ISO N1178 Hydrogen Generators Using Water Electrolysis – Testing protocols for performing electricity grid services Under development International
Organization	International Organization for Standardization (ISO) Technical Committee No. 197 – Hydrogen Technologies
Identification	ISO N1178 Hydrogen Generators Using Water Electrolysis – Testing protocols for performing electricity grid services
Scope	This technical report describes testing protocols for water electrolyser systems with the focus on alkaline and PEM water electrolysers. The purpose of these protocols is to determine if an electrolyser has the basic capabilities of providing electricity grid service. It also covers test apparatus, measuring instruments and measuring methods, and evaluates test reports for electrolyser systems.
Status	Initiated in 2020.
Committee Information	Convener: Stefanie Reissner Project Leader: Cyril Bourasseau