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FLEXibilize combined cycle power plant through Power-to-X solutions using non-CONventional FUels

This project has received funding from the European Union’s Horizon 2020 research and innovation programme

Duration  48 months
Start April 2020
Total amount of the project  12.6 M€
Grant agreement  884157
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In order to achieve the EU 2030 and 2050 Climate and Energy goals, a high penetration of renewable energy sources (RES) into the grid is required, as well as the use of alternative carbon-free fuels in already existing dispatchable centralised power plants. Combined Cycle Gas Turbine (CCGT) plants will be a crucial technology with the required flexibility to compensate the intermittency of the RES.

The injection of alternative fuels (i.e. hydrogen (H2) and ammonia (NH3)) will help the required “fuel switch” the EU is facing, drastically reducing CO/CO2/HC emissions, which are more difficult to manage in comparison to NOx. The P2X solutions, which are currently widely studied coupled with RES, could help the CC to levelling their load and reducing its environmental impact.

Hence, developing proper technologies and solutions to couple P2X2P systems with gas turbines (GTs) is mandatory



FLEXnCONFU - FLEXibilize combined cycle power plant through Power-to-X solutions using non-CONventional fuels is a research project funded by Horizon2020 EU’s research and innovation programme (GA 884157), with the goal to develop and demonstrate innovative, economically viable and replicable Power-to-X-to-Power (P2X2P) solutions that combines all available options for the effective and flexible use of surplus power from renewable energies to levelling the power plant load by converting electricity into hydrogen or ammonia prior to converting it back to power.

This will enable the design and operation of an integrated power plant layout that can un-tap additional Combined Cycle (CC) flexibility.

FLEXnCONFU, covering the whole value chain, is a pioneer “demonstration to market” project which will contribute to the valorisation of European GT and Power-to-Gas scientific and technological competencies, and to the creation of a clean hydrogen/ammonia society

  Power to Hydrogen to Power


Power to Ammonia to Power 


Source :



The consortium with 21 partner organisations from 10 countries (Italy, Portugal, UK, Spain, France, Greece, Germany, Belgium, Sweden and the Netherlands), is led by RINA Consulting. T

Germany Technische Universität Darmstadt
Belgium Hydrogenics (membre de la famille Cummins)
ENGIE Laborelec
Université catholique de Louvain
European Turbine Network
Spain Centro De Investigación de Recursos Y Consumos Energéticos
France Commissariat A L Energie Atomique Et Aux Energies Alternatives
Université D’Orléans
Greece Centre for Research & Technology Hellas - (CERTH)
MAS Advanced Technologies for Power And Energy


RINA Consulting
Baker Hughes
Tirreno Power
ICI Caldaie
Università di Genova
Netherlands Proton Ventures
Eindhoven University of Technology
Portugal EDP Gestão da Produção de Energia
Center for New Energy Technologies
United Kingdom Cardiff University
Sweden KTH Royal Institute of Technology


Work Plan

The FLEXnCONFU project is divided in 9 Work Packages

Work programme

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Expected Results

Within FLEXnCONFU project, to level the CC load, the electricity production could be converted in H2 or NH3 as carbon free fuels via P2X2P application, in turn to be locally re-used in the same power plant to respond to varying demand.

This solution will be demonstrated up to the Technology Readiness Level (TRL) 6 deploying a Power-to-Ammonia system in a relevant environment (a micro gas turbine operating in a smart grid context, Savona lab) and up to TRL 7 installing a power-to-hydrogen system in a real operational environment (EDP’s Ribatejo power plant).

To exploit the potential of NH3 combustion in reducing CO2 emission, combustion tests up to 100% NH3 will be performed in a heavy duty representative GT combustion system (Cardiff University combustion lab).

The new FLEXnCONFU layout will unlock the current situation of low operating-hours CCGT power plants by providing secure back-up and improving CCs flexibility as well as overall efficiency, allowing a smoother operation and reducing air pollutant emissions. The FLEXnCONFU system can be coupled to both combined heat and power CC and natural gas CC as well as to an integrated coal gasification combined cycle, guaranteeing a wide replicability potential and a cleaner EU fossil based power plant fleet.


Contact : Christine ROUSSELLE ⇒

Link to project site

Link to the press release