I can help with the clean energy and sustainability side of things. I currently have 14 solar panels currently in operation which I built by hand. I use them to charge batteries/run inverters and feed into the grid. The reason I mention what I've already done is to make sure it is clear that this isn't a risky investment, it's a proven design. Requirements are fairly minimal: miter saw, angle aluminum, glass panes, liquid silicon, tabbing/bus/power wire and the solar cells themselves.
The plan is to make all the designs open source. I was hoping that we'd be able to get videos, instructions, CAD files, and other materials done before X-mas, but that's not going to happen. I get back in country X-mas eve, and I'll continue working on preparing for release. Until then I'll have virtually no Internet access, but I'll reply to any e-mails eventually.
As far as looking for a project like this, I think about the closest you're going to find is hackerspaces. The ability to sleep at hackert0wn is something which, I feel, really sets it apart from previous projects. There's also the scale of this project, but having crash space available for rent will bring in the people who are extremely passionate about building (or breaking) things. It'll help build the culture as a place where the people go there because they're excited to work on things, not because they're bored. It's not that this one feature will automatically solve the challenge of building a culture, nor do I mean to imply that it can't be done without crash space, but it's a huge benefit.
From a financial (aka investor) point of view, having a store is also very important, as it help bring in money to sustain the entire project. It's also important for people to be able to get heat shrink tubing at 2am when they get this great idea for some project. The cost of this project is extremely large, and even if there were some angel investor who took care of the entire bill to get started, there's still monthly costs. So every little thing to show that we can at least break even is important.