I have found an interesting website from a group of people interested in sustainable power generation which is local and community owned called Local Power. The most interesting part on that website I found was their first project of a Buying Group for PV (photo voltaic) panels to achieve some savings in the purchase and installation of solar panel installations.
If you are thinking about installing solar panels on your roof and want to get an idea of cost have a look that the Buying Group page. But always keep in mind that the prices quoted in the tables on that page are discounted prices due to the involvement of the Buying Group but indicative non-discounted prices are shown in a few paragraphs above the pricing tables.
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