TMC is an independent, primarily volunteer organization that relies on ad revenue to cover its operating costs. Please consider whitelisting TMC on your ad blocker and becoming a Supporting Member. For more info: Support TMC

Calculating how much per year in electricity?

Discussion in 'Model 3: Battery & Charging' started by MatildaModel3, Jul 18, 2018.

  1. MatildaModel3

    MatildaModel3 Member

    Apr 15, 2017
    I'm trying to figure out how to calculate my cost here. I will have a new model 3 with the large battery pack arriving soon...

    Let's assume I drive about 9000 miles per year, and electricity is about 11c/kwh. What's the simple math to figure out how much I'll be spending in electricity?

    Thanks for the help.
  2. MarkinArch

    MarkinArch 1st S.A.TX Non Owner TM3 Delivery

    Jan 2, 2018
    San Antonio, Texas
    Easy method that doesn't take into account losses at the outlet or vampire drain: Divide the average miles/kwh you expect into 9,000 miles and multiply by $0.11.

    Using my average of 4.2 miles/ kwh it would be about $235 a year.
  3. PoitNarf

    PoitNarf My dog's breath smells like dog food

    Jun 7, 2016
    #3 PoitNarf, Jul 18, 2018
    Last edited: Jul 18, 2018
    Yeah figure an average of around 240Wh/mi (could be in the 220s, totally depends on your driving style). So multiply that by the amount of miles you’ll average in a year. So your 9000 miles a year multiplied by 240Wh/mi gets you 2160kWh. At $0.11 per kWh that would be $237.60. Maybe factor in 15% loss or so due to vampire drain and charging inefficiencies and you’re looking at less than $275 a year. Not bad at all. The Model 3 is shockingly efficient.
  4. Glamisduner

    Glamisduner Active Member

    Aug 2, 2017
    Escondido, CA
    #4 Glamisduner, Jul 18, 2018
    Last edited: Jul 18, 2018
    29Kwh per 100 miles = .29Kwh hours per mile. (AWD but I'm getting sport rims too?) so I'm not sure if this is correct or if this number is even realistic?
    Tesla Model 3 Long Range All-Wheel Drive & Performance Editions Get Official EPA Ratings | CleanTechnica

    52 weeks * 5 days a week(daily commute) * 82miles = 21,320.
    Probably 1/2 that on weekends on average. = 52 * 2 * 41 = 4,264

    21320 + 4264 = 25,584 miles per year (sounds about right from mileage on my last car, maybe a little short due to road trips).
    25,584 * .29 = 7,419.36 Kwh
    7,419.36Kwh * 1.10 (10% charging loss) = 8160.9
    8160.9 * $0.27/Kwh = about $2203
    or for a more accurate number.
    ($0.47+$0.23) / 2 = .35(average lowest and highest power rates)
    8160.9 * $0.35 = $2856.315

    Using these numbers my ford focus (34mpg was my average)
    25584 / 34 = 752.47 gallons.
    $3.50 a gallon = $2633.64

    So not too much more expensive in fuel costs to drive a nice tesla than a ford focus.

    Also. If I can do TOU -EV Plan.
    8160.9 * $0.09 = $734.48 (Super Off Peak Pricing) + $16 / month additional fee = $192 = $926.48

    But I expect my Power bill will double elsewhere (running AC while at home) (maybe 50% more than now) So at least another $800 or so.

Share This Page

  • About Us

    Formed in 2006, Tesla Motors Club (TMC) was the first independent online Tesla community. Today it remains the largest and most dynamic community of Tesla enthusiasts. Learn more.
  • Do you value your experience at TMC? Consider becoming a Supporting Member of Tesla Motors Club. As a thank you for your contribution, you'll get nearly no ads in the Community and Groups sections. Additional perks are available depending on the level of contribution. Please visit the Account Upgrades page for more details.