World’s Largest Offshore Wind Farm Starts Construction

The world’s soon to be (2020) largest offshore wind farm has begun construction. The project, being developed by the largest offshore wind power developer – Orsted – is located 74.5 miles off the coast of Yorkshire, UK.

The wind farm is named Hornsea Project One. Hornsea Project Two will follow a few years later, and Hornsea Project Three is in early planning stages.

The 1.2GW project will be constructed of 174 7.0 MW turbines. The turbine model being installed – SWT-7.0-154 (PDF) – is manufactured by Siemens. The site will generate 4.1TWh of electricity per year.

According to Ørsted, an 8MW turbine – the MH1 by Vestas – generates enough electricity in one revolution of the turbine blades to power a house for 29 hours. Production isn’t necessarily proportional with turbine size, but if it just happened to be – these 7MW units will generate 25 hours of electricity with a single rotation.

The individual blades are 75 meters long and the total area covered when the blades spin is, 18,600m2 (4.6 acres).