The financial community is able to invest this amount, the association adds. However, changing regulatory frameworks in the UK and Germany has led to uncertainty.

"By undermining investment stability, governments are putting green growth, jobs and a world-leading European industry at risk," said Thomas Becker, EWEA CEO, at the report launch at EWEA OFFSHORE 2013.

"Stable national frameworks and a binding EU renewable energy target for 2030 will be a green light to investors and ensure the industry continues to flourish," he added.

The report, "Where's the money coming from? Financing offshore wind farms" is published by EWEA with research from Ernst and Young. A summary can be found here.