Energy storage and clean fuel company ITM Power has won a competitive tender process, based on both price and performance, for a Thüga Group project, to supply a 360kW Power-to-Gas energy storage plant.

The contract is ITM Power’s first major commercial sale in Germany of a large hydrogen production unit based on its unique design of a self-pressurising rapid response PEM Electrolyser.

It is seen as a key development for ITM, highlighting its expertise in the energy storage and clean fuel sector. Further, it is a significant entry into the German market, given the country’s recent change in stance on the nuclear power route.

Power-to-Gas energy storage is rapidly growing in significance in Germany and this deployment with Thüga-Group is the largest ever PEM Electrolyser deployment in a Power-to-Gas application to date. PEM electrolysers are able to respond rapidly to fluctuating renewable inputs and so are able to store renewable energy as hydrogen for injection into the gas grid.

The unit in question produces 125kg/day of hydrogen gas and incorporates AEG power electronics, and will be situated at a Mainova AG site in the Schielestraße, Frankfurt, in the state of Hessen.

Operational data will be shared by the whole Thüga group – the largest network of energy companies in Germany, with around 100 municipal utility members.


The ITM Power technology is unique since it can respond in one second and is self-pressurising up to 80bar, permitting direct injection into the German gas grid.

Michael Riechel, CTO, Thüga Aktiengesellschaft, commented, “In the decade between 2020 and 2030 we will need to store excess renewable energy in significant volumes. We have calculated that the municipal natural gas network is capable of storing all future generated excess renewable energy.”

“In order to transform green electricity into hydrogen or methane we need an economic best practice. It is important for the advancement of Power-to-Gas technology to make the transition from lab to practical demonstration. We believe that the natural gas distribution system could be the battery of the future, and we are now building the charger.”

Phil Doran, Managing Director of ITM Power GmbH, added, “This is our first significant sale into the German utility market and is recognition of ITM Power’s expertise in the energy storage and clean fuel sector. Germany is the leading market for energy storage technology, particularly after the Government’s decision to pull out of nuclear generation.”