Final Determinations: East Coast and Hyline Cymru Hydrogen Network FEED re-opener applications

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As part of the RIIO-2 price control, network companies can apply for additional allowances via re-opener uncertainty mechanisms.

In April 2025, we consulted on our draft determinations and associated draft directions for East Coast and Hyline Cymru Hydrogen Network FEED re-opener applications.

Our decisions, having taken account of all consultation responses, are set out in these Final Determinations and associated Final Directions to implement our decisions.

Main document

[Final Determinations East Coast and Hyline Cymru Hydrogen Network FEED studies [PDF, 348.03KB]

](https://www.ofgem.gov.uk/sites/default/files/2025-06/Final%20Determinations%20East%20Coast%20and%20Hyline%20Cymru%20Hydrogen%20Network%20FEED%20studies.pdf)

Subsidiary documents

[Direction Cadent East Coast North [PDF, 181.59KB]

](https://www.ofgem.gov.uk/sites/default/files/2025-06/Direction%20Cadent%20East%20Coast%20North.pdf)

[Direction National Gas Transmission PU East Coast [PDF, 181.07KB]

](https://www.ofgem.gov.uk/sites/default/files/2025-06/Direction%20National%20Gas%20Transmission%20PU%20East%20Coast.pdf)

[Direction Northern Gas Networks East Coast [PDF, 185.75KB]

](https://www.ofgem.gov.uk/sites/default/files/2025-06/Direction%20Northern%20Gas%20Networks%20East%20Coast.pdf)

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