Empirical charging behavior of plug-in hybrid electric vehicles

• We analyze over 10,000 PHEV with a total of 4.3 million driving days. propose new method to detect the frequency individual charging behavior. Users avoid high share nights without charging. Not overnight has large effect on electric driving. Intense drivers have km per year low shares Plug-in hybrid vehicles (PHEV) offer greenhouse gas emission reduction in car usage if charged frequently and driven mainly electricity. However, little is known about actual behavior owners. Here, we investigate daily 10,488 Chevrolet Volt days US Canada. from utility factor distance travelled. Our results show that no occurs typically 3–7% user additional happens 20–26% also relation between for different groups should not be used as only measure environmental performance PHEVs.