Figuring cost to charge my Prime

(Working) non networked, free chargers are getting harder and harder to find these days.
Without gripping about why, it's pretty easy to do the math after eyeballing what is happening at them ( free charging stations ).

 

Matches my first guessimate of the power bill for a month compared to last year. We're 12c @ kilowatt hour 760 miles driven 1/2 tank of gas used.
How many miles did you put on how much was electric operation?

 

KETOTEK Single Phase Energy Meter Din Rail Electricity Usage Monitor AC 40-300V 100A Voltmeter Ammeter Watt Kwh Frequency Power Meter Built-in CT 110V

smseace Circuit Breaker Box Distribution Protection Box, ABS Plastic Transparent Cover Waterproof Distribution Box IP65, for Indoor Wall Circuit Breaker (5 Way)

Ordered these on Amazon just now (KWH meter and a mounting box. It measures one leg @220V so should do what I want to keep track of a 220V 16amp charger.

 

What's really funny is seeing a Tesla monopolizing the charger, at the library near my house. Don't they get free charges at the Tesla charge stations for the first few years? I'm just saying that L2 charger is going to take a long time charging up a Tesla.

I do about 75% battery operations and fill my gas tank about once a month. I got about 1150 miles on that last tank, averaging 117 mpg. That's on a gen4 Prime, you should be able to do a lot better in a gen5, under the same conditions.

 

Also ordered and received a Vevor 16 amp charger with 220V input
VEVOR Level 2 Portable EV Charger, 16 Amp 240V, Electric Vehicle Charger with 28-Foot Charging Cable NEMA 10-30P Plug, 8/10/13/16A Adjustable Current Plug-in Home EV Charging Station for SAE J1772 EVs | VEVOR US
All the parts arrived, got it installed today.

while charging.
Charged after about a 10 mile trip.
so the charger is idling at 1.5 watt.
It also has an app but not much reason to use it.
Cord isn't quite as nice/flexible as the factory charger's but plenty long..
Kilowatt is cumulative and has a reset button.
Think I'll keep a note pad by the charger.
Longer trips will tell more but at 12 cents a kilowatt hour. 43 cents to go an estimated10 miles.
I probably have $300 total in this charging set up. (plus my labor) 30 Amp circuit, about 40' of 10-2 wire.
hmm can't upload pics, bummer.