During the first half of 2017, offshore wind parks in the German part of the North Sea produced 7.77 terawatt hours of electricity, or 50% more than in the same period a year earlier, transmission system operator TenneT said.

“The flow of energy from the North Sea has now reached a significant 16.5% share of overall wind energy generation in Germany and thus represents almost a sixth of the total wind power output,” says TenneT management board member Lex Hartman.