Who actually funds Energy Probe Research Foundation?

I’ve been reading this series of articles about those who aren’t so sure about Anthropogenic Global Warming.

Note: I am not interested in arguing about AGW in this thread. Let’s keep things GQ.

That the articles call the people deniers when they’re really doubters could be press hyperbole, but I tried to check on the independence of Mr Solomon and his institutes, I see a lot of mention of funding from foundations, but no details of those foundations. So who really funds him? He appears to have credentials but I wonder.