Nordsee Ost Cracks 1 TWh Mark

The 295MW Nordsee Ost offshore wind farm has generated one million megawatt-hours of electricity almost exactly a year after its full commissioning on 8 May 2015, RWE Innogy reports.

“One year after the official opening of our wind farm, we have cracked the one million mark. I am proud because it shows that our systems can meet the planned targets and our operating team on Heligoland is doing a really good job,” said Thomas Johann, operations manager for the Nordsee Ost.

Nordsee Ost is located around 35 kilometres to the north-east of the island of Helgoland in the German North Sea region. It comprises 48 6.2M 126 Senvion turbines.

The power generated by the wind turbines is transferred to a transformer substation, where the energy generated at a medium voltage of 33 kV is transformed to a transmission voltage of 155 kV.

The electricity is then transmitted through two high-voltage submarine cables to TenneT’s HelWin alpha converter platform.

This is where the AC voltage is converted to 250 kV DC voltage and transported to the nearest onshore grid access point at Büttel. From here, the power generated at sea is transmitted to the consumers.

Nordsee Ost can provide enough electricity to cover the needs of some 320,000 average German households.

This article was amended on 16 May 2016. Due to an editing error, the original article stated that Nordsee One generated one million terawatt-hours instead of one million megawatt-hours.