Charging Costs Guide
Tesla Charging
Costs in Austin
The quick answer
How much does it cost to charge a Tesla in Austin?
Energy you pay for times your price per kWh. Hypothetically, 36 kWh into the battery at 90 percent efficiency is 40 kWh purchased; at an assumed $0.15 per kWh that is $6.00 at home. The same 40 kWh billed at an assumed $0.40 per kWh at a Supercharger is $16.00. Both rates are examples, not tariffs. Your utility plan or the live charger price decides the real cost.
Jump to the calculatorThe formula, how home and public prices compare, why your utility territory and actual bill matter, and a calculator that shares your exact inputs as a link.
Sources checked October 15, 2026
The Formula
Energy Times Price
Every charging cost estimate comes down to two numbers: how much energy you buy and what you pay per unit. Energy delivered from the charger is usually higher than the energy that reaches the battery, so the formula divides by an efficiency figure.
01
Energy to the battery
battery kWh × (charge to % minus charge from %)
02
Energy you pay for
energy to the battery ÷ charging efficiency
03
Cost of the charge
energy you pay for × your price per kWh
04
Cost per mile
cost of the charge ÷ miles of range added
Hypothetical home charge
- 36 kWh delivered to the battery
- 36 ÷ 0.90 = 40 kWh purchased
- 40 × $0.15 = $6.00
$0.15 per kWh is an assumed rate for illustration. It excludes fixed monthly utility charges.
Hypothetical Supercharger session
- 40 kWh billed
- 40 × $0.40 = $16.00
- Plus any idle or congestion fees
$0.40 per kWh is an assumed price. Billed energy is not necessarily the same energy that ends up in the battery.
Home vs Public
Where You Plug In Changes the Price
The same car and the same miles can cost very different amounts depending on where you charge. Austin Energy figures below are its listed public charging prices as of October 15, 2026; they can change.
| Where | How it is priced | What to watch | Access |
|---|---|---|---|
| Home, your utility plan | Your plan's energy charge per kWh, plus delivery and fixed line items on the bill | Usually lowest per kWh, but varies by provider, plan, tier and time | Only with a home or approved outlet or charger |
| Austin Energy public Level 2 | $0.12203 per kWh, as listed by Austin Energy, no subscription | Public port price only. Not a home tariff and not a residential rate | Austin Energy network ports; parking rules vary by site |
| Austin Energy public DC fast | $0.23616 per minute, billed plug in to plug out | Per minute, so cost per kWh depends on how fast your car charges | Connector or adapter compatibility required |
| Tesla Supercharger | Shown in the vehicle and Tesla app; varies by site, time and occupancy | Idle or congestion fees may apply | Check live pricing before you plug in |
| Other public networks | Set by each network; may be per kWh, per minute or per session | Session, parking or membership fees can apply | App or account often required |
Austin Energy also offers eligible customers 50 percent of the purchase price of a qualifying home charging station, up to $500, with Power Partner EV enrollment required. Details and eligibility are on our Austin Energy rebates page.
Your Utility
Your Bill Is the Real Rate
Austin Energy does not serve every Central Texas address. Depending on where you live you may be served by a different municipal utility, a cooperative, or a retail electricity provider, each with its own plans.
Home pricing is variable. Energy charges can depend on usage tiers, time of day, season and plan, and the bill adds delivery and fixed line items. Adding a car's charging can move you into a different tier.
- Find your provider and plan name on a recent bill.
- Note the per kWh energy charges and any tiers or time windows.
- Ignore fixed monthly fees for a per charge estimate; they apply with or without the car.
- Enter the resulting price in the calculator below, then compare against next month's actual bill.
Reconcile a Session
Receipt vs Energy Added
A charging receipt shows billed energy and fees. The change in battery percentage can estimate stored energy if you know the usable capacity, but it is not a separate energy meter. Compare those quantities cautiously: charging losses, cabin cooling, battery conditioning and measurement uncertainty can all affect the difference.
| Number | Where it comes from | Use it for |
|---|---|---|
| Billed kWh and total | Charger receipt, utility bill or app session history | What you paid for the session |
| Estimated energy added to the battery | Estimated current usable battery kWh times the change in charge percent | Approximate stored energy, not a measured charging efficiency |
| Average power at the billing meter | Metered session kWh divided by elapsed charging hours | A rough time estimate using the same energy measurement point |
| Energy use per mile | The car's Energy app for your recent driving | Turning battery kWh into miles |
Percent based battery estimates are approximate. Treat the reconciliation as a sanity check, not an audit.
