UK Offshore Transmission Network Review (OTNR) – latest developments
BEIS and the GB energy regulator Ofgem are looking at the GB offshore transmission network: the power cables that connect the GB electricity grid to the Continent and also connect offshore wind farms to the onshore GB electricity grid. At the moment, the regulatory framework draws a distinction between the two. This runs the risk of the North Sea and Irish sea becoming a spider's web of cables and the foreshore getting crowded with substations, as each wind farm has its own connection to the mainland.
The solution is "multi-purpose interconnectors" (MPIs) that connect wind farms to each other and to the GB and Continental mainland in a "daisy chain" pattern. But at the moment, the legal framework makes this difficult. BEIS and Ofgem launched the OTNR in 2020 to look at the barriers the offshore transmission regime presents to further significant deployment of offshore wind.
The latest developments are:
- A response from BEIS to a consultation on proposals for an enduring regime and multi-purpose interconnectors (looking at the longer term, after 2030);
- A consultation from Ofgem on an interim regime for MPIs in the near term; and
- A consultation from Ofgem on anticipatory investment in MPIs, looking at who pays for infrastructure that is built in anticipation of later wind projects connecting to it.
We have summarised each development in a separate Insight. The two Ofgem consultations close on 9 June so you still have a few days to respond.
Ofgem has published a minded-to decision to apply a ‘very late competition - generator build’ model to non-radial offshore transmission in scope of the Pathway to 2030 (PT2030) workstream of the Offshore Transmission Network Review (OTNR) and a consultation on the consequential arrangements that may be required to implement the ‘very late competition - generator build’ model, for non-radial offshore transmission. The consultation runs until 15 July 2022.
Ofgem, 20 May 2022