System and method for electrolysis plant interconnected to renewable energy power source and power grid

A method comprising:

• electrically coupling an electrolysis plant comprising a plurality of electrolyzers to a renewable energy electrical power source to energize respective ones of the plurality of electrolyzers in respective operating conditions;
• connecting a control system of the electrolysis plant in parallel circuit to the renewable energy electrical power source and to a power grid;
• detecting occurrence of a power outage or otherwise insufficient power supply by the renewable energy electrical power source;
• upon detecting the occurrence of the power outage or the otherwise insufficient power supply by the renewable energy electrical power source, energizing with the power grid the control system and controlling, by way of the control system, the respective ones of the plurality of electrolyzers to be brought to respective standby conditions;
• electrically coupling the plurality of electrolyzers to the power grid to energize the respective ones of the plurality of electrolyzers in the respective standby conditions;
• electrically coupling a backup power supply to the control system;
• detecting occurrence of concurrent power outages or otherwise concurrent insufficient power supply by i) the renewable energy electrical power source and ii) the power grid;
• upon detecting the occurrence of the concurrent power outages or the otherwise concurrent insufficient power supply by i) the renewable energy electrical power source and ii) the power grid, energizing, by way of the backup power supply, the control system;
• and
• pre-selecting an energy rating and/or power rating of the backup power supply to provide a predefined amount of power to the control system over a period of time sufficiently long to bring the respective ones of the plurality of electrolyzers to respective idle conditions, and
• wherein the backup power supply is a battery backup power supply and the period of time is in a range from approximately 7 minutes to approximately 15 minutes.