An offshore wind farm located in the German North Sea has supplied its first power to the grid.

A total of 21 turbines have so far been installed in the Sandbank Offshore Wind Farm, with full commissioning currently underway, according to Vattenfall.

The developer of the €1.2 billion (£1bn) site, which will have 72 turbines in total, added the wind farm is expected to be fully connected to the grid and start delivering at full capacity by spring 2017.

The site will have a capacity of 288MW and generate enough power to supply 400,000 homes and reduce more than 700,000 tonnes of carbon emissions per year.

Hergen Stolle, Responsible Package Manager for Wind Turbines said: “The commissioning of the first wind turbines underlines the fact that it is possible to start with the generation of electricity shortly after the erection phase. It proves that offshore technology is becoming more and mature.”