In the last post, I wrote about peoplefund.it. From the same stable, there is [update: was] energyshare.com. It’s not really a crowd-funding site, more of a place for forming an online community of supporters for your energy project and sharing experience with each other. But there is [update: was] also the energyshare fund, which rewards a few community projects each year.
Worth keeping an eye on is Microgenius. Its aim is to bring together people who want to invest in green energy with community energy projects.