We have found it easy enough to get solar pv quotes, but each time we think we've found a company (via website) that does (or can look at for us) roof wind power, solar thermal and rainwater harvesting they always say "oh yeh, we meant to remove that from the website - we dont do that anymore" (has happened four times!) We are in North West if it makes a difference, detached house surrounded by detached in a squarish site of about .5 an acre