# WattSpend > Free EV and home-energy cost calculators, see what it costs to charge an EV, switch to a heat pump, or install a Level 2 charger, with the math shown and 2026 data. WattSpend publishes free, plain-English cost calculators for electric vehicles and home energy. Every tool shows its formula and a "last updated" date. Electricity rates follow U.S. Energy Information Administration (EIA) residential averages; EV efficiency and battery sizes use EPA ratings. WattSpend is independent, not affiliated with any utility or automaker. Estimates only. Canonical facts (2026 examples): US average residential rate ~16.5¢/kWh; gas baseline 28 mpg at $3.20/gallon; public DC fast charging ~42¢/kWh. ## Calculators - [EV Charging Cost Calculator](https://wattspend.com/ev-charging-cost-calculator/): Per charge, per month, and next to gas, using your car and your electricity rate. - [EV vs Gas Savings Calculator](https://wattspend.com/ev-vs-gas-savings-calculator/): Cost per mile, yearly fuel savings, and the 5-year total, electric next to gasoline. - [EV Road Trip Cost Calculator](https://wattspend.com/ev-road-trip-cost-calculator/): Price a long drive with DC fast charging included, and see how it compares to gas. - [Level 2 Charger Installation Cost Calculator](https://wattspend.com/level-2-charger-installation-cost-calculator/): Estimate what a home EV charger install will cost, hardware, wiring, panel, and permit. - [Heat Pump Savings & Payback Calculator](https://wattspend.com/heat-pump-savings-calculator/): Would a heat pump cut your heating bill? Compare it to gas, oil, propane, or electric heat. - [Home Battery Backup Calculator](https://wattspend.com/home-battery-backup-calculator/): How long will a home battery power your house? Size it by the loads you want to keep on. - [Time-of-Use Savings Calculator](https://wattspend.com/time-of-use-savings-calculator/): Would an off-peak plan save you money? See it for EV charging and shiftable home loads. ## Browse by state and model - [EV Charging Cost by State](https://wattspend.com/ev-charging-cost-by-state/): all 50 states plus DC, each with its own calculator and cost-by-model table. - [EV Charging Cost by Model](https://wattspend.com/ev-charging-cost-by-model/): 31 popular EVs with battery size, efficiency, and cost by state. ## Guides - [How Much Does It Cost to Install a Level 2 EV Charger?](https://wattspend.com/guides/level-2-charger-installation-cost/): Level 2 EV charger installation runs $500–$2,500 for most homeowners. What drives the price: distance to the panel, panel capacity, and permits. - [Level 2 Charging Stations: The Complete 2026 Guide](https://wattspend.com/guides/level-2-charging-stations-explained/): What a Level 2 charging station is, how fast it charges, how many amps you need, plug-in vs hardwired, connectors, cost, and how to choose one in 2026. - [Time-of-Use Electricity Plans, Explained in Plain English](https://wattspend.com/guides/time-of-use-plans-explained/): A time-of-use plan charges more at peak, less off-peak. How the windows work, when a TOU rate saves money, and how EV owners cut charging cost 30–60%. - [Heat Pump Sizing Basics: BTUs, Tonnage, and Your Home](https://wattspend.com/guides/heat-pump-sizing-basics/): A rough rule is one ton of heat pump per 500–600 sq ft, but real sizing uses a Manual J load calc. How sizing works and why oversizing costs you. - [Home Battery Buying Guide: kWh, Chemistry, and Backup](https://wattspend.com/guides/home-battery-buying-guide/): How to choose a home backup battery: how many kWh you need, LFP vs NMC chemistry, whole-home vs essentials backup, and when a battery is actually worth it. - [Do You Need a Panel Upgrade to Charge an EV?](https://wattspend.com/guides/panel-upgrade-to-charge-ev/): Most homes don’t need a panel upgrade to add an EV charger. How a load calculation works, when an upgrade is required, and how to avoid one. - [DC Fast Charging Cost vs Home Charging: Why Public Costs More](https://wattspend.com/guides/dc-fast-charging-cost-vs-home/): Public DC fast charging averages 40–45¢/kWh, two to three times a home rate. Why it costs more, and how much you save by charging at home. - [Cold-Weather EV Range and Charging Cost](https://wattspend.com/guides/cold-weather-ev-range-and-cost/): EVs lose roughly 10–30% of range in freezing weather, raising charging cost per mile. Why cold cuts range and what winter adds to your bill. - [NACS vs CCS: EV Charging Connectors Explained](https://wattspend.com/guides/nacs-vs-ccs-connectors/): NACS is Tesla’s plug, now the US standard; CCS is the older standard on most 2020–2024 EVs. The difference, adapters, and how to tell which you have. ## Blog - [The Cheapest and Most Expensive States to Charge an EV (2026)](https://wattspend.com/blog/cheapest-states-to-charge-an-ev/): Cheapest states to charge an EV in 2026, ranked by ¢/kWh and $/month for a Tesla Model Y. See the top 10 cheapest and most expensive states. - [How Much Does It Cost to Charge an EV Each Month?](https://wattspend.com/blog/how-much-does-it-cost-to-charge-an-ev-per-month/): EV charging cost per month, broken down by miles driven, car efficiency, and state rate. See real numbers and how they compare to a gas bill. - [EV vs Gas in 2026: The Real Cost Per Mile and 5-Year Savings](https://wattspend.com/blog/ev-vs-gas-cost-2026/): EV vs gas cost in 2026: about 4.7¢/mile electric vs 11.4¢/mile gas, plus maintenance, 5-year savings, break-even, and when an EV won't pay off. - [How Much Does It Cost to Charge an EV with Home Solar?](https://wattspend.com/blog/cost-to-charge-an-ev-with-solar/): Cost to charge an EV with home solar runs about 5-8¢/kWh amortized vs 16.5¢ grid. See real math, net metering, and daytime vs battery charging. - [EV and Home Energy Tax Credits in 2026: What Changed and What Is Left](https://wattspend.com/blog/ev-home-energy-tax-credits-2026/): EV and home energy tax credits in 2026 changed fast. The EV purchase credit ended, the charger credit expires June 30, and heat-pump credits are gone. - [Is a Home Battery Worth It in 2026?](https://wattspend.com/blog/is-a-home-battery-worth-it-2026/): Is a home battery worth it in 2026? We break down backup, TOU arbitrage, and solar payback against a $10k–$18k installed cost. ## About - [Methodology](https://wattspend.com/methodology/): data sources and the exact formula each calculator uses. - [About WattSpend](https://wattspend.com/about/): who we are and how the numbers are sourced and dated.