Beatrice OFTO
OperationalOffshore GridGB588 MW220 kV90.9 km2018
Basic information
9 fieldsAlso Known As
Beatrice Offshore Transmission Owner · Beatrice offshore transmission assets · Beatrice offshore transmission project · TC Beatrice OFTO Ltd · TR6 Beatrice OFTO
Status
operational
Capacity
588 MW
Project Company
Type
offshore grid
Transmission Model
Developer Build & Transfer
Expected Life
23 years
Website
Supply Chain (6)
Project Timeline (35)
Jul 2025Cable Repair
Following the April 2025 outage on one of the Transmission Capital Partners‑owned 220 kV subsea export cables at the Beatrice offshore transmission system, NKT executed a turnkey repair campaign. Using its adaptive rigid sea joints, cable handling system, and the vessel North Sea Giant, NKT located the fault, carried out jointing and replacement works, and completed the offshore repair in just 38 days from contract signing, restoring the integrity of the damaged export circuit.
Jul 2025System Restoration
After completion of NKT’s repair works on the damaged 220 kV export cable at the Beatrice offshore transmission system, the cable was re‑energised by the end of July 2025. This re‑energisation fully restored the export transmission system’s capacity, returning the Beatrice OFTO link to normal operation and reinstating its ability to deliver power from the offshore wind farm to around 450,000 UK households.
Apr 2025Major Outage
In April 2025, an unplanned transmission outage occurred on one of the two 220 kV high‑voltage AC subsea export cables in the Beatrice offshore transmission system, which is owned by Transmission Capital Partners. The fault reduced the export capacity of the Beatrice OFTO link by around 50%, temporarily limiting the amount of renewable electricity delivered from the Beatrice Offshore Windfarm to shore.
Aug 2021Stake Transaction
In August 2021, TC Beatrice OFTO Limited purchased the Beatrice offshore wind farm transmission assets, including an undersea export cable, an onshore cable and associated onshore and offshore transmission equipment, along with the related contracts and licences, following a successful bid in an Ofgem-run open tender process. This acquisition, financed through a mix of equity, external lending and subordinated shareholder loans under the UK offshore transmission regulatory framework, gave the company long-term ownership of the Beatrice OFTO assets and the right to earn availability-based revenue for 23 years until August 2044.
TC Beatrice OFTO Limited (100%)
Jul 2021Fid Financial Close
In July 2021, International Public Partnerships Limited (INPP), via TC Beatrice OFTO Limited, reached financial close on the long-term ownership and operation of the Beatrice OFTO transmission link, financing the acquisition of the offshore and onshore transmission assets through a combination of equity, external lending and subordinated shareholder loans, for assets with an initial transfer value of approximately £498–498.5 million under Ofgem’s Tender Round 6 framework.
27 Jul 2021Regulatory Other
Authority: Ofgem · Licence: Beatrice Offshore Windfarm Transmission Assets Cost Assessment Report (CAR)
On 27 July 2021, Ofgem issued its Beatrice Offshore Windfarm cost assessment report for the transmission assets, setting out the methodology and results of its assessment from initial to final transfer values. The report describes the offshore and onshore transmission system, including the two offshore transformer modules and export cable circuits that connect the Beatrice wind farm to the onshore substation at Blackhillock, which would transfer to the eventual Beatrice OFTO owner.
27 Jul 2021Revenue Secured
By 27 July 2021, Ofgem had granted an offshore transmission licence to TC Beatrice OFTO Limited, a consortium of Transmission Capital Partners Limited Partnership and International Public Partnerships Limited, for the Beatrice transmission assets, securing a 23-year tendered, inflation-linked revenue stream based on the assessed transfer value under the OFTO regime.
Jun 2021Public Consultation
In June 2021, Ofgem published the draft cost assessment report for the Beatrice transmission assets alongside a Section 8A consultation, formally setting out its assessment of efficient costs and proposed transfer value for stakeholders before licence grant.
Mar 2021Regulatory Other
In March 2021, Ofgem issued the draft cost assessment report for the Beatrice transmission assets to the developer and the Preferred Bidder, providing them with the draft view of assessed costs and proposed transfer value for comment and information.
Dec 2020Regulatory Other
From June to December 2020, the developer provided Ofgem with final cost reporting updates and supporting information for the Beatrice transmission assets, enabling completion of the cost assessment that underpins the Final Transfer Value.