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EV Charging Cost Calculator (United States)

Calculate per-session and annual EV charging cost in 2026. Free EV charging cost calculator covering Level 1, Level 2, DC fast tariffs and solar offset.

EV Charging Calculator

Energy drawn from the source
50 kWh
Time to reach target
4 h 21 min
Cost on grid only
$8
Cost after solar offset
$4
Saving from solar: $4
Level 1 (1.4 kW): overnight only — adds ~5 mi/h.
Level 2 (7-11 kW): full home charge ~6-10 h.
DC fast (50-350 kW): 20→80% in 20-45 min, tapers above 80%.

What this calculator tells you

This calculator returns five numbers that together describe the full cost of running an electric vehicle on U.S. residential electricity:

  1. Energy drawn from the wall (kWh) — what your utility actually meters and bills you for, including charging losses
  2. Charge time — hours and minutes from the entered start state of charge to the target
  3. Per-session grid cost (USD) — the dollar amount on your electricity bill for one charge with no solar
  4. Per-session cost after solar offset — what the same charge costs after accounting for the share covered by your rooftop array
  5. Solar savings — the dollar value of self-consumed PV at retail rate

Changing the tariff input shows you exactly how much a time-of-use rate, an EV-specific plan, or a public DC fast station shifts the cost. The math is linear in tariff, so you can quickly compare home charging at $0.16/kWh against a $0.55/kWh EVgo session or a $0.07/kWh Octopus-style overnight EV plan.

How the cost math works

energy_to_battery (kWh) = battery_kwh × (target% - start%) / 100
energy_drawn (kWh)      = energy_to_battery / efficiency
charge_cost ($)         = energy_drawn × tariff_per_kwh
solar_savings ($)       = charge_cost × (solar_pct / 100)
final_cost ($)          = charge_cost − solar_savings

Worked example for a 75 kWh battery, 20→80%, 11.5 kW Level 2, $0.16/kWh, 50% solar offset, 90% efficiency:

  • Energy to battery = 75 × 0.6 = 45 kWh
  • Energy drawn from wall = 45 / 0.90 = 50 kWh
  • Grid cost = 50 × $0.16 = $8.00
  • Solar savings = $8.00 × 0.50 = $4.00
  • Final cost = $4.00 per session

Annualised at 200 charging sessions per year (typical for a 12,000 mi/yr commuter), this household pays $800 grid-only or $400 with 50% solar offset for all EV electricity. Compare to roughly $1,400/yr in fuel for a 35 mpg gasoline alternative at $4.50/gallon.

Per-state tariff cheat sheet (2026)

The single biggest driver of EV charging cost is your residential electricity rate. Scenario tariffs to test in the calculator above:

  • National residential average: $0.16/kWh (EIA)
  • California PG&E E-1 standard: $0.42/kWh tier 1, $0.62 tier 3
  • California PG&E EV2-A super-off-peak (12 AM-3 PM weekdays): $0.27/kWh — the time-shift case
  • Texas Oncor (deregulated REP): $0.12-0.14/kWh fixed-rate plans
  • Florida FPL standard: $0.13/kWh
  • New York Con Edison standard: $0.30/kWh, with EV TOU dropping overnight to $0.04/kWh
  • Massachusetts Eversource: $0.34/kWh standard
  • Public DC fast median: $0.43/kWh in 2026 (Volta and EV.energy datasets)

Plug these into the tariff field one at a time and the per-session and annual numbers update directly.

