RSS feed problem

I can’t get the feed to work right. My site link is http://www.green-energy-info.info.

If I click on the feed symbol ar the bottom of the page I get an error that says You must provide a feed uri
Error 400

I get the same thing if I click on the feed symbol in the address bar. When I mouse over the one at the bottom of the page it shows me a url of

http://green-energy-info.info/feed/ when I take this link and try to submit it at like feedage they say it’s not a valid feed.

Any ideas?
Scott