via GeoLounge (check out this link to see some sample maps):
Haringey Council (located in London, England), is using heat mapping to highlight energy inefficient homes within their jurisdiction. The city council hired an aircraft fitted with a thermal imager to fly over all the homes in the jurisdiction to capture heat loss. The houses were then color coded based on a heat loss scale with bright red for the highest level of heat loss and bright blue indicating the lowest loss of heat. All of the data is available online for the public to see. Any visitor to the Haringey Interactive Heat Loss Map can hover their mouse over individual homes to get the address. The hope of the council is that a public display will shame some homeowners into insulating their homes to bring down heat loss. The original thermal mapping was down back in 2000 but new flights were taken this past March and now a 2000 and 2007 version of the heat loss map are available from the Home Heat Loss page of the Haringey Council web site. If the side by side comparison (see below) is any indicator, the heat loss map is making a difference in the reduction of energy loss in at least some of the homes. The mapping and processing was done by www.hotmapping.co.uk.