Published January 15, 2021 | Version 1.07
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Definition of selected business cases and scenarios


The aggregation of smaller scale, distributed renewable energy systems for the provision of grid
services already exists in several European countries. There are reports on countries adapting to
the market rules in order to comply with the harmonization efforts of the EU [5], thereby opening
opportunities for water electrolysers to earn additional income from the provision of grid services.
The water electrolyser, as a key technology of sustainable hydrogen production, can offer high
operational flexibility for grid services such as frequency control and congestion management.
Servicing those markets as a by-product, the WE can stack value that is relevant for bridging the
gap towards market parity. This report identifies the best opportunities for the European grid
service markets to be served by water electrolysers.Data is available for 25 European countries
including Norway and Switzerland. 85 TSO grid services within 12 countries are identified as
commercially and technically feasible candidates. With eight such cases a more detailed economic
analysis is conducted. It was found that offering the water electrolysers’ flexibility to the grid service
markets can reduce the levelized cost of hydrogen by approximately 10%.



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QualyGridS – Standardized Qualifying tests of electrolysers for grid services 735485
European Commission