Sorry if I offended any reader with this clearly butch, tough guy language, but there's a new development on the glass front that has me all worked up. In another year or so there will be a type of glass entering the market that will make buildings, from an insulation perspective, behave as if they don't have any windows. Ginormous energy and money savings await those who begin installing these windows on new buildings, or replacing their old windows.
These things could play a major part in a classic pincer maneuver on old energy use as renewables put pressure on coal plants from one side, while super-efficient materials dramatically reduce new buildings' energy requirements.