You won't notice your electricity bill go up much depending on how much driving you do. Assuming you drive 10 miles a day. That's about 3kWh of battery consumption with less efficient driving. That means after charging losses, about 3.5kWh of power from your be home. Assuming $0.087/kWh (Ontario off peak) you would be paying $0.3 a day and $8.82 a month if you drive everyday.
The Gen 1 takes about 13kWh to charge from empty. You can program it to charge at certain times of a day to take advantage of off peak electricity.
The Gen 1 takes about 13kWh to charge from empty. You can program it to charge at certain times of a day to take advantage of off peak electricity.