Reconcile one session
- 01Write down the start and end charge percent shown in the car.
- 02Multiply your usable battery kWh by the percent change to get energy added.
- 03Read billed kWh and the total from the receipt or session history.
- 04Divide the total by energy added for cost per battery kWh.
- 05Divide estimated energy added by billed kWh. One minus that ratio is an estimated gap, not a measured efficiency: auxiliary loads and capacity uncertainty also contribute.
Estimate charge time from observed power
- 01Use the average input power from a comparable metered session, not a charger nameplate maximum.
- 02Divide the kWh you expect to buy by average power measured at the same point.
- 03Add margin. Power can taper with state of charge and battery temperature.
- 04Compare against the time the car itself displays, which updates as conditions change.
Hypothetical reconciliation
Public session, assumed price
- Receipt: 50 kWh billed, total $20.00
- Battery: 75 kWh × (80% − 20%) = 45 kWh added
- $20.00 ÷ 45 = $0.444 per battery kWh
- 45 ÷ 50 = 0.90, implied loss 10%
All figures are invented for illustration. The $0.40 per billed kWh implied here is an assumption, not a quoted price at any site.
Hypothetical time estimate
Home Level 2, observed power
- Assumed average input power at the billing meter: 7.6 kW
- Energy to buy: 50 kWh
- 50 ÷ 7.6 = 6.6 hours, before margin
Assumes constant power for the whole session. It is arithmetic, not a forecast of your charger, circuit or car.
Sources checked October 15, 2026
Charging Cost Calculator
Your Inputs
Default $0.15 is illustrative, not a tariff. Use your bill's marginal price or the charger's posted per kWh price.
Your estimate of usable capacity. Varies by build, pack and age; no model name guarantees a figure.
Equal to the start is valid and costs $0.00.
Miles per kWh drawn from the battery, as your car shows it. Not an EPA wall-to-wheels figure, which already includes charging loss.
Assumed share of purchased energy that never reaches the battery. Must be below 100.
Your Estimate
Cost to charge 20% to 80%
$7.50
- 45 kWh
- Energy added to battery
- 50 kWh
- Energy bought from charger
- $12.50
- Cost of a full 0 to 100% charge
- 158 mi
- Estimated range added
- $0.048
- Cost per mile
How this was calculated
- 01
Energy to the battery
battery × (to − from) ÷ 100
75 × (80 − 20) ÷ 100 = 45 kWh
- 02
Energy you pay for
battery energy ÷ (1 − loss ÷ 100)
45 ÷ (1 − 10 ÷ 100) = 50 kWh
- 03
Cost of the charge
energy bought × price per kWh
50 × $0.15 = $7.50
- 04
Range and cost per mile
battery energy × mi/kWh; cost ÷ miles
45 × 3.5 = 157.5 mi; $7.50 ÷ 157.5 = $0.048
Energy cost only. Excludes the car's purchase price, financing, insurance, charger installation, depreciation, taxes, fixed monthly utility fees, idle or session fees and parking. Planning estimate, not a forecast of any future rate.
Reference prices, source checked
Static figures we read from official pages on October 15, 2026. They are not a live feed and never overwrite your inputs; use a button above only if the price fits your situation.
$0.12203/kWh
AE public Level 2
Reference snapshot checked October 15, 2026
Dated reference, not a live price
Check the source for current prices and enter what you actually pay. Your inputs and shared links are not changed.
Review interval: 90 days. Prices may change sooner.
$0.23616/min
AE public DC fast
Reference snapshot checked October 15, 2026
Dated reference, not a live price
Check the source for current prices and enter what you actually pay. Your inputs and shared links are not changed.
Review interval: 90 days. Prices may change sooner.
Tiered
AE residential, FY 2026-27
Reference snapshot checked October 15, 2026
Dated reference, not a live price
Check the source for current prices and enter what you actually pay. Your inputs and shared links are not changed.
