Yeah so the database I mentioned above apparently is no longer online for some reason, it used to exist at http://openpv.nrel.gov but it is not available, its unclear if that is permanent or temporary- a doc from another part of the site kind of implies that they might charge for the data now, but if that's true, its not clear how you would even do that- but it was the only site that actually got me to someone actually willing to do a project around here.

If you get some real leads, please share!