Study finds PHEVs will reduce net emissions of CO2 and NOx; upward pressure on SO2

A team at Carnegie Mellon University has modeled the net emissions in two regional transmission operators (PJM and NYISO) from PHEVs under different scenarios for future power generation; different size battery packs; charging strategies (home, work and smart); and PHEV fleet percentages between 0.4 and 50%. Scott Peterson, J. F. Whitacre and Jay Apt found that compared to 2005 gasoline fleet efficiency levels, all charging strategies and CD mode efficiencies yield reduction of CO2 emissions.