This 2nd deliverable from WP4 gives an overview of relevant existing certification experience, on-going standardization activities and field trials in the European Union and other countries, regarding gas appliances using H2NG. It gives a picture of the today’s situation as many of the identified initiatives are ongoing and progressing continuously.

This document includes many contributions and exchanges from the dedicated workshop on 31st of March 2021 (replay available here) and interactions with several other people with relevant experience. It also includes feedbacks from experiences with town gas which often contains significant concentrations of hydrogen.

20211209 D4.2 – overview of relevant existing certification experience and on-going standardization activities