0799: UNC arrangements for the H100 Fife project (100% hydrogen)

Summary

UNC modification 0799 creates specific code arrangements for the H100 Fife project to test 100% hydrogen distribution through existing gas networks. The modification was implemented in 2022 following authority direction. This establishes regulatory framework for hydrogen trials within the Uniform Network Code.

Why it matters

Creates precedent for hydrogen network trials but remains confined to demonstration projects rather than market-wide structural change. The gas network focus means minimal direct impact on electricity system design.

Key facts

• •H100 Fife project tests 100% hydrogen distribution
• •Authority direction implemented 2022
• •UNC code modification creates specific arrangements

Timeline