Study reveals plug-in hybrids to drive down CO2 emissions

Plug-in hybrid electric vehicles will reduce CO2 and nitrogen oxide emissions levels – but they are also expected to push up sulphur oxide emissions.
According to the team at Carnegie Mellon University the net emissions from the use of plug-in vehicles depends primarily on the efficiency of the entire vehicle fleet, charging strategy, battery pack capacity and driving patterns. They modelled the net emissions in two regional transmission operators under different scenarios for future power generation.