Method and apparatus for generating, storing and using hydrogen

Apparatus for supplying hydrogen gas for consumption in at least one downstream process, said apparatus comprising:

• a plurality of electrolysers arranged in parallel for producing hydrogen gas;
• an electricity generation system for generating electricity from a renewable energy source to supply at least some of the electricity required to power said plurality of electrolysers,
• said electricity generation system being in electrically conductive communication with said plurality of electrolysers;
• a multistage compression system for compressing hydrogen gas, said multistage compression system comprising a feed end and an outlet end, said feed end being in fluid flow communication with said plurality of electrolysers;
• at least one downstream processing unit for consuming compressed hydrogen gas, said downstream processing unit(s) being in fluid flow communication with said outlet end of said multistage compression system;
• a storage system for storing compressed hydrogen gas, said storage system being in fluid flow communication with said outlet end of said multistage compression system and at least one compression stage of said multistage compression system;
• and
• a control system for controlling pressure and flow of compressed hydrogen gas from said multistage compression system to said storage system and for controlling pressure and flow of compressed hydrogen gas from said storage system to said multistage compression system based on the level of production of hydrogen gas by said electrolysers and/or the demand of the downstream process(es).