Wind farms in Wales 'could generate £2.3bn,' says report
30 January 2013 Last updated at 19:30 GMT
An average of 2,000 jobs a year could be created until 2050 and £2.3bn injected into the Welsh economy by onshore wind farms, it is claimed.
That is the forecast from the first report looking at the economic impact of wind energy in Wales.
The research by Regeneris Consulting and Cardiff Business School is based on how much of the money spent until now on wind farms has stayed in Wales.
But it warns delays to approving and building wind farms will hamper this.
Economics correspondent Sarah Dickins reports.