2026 Energy Intelligence

VoltCost EV & Gas Savings Engine

Calculate your real-world charging costs, off-peak time-of-use utility savings, and Level 2 home charger payback period across all 50 US states.

⚡ Your Driving & Energy Profile

⚡ 1-Click Popular Matchups:
0% (Standard Peak) Off-peak rate: $0.089/kWh 100% Night

📊 Financial Impact

Estimated Annual Savings
+$1,142
That's $5,710 saved over 5 years
Monthly Fuel: EV
$38
$0.034 per mile
Monthly Fuel: Gas
$133
$0.118 per mile
Annual EV Electricity
$456
3,750 kWh/year
Annual Gas Spend
$1,598
482 gallons/year
EV Running Cost (28%) Cash Kept in Pocket (72%)
🔌
Level 2 Home Charger Payback: 4.5 Months
Based on a $450 hardware cost offset by your monthly fuel savings.

⚡ Maximize Your Savings with a Level 2 Home Charger

Charging on a standard 120V household outlet takes 24+ hours. A dedicated Level 2 240V charger pays for itself in months by unlocking overnight off-peak utility discounts.

⚡ 2026 State Electricity Cost Rankings

Official Energy Information Administration (EIA) data ranked by residential cost per kilowatt-hour. Click any state to load it into the calculator.

🟢 5 Most Affordable States to Charge

🔴 5 Most Expensive States to Charge

Frequently Asked Questions

Real-world facts about electric vehicle ownership, electricity tariffs, and home battery charging.

Charging an EV with an average 75 kWh battery from 10% to 80% at home in the United States costs between $6.50 and $14.00, depending on your state's electricity tariff. Under super-off-peak time-of-use (TOU) rates, this can drop below $5.00 per full charge.
Yes. Many major utilities (like PG&E, ConEd, Georgia Power, and Duke Energy) offer special EV Time-of-Use rates where electricity between 11 PM and 6 AM is 40% to 65% cheaper than daytime peak hours. Most modern EVs allow you to schedule charging automatically from your smartphone.
Once your solar array is paid off or amortized, the marginal cost of excess daytime solar kilowatt-hours fed directly into your vehicle is essentially $0.00. Paired with a smart EV charger that supports solar diversion, your vehicle runs purely on clean domestic sunlight.
For a typical commuter driving 12,000 to 15,000 miles per year, switching from public DC fast chargers (which average $0.35–$0.48/kWh) to home overnight charging ($0.09–$0.15/kWh) saves $600 to $900 annually—meaning a $400–$500 Level 2 unit pays for itself in 6 to 9 months.