Power-to-Gas Energy Storage

Injection of hydrogen produced by electrolysis into the gas grid is a way of storing energy from the electricity grid by exporting it to the gas grid.

Clean Fuel

Power-to-Gas Rationale
Power-to-Gas Rationale
Energy Storage Technologies
Energy Storage Technologies

HGas Deployed

ITM Power has deployed its PEM Electrolysis P2G plant HGas at the Mainova Aktiengesellschaft site in Schielestrasse, Frankfurt am Main where the compliant gas mixing and grid injection infrastructure designed and built by NRM was already in place. This plant is part of the Thüga Group’s Power-to-Gas (P2G) project as previously announced, which was jointly commissioned by 13 partners within the Thüga Group to investigate P2G energy storage. The install also includes a monitoring facility and visitor’s reception so that members of the Thüga Group can examine the performance of the plant.

HGas converts electrical energy into chemical energy, which in turn facilitates the storage of electricity. A gas mixing plant ensures that the proportion of hydrogen in the natural gas stream does not exceed two per cent by volume, the technically permissible maximum value when a natural gas filling station is situated in the local distribution network. The electrolyser supplies the hydrogen-methane mixture at the same pressure as the gas distribution network, namely 3.5 bar which avoids using a compressor and saves costs.

Benefits of Power to Gas
Value to the Power Grid
  • Avoided wind curtailment
  • Avoided infrastructure upgrades
  • Reduced reserve power
  • Reduce CO2 from open cycle GTs
  • Absorbing reactive power
Value to the Gas Grid
  • Decarbonising gas
  • Providing renewable heat
Value to the Economy
  • Reducing fuel imports
  • Improved energy security
  • Creating jobs in manufacturing