This isn't groundbreaking research or anything. He does give a few examples of his rebound [http://en.wikipedia.org/wiki/Rebound_effect_(conservation)]. Paraphrased: while the average energy consumption to heat 1m^3 went from 365kWh in 1973 to 215 in 2005, energy devoted to heating rose 20%. Average temperatures in residential buildings rose from 19 to 21ºC.
He can't reasonably pin all these increases on 'Green Tech' alone though. (Maybe people don't wear fancy suits as much, instead opting for t-shirts. Voila more chauffage.) Cheap heat probably does make it easier for someone to kick up the thermostat, but so do other factors he neglects to mention.