The EIA just released data on 2007 that shows total electricity generation increased by 2.5 percent in 2007, but total CO2 emissions from the electric sector increased by 3 percent. That’s right: the electricity sector, already the single largest contributor to U.S. CO2 emissions, is increasing its CO2 intensity.

Intriguingly, this increase has come about despite a 25 billion kWh increase in wind and nuclear generation in 2007, as the gains from those zero-carbon sources were offset by a 40 billion kWh decrease in production from hydro-electric facilities.