I think that's the problem with environmental solutions at the moment. I would love to put some in as I have a conscience about that sort of thing, but to retro-fit is too expensive, even including what little governement subsidies are available.

Personally, if I was buying a new build, environmental energy solutions would be a factor when I was looking to purchase. I would consider it a serious added bonus, and it would be very attractive.

I'm sure I would be in the minority, but I reckon it's becoming more "fashionable" as green issues beomce more personal, so will be a factor in years to come. Obviously if you approach it from a "cost saving for the purchaser" point of view, it's going to be attractive to many more people!

You on about individual stuff like solar roof panels, and ground source heat pumps, or larger stuff like Paul suggests?

Interesting stuff though......