogen gas turbine demonstrator

Generating renewable electricity is one of the main ways in which we can reduce CO2 emissions and tackle climate change. However, sources of renewable energy such as wind and sun suffer from supply and demand imbalances. Energy storage in the form of hydrogen could provide a remedy for this problem: excess renewable electricity is fed into an electrolyser to split water into oxygen and hydrogen. The green hydrogen is stored and subsequently used in gas turbines to produce electricity when needed, releasing the stored energy back to the grid.


In this line, HYFLEXPOWER project will develop and operate the first fully integrated power-to-hydrogen-to-power industrial scale power plant, including an advanced dry-low emissions hydrogen gas turbine. The already installed SGT-400 gas turbine package will be upgraded with the ultimate goal to produce 12 MW electrical energy using fuel mixtures that contain up to 100 % hydrogen.


During two demonstration campaigns, the Smurfit-Kappa paper mill in Saillat-sur-Vienne (France) will be powered by a mix of natural gas and hydrogen, ultimately aiming for up to 100 percent hydrogen operation.


To test an entirely green hydrogen-based power supply for a completely carbon-free energy mix


  • Conversion of excess RES power to chemical energy (H2) through electrolysis of water
  • Integration of H2 storage into the demonstration plant
  • Development of an advanced gas turbine capable of running on high-hydrogen fuels
  • Development and demonstration of an advanced plant concept
  • Running of two extensive pilot plant demonstration campaigns