What lowers your EV charging cost

  • Time-of-use plans — PG&E EV2-A, SCE TOU-D-Prime, ConEd Voluntary TOU, Eversource Active Demand, ComEd Hourly Pricing all cut overnight rates 30-60% versus the flat residential tariff
  • EV-specific tariffs — separate metering or whole-house TOU specifically structured around EV load (Xcel Colorado EV-X, ConEd SC1-Rate-IV, BGE EV TOU)
  • Rooftop solar sized for EV consumption — add 1 kW of PV per 4,000 EV miles per year on top of household-only sizing
  • Battery storage paired with solar under California NEM 3.0 — captures daytime PV at $0.50/kWh retail value to discharge into the EV overnight
  • Federal IRA Section 30C — 30% credit (up to $1,000) on home Level 2 installation in qualifying rural and low-income census tracts

What raises your EV charging cost

  • DC fast as a daily habit — adds 30-50% per mile and accelerates lithium-ion calendar aging
  • Tier-3 retail rates at PG&E, SCE, SDG&E above 130% of baseline allowance — runs $0.40-0.62/kWh in summer
  • Demand charges in IID, SDG&E EV-TOU-5, and several municipal utilities — kW-based monthly fees on high-power Level 2
  • Charging during peak windows (4-9 PM in California, 2-7 PM in Texas summer) — TOU peak rates can hit $0.55-0.62/kWh

Pair this calculator with output, savings, and system cost

The output calculator estimates per-state PV generation, the savings calculator translates that into bill offset, and the system cost calculator gives you the install price. Together they let you size a solar + EV system that covers both household and transportation electricity at a known capital cost.

Sources

Frequently asked questions

How much does it cost to fully charge an electric car in 2026?
At the 2026 U.S. residential average of $0.16/kWh (EIA Form 826), a 0-100% charge on a 75 kWh battery costs about $13 of grid electricity once 10% AC charging losses are included (the wall draws roughly 83 kWh). Most drivers cycle 20-80% to extend battery life — that costs around $8 per session. California PG&E EV2-A super-off-peak ($0.27/kWh) raises the same charge to $13.50, while Texas Oncor and Florida FPL at $0.13/kWh drop it to $6.50.
What is the average annual cost to charge an EV at home in the U.S.?
A 12,000-mile-per-year driver in a 4 mi/kWh EV draws roughly 3,300 kWh from the wall annually after charging losses. At the 2026 national average of $0.16/kWh that is $528 a year — equivalent to the fuel cost of a 35 mpg gasoline car driven 4,200 miles at $4.50/gal. Off-peak EV-specific time-of-use rates (PG&E EV2-A, SCE TOU-D-Prime, ConEd Voluntary TOU) cut that to $200-300/year. With a rooftop solar array sized to the EV consumption, you can drive the marginal cost to near zero.
Is DC fast charging cheaper or more expensive than charging at home?
DC fast is 2-4x more expensive per kWh than home charging in 2026. Tesla Supercharger V4 averages $0.36/kWh for non-Tesla vehicles, Electrify America $0.48/kWh on pay-as-you-go, EVgo $0.55/kWh peak. A 20-80% session on a 75 kWh battery costs $16-26 at a public DC fast station versus $8 at home at the national average. The math is identical — only the tariff changes. Most U.S. owners do 85-90% of charging at home and reserve fast charging for road trips.
Does the calculator account for AC and DC charging losses?
Yes. Default efficiency is 90% for AC Level 2 (J1772 or NACS), reflecting losses in the on-board rectifier (5-7%), thermal management (1-3%), and trickle losses while plugged in idle (less than 1%). DC fast bypasses the on-board charger and runs at 92-95% — set efficiency to 93 in the calculator for a fast-charge scenario. The wall-to-battery efficiency directly determines how much you pay, because tariffs are billed on the wall side.
How much do solar panels reduce the cost of EV charging?
Roughly proportional to the share of charge that lines up with daylight hours plus any net-metering credit. A 6 kWp south-facing array in the lower 48 generates about 9,000 kWh/year (NREL PVWatts at 1,500 kWh/kWp baseline). For a 12,000-mile-per-year EV needing 3,300 kWh, that array produces 2.7x more than the EV consumes — meaning even with NEM 3.0 export rates of $0.05-0.10/kWh, you can offset 100% of EV electricity cost on an annual-credit basis. Direct daytime overlap charging is 30-50% in a commuter household.

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