|Click for photo credit.|
According to the article, the tall buildings in New York represent just 2% of the total number of buildings in the city, but use 45% of the energy. Therefore, it makes sense to focus energy savings efforts on these buildings.
But the way we built modernist buildings--full of glass facings and tall public spaces--is highly inefficient. The old workhorse buildings, after renovations, seem to be doing the best job with energy conservation.