Just asked Ai if the Rough approval means that MESH will follow:-21 Apr 2026 16:39
“ Approval for the Rough gas storage facility does not directly mean Energy Pathway’s MESH (Marram Energy Storage Hub) scheme will automatically follow, but it indicates a regulatory environment favourable to increasing UK storage capacity.
As of early 2026, the two projects are distinct, with different timelines and statuses:
Rough Gas Storage (Centrica): The North Sea Transition Authority (NSTA) has approved operations until 30 April 2027, with plans for expansion to 120 bcf by 2027/2028.
MESH Project (EnergyPathways): This is a separate, proposed project in the East Irish Sea. While it has been designated as a "nationally significant" project by the Secretary of State (as of September 2025), which fast-tracks its planning process, it still requires its own gas storage licence and final investment decision (expected in 2025/2026) to proceed.
Why MESH is still progressing:
While not automatic, the approval of Rough shows the government is focused on expanding storage capacity for energy security, which supports the case for MESH.
National Significance Status: The MESH project was officially recognized as a Development of National Significance by Ed Miliband in September 2025, which allows it to proceed through the Planning Act 2008 for faster authorization.
Projected Benefits: MESH aims to offer similar capacity to Rough (approx. 50 bcf) but with added, modern hydrogen-ready storage capabilities.