I pay approximately (it varies with amount used and the seasons) $1.16 per kwh.
16 kwh x $1.16 per kwh = $18.56 to charge the battery.
$1.16 per kwh seems way too much. Should be 0.116 per kwh x 10 hours to charge=$1.16 to charge battery. Chargers not being 100% efficient it would probably be 15% more or $1.33 to charge a depleted battery pack.
I still would not buy a Volt, maybe a Prius. At least it's been around for a long time and see them everywhere. Electricity to charge a plug in Volt has to come from a powerplant that uses coal or oil most likely. Not much in those batteries are recyclable. Lithium has to be mined and energy to make the batteries negates most environmental advantages of electric vehicles. Who pays for the rebates the government is giving the buyer, the damn tax payers....most of us working poor.