"The renewable industry is here to stay, the investment community would not get involved otherwise and I wouldn't have said that maybe three years ago," said Nick Gardiner, director of the Energy & Utilities Group, Fortis, United Kingdom.

Fortis, Lehmeyer International, EIB and HSH Nordbank among many others are in "an asset grab for attractive wind farms," said John Dunlop, HSH Nordbank AG, United Kingdom.

The market has been flooded in just the past year or so with developers selling wind farms and banks and investors buying. In 2006, a little more than $12 million was spent in Europe on wind energy installation and the number is expected to continue increasing.

There are many risks associated with investing in wind power, namely whether the wind will continue to blow enough to make a profit. But, Gardiner said, there are ways to mitigate risks, including setting pay-out prices depending on how much energy generation is predicted.