About the project

Now inaugurated, Hornsea One is the largest offshore wind farm in the world, producing enough energy to power well over one million homes.

Hornsea One offshore wind farm

Located off the Yorkshire coast, Hornsea One spans a huge area of approximately 407 square kilometres, which is over five times the size of the city of Hull. The offshore wind farm uses 7 megawatt (MW) wind turbines, with each one 190 metres tall – larger than the Humber Bridge concrete towers.

Horsesea Project One
Project timeline
2020
2018-2020
2016-2019
2015
2014
2012-2013
2011
2010
Onshore construction.
DONG Energy takes over full ownership of Hornsea Project One from SMart Wind.

Hornsea Project One awarded a FID (Final Investment Decision) Enabling Contract for Difference* by DECC**.

Development Consent granted by Secretary of State.

*Contracts for Difference (CfD): A Contract for Difference (CFD) is a private law contract between a low carbon electricity generator (i.e. Hornsea Project One) and the Low Carbon Contracts Company (LCCC), a government-owned company (source).

**DECC: Stands for Department of Energy and Climate Change dissolved in July 2016 and has been superseded by the Department for Business, Energy and Industrial Strategy (BEIS).


Consultation events in local communities took place to discuss environmental and local impact.
DONG Energy acquires a 33.3% stake in Hornsea Project One from SMart Wind.

SMart Wind Ltd (a 50/50 joint venture between Mainstream Renewable Power and Siemens
Project Ventures GmbH) is awarded the ’Hornsea Zone*’ by the Crown Estate as part of the Offshore Wind Round 3 Programme.

*In 2016, the Hornsea Zone was disbanded into project specific Agreements for Leases.

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