Gas-fired power plants that are designed for future operation with hydrogen are referred to as H2-ready power plants. These plants can initially be operated with conventional natural gas and later, either partially or entirely, with hydrogen.
How It Works
The basic principle is similar to that of conventional gas-fired power plants: Gas is burned to drive a turbine, which in turn drives a generator to produce electricity. In H2-ready plants, however, the turbines can be operated either with a hydrogen-natural gas mixture or with pure hydrogen. This flexibility is a key advantage, as it provides investment security and ensures the plants are future-proof.
Technical Adjustments
Compared to conventional gas-fired power plants, H2-ready power plants feature specific modifications:
- Burner systems adapted to the different combustion characteristics of hydrogen
- Modified piping and seals, since hydrogen is a smaller molecule and escapes more easily
- Special materials that resist hydrogen embrittlement
- Enhanced safety systems, since hydrogen has a wider ignition range than natural gas
Significance for the Energy Transition
H2-ready power plants are important for the transformation of the energy system for several reasons:
- They serve as a bridging technology between the fossil-fuel-dependent present and a hydrogen-based future.
- They provide flexible backup capacity for renewable energy during periods of low sunlight and low wind.
- You can continue to use existing gas infrastructure.
- They help reduce CO2 emissions because hydrogen combustion produces only water.
Current expansion plans in Germany call for the installation of approximately 10 GW of H2-ready power plant capacity by 2030. These plants are initially intended to be fueled by natural gas and will be converted once sufficient hydrogen is available.
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