Pinsent Masons advises Diamond Transmission Partners Walney Extension Limited on £447m acquisition and financing of offshore transmission assets

11 Jun 2020 | 03:17 pm | 1 min. read

Multinational law firm Pinsent Masons has advised Diamond Transmission Partners Walney Extension Limited on the £447m acquisition and financing of the transmission assets relating to the 659MW Walney Extension offshore windfarm from Walney Extension Limited.

This regulated divestment of transmission assets, including the onshore substation, export cables and offshore substations, took place in accordance with tender round 5 of Ofgem's offshore transmission owner (OFTO) regime, whereby DTP Walney Extension was awarded an offshore transmission licence to own and operate the transmission assets following a competitive tender.

DTP Walney Extension is a partnership between Diamond Transmission Corporation Limited (a wholly owned subsidiary of Mitsubishi Corporation), HICL Infrastructure PLC, and Chubu Electric Power Company Netherlands B.V. (a wholly owned subsidiary of Chubu Electric Power Co., Inc.).

Walney Extension is a shared-ownership project between Ørsted (50%) and the project’s partners PFA and PKA (25% each).

The multidisciplinary London and Glasgow based Pinsent Masons team that advised DTP Walney Extension included Senior Associate David Ross and Solicitor Catherine Lusher advising on property aspects. Associate Philippa Godwin and Solicitor Imogen Dewar advising on planning and regulatory issues, Partner Murdo Maclean and Solicitor Beren Shorman advising on energy regulatory, projects and construction law matters and Partner Stephen Tobin, Senior Associate Michael Marston and Paralegal Tai Nguyen advising on financing matters. The acquisition team was led by Legal Director David Trethowan.  

Commenting on the deal David Trethowan said, "We are proud to have supported the Diamond Transmission consortium on another acquisition and financing of offshore transmission assets as part of the Ofgem competitive tender regime,  particularly given the current challenging circumstances.  The successful completion of this transaction is a further demonstration of the firm's market-leading expertise in the offshore wind and offshore transmission sector".

Latest press releases

Show me all press releases

Pinsent Masons advises on €1 billion variable annuity policies transfer

Multinational law firm Pinsent Masons Irish corporate insurance team has advised Athora Ireland plc (Athora) on its transfer of a book of variable annuity policies to Monument Life Insurance DAC, with assets under management valued at nearly €1 billion for circa 13,000 customers.

Grant Thornton and Pinsent Masons collaborate to support effective data sharing across financial services

Leading business and financial adviser Grant Thornton UK LLP and multinational law firm Pinsent Masons have joined forces to support firms with how they can share data safely, efficiently and effectively across financial services in a push to enable open finance.

Pinsent Masons partners with Tech Nation’s Rising Stars competition

Multinational law firm Pinsent Masons has partnered with Tech Nations’ Rising Stars competition to support innovative early-stage scaleups across the UK.

People who viewed this press release also viewed

Show me all press releases

Pinsent Masons hires corporate crime and forensic investigations partner in South Africa

Multinational law firm Pinsent Masons has hired partner Edward James to bolster its corporate crime and investigations capabilities in South Africa.

Pinsent Masons boosts Paris office with energy double hire

Multinational law firm Pinsent Masons has ramped up its French energy expertise with hire of Sub-Saharan Africa-focused specialists Matthieu Le Roux and Olivier Bustin as partners in its Paris office.

Pinsent Masons appointed to Affinity Water’s legal panel

Multinational law firm Pinsent Masons has been appointed to Affinity Water’s legal panel.

For all media enquiries, including arranging an interview with one of our spokespeople, please contact the press office on

+44 (0)20 7418 8199 or 

Location contacts