Illustrations below summarizes my Volts performance. At home I charge with the 120V EVSE that come with the car. At work my employeer provides a 240V charging station that is supplied by a photovoltaic energy storage system. The EVSE is manufactured by Clipper Creek. On average I get anywhere from 31 to 46 miles on electric. And I average 3 to 3.45 miles per kWh. Monitoring the DC bus current on my daily commute, I can recover 10 to 20 percent of consumed energy from regenerative braking. The greatest performance.... going from $400+ per month in gas for my truck, to about $50 per month in electricity and gas for my Volt.