Hi, from Montreal here. I have a level 2 charger so I can't answer your question about 110V charger, but I know before I had my level 2 installed, it was using a bit more electricity using the 110V charger that came with my car. I know because we have the "smart" meter here so I can check my home electricity consumption by the hour. (Unfortunately the detailed hourly breakdown won't let me go back 2 months prior, so I could not check for sure how much more it was using. I guess-timate about 10-15% more). So right now, my electricity comes to about 8.2¢ per kwh. And I value charge my car from 2am-5am, and I use about 8 to 8.5 kwh more electricity during this period, so I assume this is how much kwh I use to charge my car (from empty to full charge, 2019 model). So it costs be about 65 to 70¢ per night to charge my car. Or about $20 a month. I used to fill up my previous car (a small SUV), about $60 a week, or $240 a month. Now I fill up once a month, so $60 + $20 more for electricty = $160 savings a month. This is the summer rate though. We'll see this winter.