Walney Wind Farm

Walney Wind Farm. Located in the Irish Sea approximately 15 kilometres west of Barrow-in-Furness in Cumbria, it is one of the world's largest operational offshore wind farms. The facility was developed in phases, with the final extension completed in 2018, and is a major contributor to the United Kingdom's renewable energy targets. Owned by a consortium including Danish energy firm Ørsted and pension funds PKA and PensionDanmark, the wind farm represents a significant infrastructure investment in the North West England region.

Overview

The wind farm occupies a large area within the East Irish Sea Basin, situated in the shallow waters of the Morecambe Bay approaches. It is named after Walney Island, a nearby barrier island which is part of the Borough of Barrow-in-Furness. The project was constructed in three distinct phases: Walney 1, Walney 2, and the Walney Extension, which together form a single sprawling generation site. Its strategic location takes advantage of the strong and consistent wind resources prevalent in the Irish Sea, a region that hosts several other major wind farms like Barrow Offshore Wind Farm and West of Duddon Sands.

Development and construction

The initial phases, Walney 1 and Walney 2, were developed by DONG Energy (now Ørsted) and received consent from the Department of Energy and Climate Change in 2007. Construction of these first two phases began in 2010, utilizing Siemens Gamesa wind turbines, and were fully operational by 2012. The much larger Walney Extension project was approved in 2014, with Marine Management Organisation granting the necessary marine licenses. The extension's construction, undertaken by a joint venture including Van Oord and Smulders, was notable for installing the world's most powerful turbines at the time, supplied by MHI Vestas.

Technical specifications

Upon completion of the Walney Extension in 2018, the entire complex comprised 189 turbines with a combined installed capacity of 1,026 MW. The extension alone features 87 turbines, a mix of 40 MHI Vestas V164-8.0 MW models and 47 MHI Vestas V164-8.25 MW models. The earlier Walney 1 and Walney 2 phases consist of 102 Siemens Gamesa SWT-3.6-107 turbines. The generated electricity is transmitted to the national grid via subsea HVDC and HVAC export cables, making landfall at Heysham in Lancashire where it connects to a substation operated by National Grid plc.

Environmental impact and wildlife

The construction and operation of the wind farm are subject to ongoing environmental monitoring as stipulated by the The Crown Estate and the Department for Environment, Food and Rural Affairs. Key studies have focused on potential impacts on seabird populations, including species like the Black-legged Kittiwake and Northern Gannet, as the site is within important marine pathways. The project also conducts monitoring for marine mammals such as the Harbour Porpoise and has implemented measures to minimize disturbance during piling operations. The Royal Society for the Protection of Birds has been involved in reviewing environmental statements for the development.

Economic aspects and ownership

The wind farm represents a multi-billion pound investment in UK energy infrastructure. The ownership structure evolved after construction, with Ørsted selling 50% stakes in both the extension and the older phases to Danish pension funds PKA and PensionDanmark. The project benefits from the UK Government's Contracts for Difference subsidy scheme, guaranteeing a fixed price for its generated electricity. It supports numerous jobs in the operational and maintenance base at the Port of Barrow, contributing to the local economy in Cumbria and strengthening the United Kingdom's supply chain for the offshore wind sector. Category:Wind farms in England Category:Wind farms in the Irish Sea Category:Buildings and structures in Cumbria