Review interval: 90 days. Prices may change sooner.
Default worked example
- 75 kWh × (80 − 20) ÷ 100 = 45 kWh to the battery
- 45 ÷ (1 − 10 ÷ 100) = 50 kWh bought
- 50 × $0.15 = $7.50
- Electricity rate $0.15 / kWh is illustrative, not a verified utility rate or tariff.
- Battery 75 kWh is an example usable capacity estimate, not a guarantee for any model name.
- Efficiency 3.5 mi / kWh is battery consumption; pairing it with a separate loss figure avoids counting charging loss twice.
- Charging losses 10%, an assumed share of purchased energy.
Sources
- Austin Energy: Current public charging rates (EVerything Charging)
- Austin Energy: Home charging
- Austin Energy: Power Partner EV eligibility
- Tesla Support: Charging
- Tesla Support: Supercharging
- Tesla Support: Range
- Austin Energy: City of Austin Utilities Rates and Fees FY 2026-2027 (PDF)
- Tesla: Model 3, Model Y, Model S, Model X specifications (battery and range)
Public price sources checked October 15, 2026. Every input is editable, so enter the numbers you actually pay. Independent community estimate, not affiliated with Tesla or any utility.
Member charging evidence
No documented member case published yet
Every figure on this page is a hypothetical example or an official published price. None of it is a member record. When an owner shares real bills that pass review, it will appear here with its period, method and review date.
What a usable record needs
- Your own bills, receipts or app screens for the period, with account numbers, addresses and VIN redacted before anyone else sees them.
- Plan or rate name, price basis (per kWh, per minute or per session) and units written out.
- Each value marked observed or estimated. Estimates are labeled, never blended into observed totals.
- Written consent to publish, and the display name you choose: initials, an alias, or your name.
Common Questions
Charging Cost FAQ
- How much does it cost to charge a Tesla at home in Austin?
- Multiply the energy you buy by your actual price per kWh. As a hypothetical, 36 kWh delivered to the battery at 90 percent efficiency is 40 kWh purchased, and at an assumed $0.15 per kWh that is $6.00. The $0.15 figure is an illustration, not an Austin Energy tariff. Your bill's energy charges, tiers and fixed fees decide the real number.
- Is $0.12203 per kWh the Austin Energy home rate?
- No. Austin Energy lists $0.12203 per kWh for its public Level 2 charging ports. That is a public charging price, not a general residential tariff. Home electricity is billed under your own plan and line items.
- What is the Austin Energy residential rate per kWh?
- There is no single number. The FY 2026-27 rate schedule bills inside-city residential energy in tiers ($0.04872, $0.05395, $0.07901 and $0.11428 per kWh as usage rises) plus per kWh pass-throughs (Power Supply Adjustment $0.03912, Regulatory $0.01799, Community Benefit $0.01097) and a separate $17.35 fixed monthly charge. Extra kWh for charging are billed at whatever tier your usage reaches, so the marginal price can differ from your bill's average. Outside-city customers have different rates.
- Why not put the DC fast per-minute price into the per kWh box?
- Austin Energy DC fast charging is $0.23616 per minute from plug in to plug out, not per kWh. A 30 minute session is 30 × $0.23616 = $7.0848, about $7.08, however much energy your car accepts. Divide by the kWh on your receipt if you want an effective per kWh figure.
- Why does a Supercharger session cost more than home charging?
- Public fast charging prices are set per site and can change by time and occupancy, and idle fees may apply. As a hypothetical, 40 kWh billed at an assumed $0.40 per kWh is $16.00. Billed energy is not necessarily the same as the energy that ends up in the battery.
- Is this the same as total cost of ownership?
- No. This page covers electricity only. Insurance, registration and the Texas EV fee, tires, depreciation and financing are in the separate Tesla Ownership Costs in Central Texas guide.
- Why does my receipt show more kWh than my battery gained?
- Some purchased energy does not reach the battery. As a hypothetical, a receipt for 50 kWh while the battery gained 45 kWh implies about 10 percent loss for that session, so cost per battery kWh is the total divided by 45, not 50.
Want to compare your charging cost against gas, or find the cheapest places to plug in around town? Join the Tesla Owners Club of Austin and tap into the experience of owners across Central Texas.