About the project

Generating clean electricity for almost 600,000 UK homes

Walney Extension offshore wind farm is located approx. 19km west of Barrow-in-Furness in Cumbria, off the North-West coast of England.


Walney Extension map

Situated next to the existing Walney and West of Duddon Sands Offshore Wind Farms, Walney Extension is made up of 87 turbines and has a total capacity of 659 MW, enough to power almost 600,000 homes in the UK. The project is a shared-ownership project between Ørsted and our partners PFA (25%) and PKA (25%).


Read the project summary

Walney Extension Turbines

The 87 turbines are split between two leading manufacturers, 40 x MHI-Vestas 8.25 MW turbines and 47 x Siemens Gamesa 7 MW turbines.


Technical project details

Project timeline

The project was inaugurated on 6 September 2018 and now generates clean electricity for nearly 600,000 homes. Once the largest wind farm in the world, it was overtaken by Hornsea One offshore wind farm in 2020. 

Offshore construction commenced in February 2017
Onshore construction commenced.
Development consent granted.
Public community consultation events Application for Development Consent Order (DCO) is submitted and accepted by Planning Inspectorate for progression into Examination.

The Crown Estate Award an Agreement for Lease to extend the Walney Offshore Wind Farm by a further 750MW over a 145 km2 area.
Scoping phase, stakeholder consultation, environmental surveys and impact assessment commenced.

Our wind farms

Learn about our offshore wind farms that are in development, in construction, and the ones that are operational in the UK.

Contact us

If you have any questions about Walney Extension, please get in touch.


With Walney Extension offshore wind farm now open, we provide a summary of the project and take a closer look at the benefits it has and will continue to generate.