BVG Associates for Wind Europe..
study of the space utilisation, technology costs and seabed and wind conditions in the North Seas concludes that by 2030, offshore wind in the North Seas could supply approximately 80% of Europe’s existing electricity demand at a maximum cost of EUR 65 per MWh. In total, this would entail 607GW of offshore wind power in the North Seas, of which around one seventh is in the Baltic Sea, two sevenths in the Atlantic Ocean and the rest in the North Sea. This is the economically viable potential. Today, less than 4% of this potential is utilised.
Though it’s gradually changing its power mix, Europe still relies on coal for a large share of its electricity. Today, coal, gas and nuclear power makes up 23%, 23% and 22% of European electricity generation, respectively. By 2030 this will fall to 14%, 18% and 22% under current policies
IEA, World Energy Outlook 2017 (NPS). . A lot of coal or lignite fired power plants will have to be replaced by renewables, if Europe is to have any chance of meeting its existing CO2 targets.