Just as a really rough estimate:
Let’s say you install a 5kW charger and use it 8 hours a week. That’s 40kWh a week. Or 160 kWh a month.
Obviously you should look at a power bill and see how much you’re utility is charging per kWh. Let’s just say it’s $0.15 / kWh.
Using the above numbers that equates to $24 a month. Hope it won’t break the “cheapskate” partners bank.
For those who don't actually have an electric car yet, this is the most realistic use case at 240 volts.
No matter how long you're plugged in, you'll probably only be charging for an hour or two daily. Unless you drive hundreds of miles to get to work, your battery won't be empty.
Bear in mind that higher amperage charges faster, but costs the same. Say you drove 30 miles to work and used 1 gallon of gas. Filling your tank will cost the same no matter how you pump the gas. Electric cars are no different. Instead of using a gallon of gas, you used 10 kWh of electricity. Filling your battery will cost whatever your power company charges for 10 kWh regardless of how you're plugged in or how fast you charge.
As others have said in a more roundabout way, you're asking the wrong question and providing the wrong information. The car will pull the same amount of power through all configurations. What changes is how long it takes to do it Everyone will highly recommend the 240v configuration (because it's by far the better choice) but if you're only driving 5 or 10 miles to work, feel free use a 110 outlet. Just plug in when you get to work and you'll be fully charged by the end of the day. Anything more than 20 miles and you should definitely consider 240v because you won't be fully charged after 8 hours.
Anyway, we need to know how far you drive if we're going to help you figure this out. As a rough guess, take car's range and divide it by the battery size. Next, divide the number of miles you drive to work by that number. That gives you how many kWh you'll use during your daily drive in a perfect world. I'd adjust it (upward in most cases) by 10 to 20% to account for real world driving. Once you have that, round it up to the nearest whole number and multiply it by the cost of electricity where you are. That's how much you should expect the charging to cost per day.
Since you already have a Tesla, you can skip the guesstimate and just pull how many kWh you used from the trip odometer.