Recommend good solar feasibility site??
In my neighbourhood, some of us want to look at the feasibility of using photovoltaic and flat-plate water heating -- with big questions about year-round use. Do you know of any Web sites that go into some depth of explaining the practicalities involved for various latitude zones (we're at about 50 degrees north)?
I realize that climate factors such as the annual cloud-cover situation also come into play. Would like to look into the daily light hours first, though.