// Free Tesla Charging Tool
Find out exactly what it costs to charge your Tesla — at home and at a Supercharger — and how long it takes. Enter any charge percentage range, pick your model, and instantly see cost, time, and cost per mile for every charging option side-by-side. Includes TOU rates, annual cost projection, and a Home vs Supercharger decision tool.
Side-by-side cost and time for every charging option. Uses your model and charge range from Tab 1.
Projected annual charging cost based on your driving habits and charging mix.
| Year | Electricity Rate | Annual Charge Cost | vs Gas (28 MPG, $3.65) | Cumulative Savings |
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Should you charge at home tonight or wait for a Supercharger stop on your drive? This decision tool compares total cost, time, and convenience.
Common questions about Tesla charging costs, charging times, Supercharger pricing, and home charging.
It depends on your battery size and electricity rate. A Tesla Model Y Long Range (75 kWh battery) charged from 0% to 100% at the US average home rate of 14¢/kWh costs about $10.50. At a Supercharger (22¢/kWh avg), the same full charge costs about $16.50. For daily use, most people charge from around 20% to 80% (a 60% charge): that's about $6.30 at home or $9.90 at a Supercharger for Model Y LR. Use the Quick Calc above for any % range and any model.
Charging time varies dramatically by the source: Level 1 (120V household outlet, 1.4 kW): adds about 3–5 miles per hour — a full charge from 20% to 80% on Model Y LR takes about 27–32 hours. Only practical for overnight top-offs of low mileage. Level 2 (240V home charger, 11.5 kW): adds about 30–35 miles/hour — a 20% to 80% charge on Model Y LR takes about 4 hours. Supercharger V3/V4 (up to 250 kW): can add 200 miles in about 15 minutes at peak rate (below 50% SoC). Above 80%, all chargers slow significantly. Use the Detailed tab above for exact times.
US Supercharger pricing averages 22–25¢ per kWh in 2026, charged per kWh in most states (a few states require per-minute billing due to regulations). Tesla+ members (the subscription service) get discounted rates. Peak pricing at busy locations can add 25–50%. Some low-cost states (parts of the Midwest, Texas) see rates around 18¢/kWh; California and Hawaii often exceed 27¢/kWh. As a rule of thumb: Supercharging costs 40–80% more per kWh than home charging in the same state. The comparison always favors home charging financially — use Superchargers for their speed and convenience, not cost.
At US average rates: Home charging (14¢/kWh): Tesla Model Y LR at 3.5 mi/kWh = 4.0¢ per mile. Supercharger (22¢/kWh): same car = 6.3¢ per mile. Compare that to a 28 MPG gas car at $3.65/gallon = 13.0¢ per mile. Both home charging and Supercharging are significantly cheaper than gas — home charging is about 3× cheaper per mile than gas, and Supercharging is about 2× cheaper. In high-electricity states like California (29¢/kWh home, 27¢/kWh SC), the SC vs home cost gap narrows considerably.
V2 Superchargers: older stations, typically 72–150 kW peak per car (power is shared between stall pairs). V3 Superchargers: individual stalls, up to 250 kW peak — no power sharing. Can add 200 miles in about 15 minutes on a compatible Tesla. V4 Superchargers: same 250 kW as V3 for current Tesla models, but with CCS connector compatibility for non-Tesla EVs, larger screens, and higher future capacity headroom. For current Tesla owners, V3 and V4 provide identical charging speeds. Peak rates are only achieved below about 50% SoC — above 80%, all Supercharger versions slow down significantly due to battery management protection.
This is deliberate battery management. Lithium-ion batteries can accept high charge rates when mostly empty, but as they approach full capacity, the charge rate must be reduced to prevent cell damage from overcharging. Tesla's BMS (Battery Management System) automatically tapers the charge rate above 80% SoC — and particularly above 90%. Going from 0% to 80% at a V3 Supercharger might take 25–30 minutes; going from 80% to 100% takes another 30+ minutes. This is why Tesla recommends 80% as your daily charge limit — it keeps you in the fast-charging zone and maximizes battery longevity. The tapering behavior is the same on home chargers, just less noticeable because they're already slow.
Home charging wins almost every time financially. At typical US rates, home charging costs 4¢/mile vs. 6–7¢/mile at Superchargers — a 50–75% savings for the same miles. Annually, a driver doing 12,000 miles/year saves about $250–$400/year by charging primarily at home vs. exclusively Supercharging. The main reasons to Supercharge: (1) you're on a road trip and need range added quickly, (2) you don't have access to home charging (apartment, no outlet), or (3) the SC is on your route with no time penalty. If you have a Level 2 home charger, use it for all daily charging. Use the Home vs SC? tab above for a personalized recommendation.
Time-of-use (TOU) rates charge different prices for electricity at different times of day — typically 3–5× cheaper during off-peak hours (usually 9 PM–7 AM weekdays and all weekend) than during peak hours (typically 4–9 PM weekdays). In California, PG&E's EV2-A rate charges ~55¢/kWh at peak vs. ~13¢/kWh off-peak. For Tesla owners, scheduling charging to the off-peak window (using Tesla's Schedule Charge feature) can reduce home charging costs by 30–55%. Use the Annual Cost tab above and enable the TOU option to see exactly how much you'd save with overnight charging.
A Tesla Model Y LR driven 12,000 miles/year at 3.5 mi/kWh uses about 3,429 kWh/year for charging. At the US average rate of 14¢/kWh, that's approximately $480/year, or $40/month added to your electric bill. In California at 29¢/kWh, the same driving costs about $994/year or $83/month. At Hawaii's 38¢/kWh: $1,303/year. Compared to gas: driving the same 12,000 miles in a 28 MPG car at $3.65/gallon costs $1,564/year — meaning a Tesla saves $1,084–$570/year on fuel depending on your state. Use the Annual Cost tab to see your exact numbers.
Yes — in two ways. First, cold batteries need 10–30% more kWh to reach the same percentage of charge because the battery's usable capacity is temporarily reduced in the cold. Second, if you use cabin heat while charging, that draws additional power from the grid. The temperature factor in this calculator accounts for the additional kWh needed. Practical tip: Tesla's Schedule Departure feature warms the battery and cabin while still plugged in, so the preconditioning energy comes from the wall (free or cheap home electricity) rather than the battery. This both improves range and reduces the effective charging cost on cold mornings.