Ofgem to Launch Record Tender as UK Regulator Seeks Owner of Hornsea 3 Offshore Transmission Assets

The UK energy regulator Ofgem will launch a tender round covering the transmission infrastructure for Ørsted’s 2.9 GW Hornsea 3 offshore wind farm on 21 October.

The competition is estimated to be worth around GBP 3.5 billion (approximately EUR 4 billion), making it the largest Offshore Transmission Owner (OFTO) tender round to date.

The competitive process will seek an owner for the project’s offshore transmission assets, which carry electricity generated by the wind farm to the onshore grid.

Hornsea 3’s offshore transmission system comprises two offshore converter stations, which were installed by September 2026, and offshore export cables, the first of which was laid and pulled ashore at the beginning of this year. The transmission infrastructure also includes onshore cables and a converter station in Norfolk, connecting the wind farm to the national grid.

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