Offshore wind investments in Europe doubled in 2015, according to new data from the European Wind Energy Association (EWEA).
Spending hit 13.3 billion euros ($14.45 billion) last year, with the European Union's total offshore wind capacity now more than 11 gigawatts (GW) of power.
"The record year for investments and installations in the offshore wind industry is a very promising sign and we now have 11GW of offshore capacity in the EU," Oliver Joy, spokesperson for the EWEA, said in a statement.
"There were several key factors behind these numbers, most notably strong growth in Germany and a backlog of turbines that were in the water in 2014 but only connected to the grid last year," Joy added.
Looking to 2016, Joy admitted that number of turbines being connected to the power infrastructure would dip, but that going forward, "stronger years are expected towards 2020. Turbine orders are up significantly and we will see the 13.3 billion euros final investment decisions taken this year begin to kick-in in the latter part of the decade."
The EWEA says that including sites under construction, Europe is home to 84 offshore wind farms in 11 countries.
Joy added that a question mark remained over how wind power would fare after 2020, and said that policymakers needed to set out "clear visions for offshore wind after 2020 to give investors and the industry certainty well into the future."