There's also the simple reality that houses with better energy ratings are worth more when they are sold. If you own a house, it's a good way to lower your bills and increase the value of your house. The only thing you know for sure when you pay hundreds per month for gas is that it goes out of the chimney. Over ten years, that adds up. Most houses you can probably do some sensible things that definitely earn themselves back in that kind of period while also increasing the value of your property. The inconvenience and financing tend to be the big obstacle. Add incentives to the mix and it becomes an easy choice in a lot of places.