Home Energy Cost Calculator
Estimate total home electric cost from major usage buckets.
This page is an editable estimator with realistic defaults so you can model your own situation in minutes.
Total kWh = base load + heating/cooling + appliances + water heating + EV charging.
Treat the result as a planning estimate and verify important numbers with the relevant official source before acting.
| Base load | 300 kWh | |
|---|---|---|
| Heating/cooling | 350 kWh | |
| Appliances/lights | 180 kWh | |
| Water heating | 120 kWh | |
| EV charging | 0 kWh |
Assumptions
- Electricity rates should include supply, delivery, taxes, and riders when possible.
- Time-of-use rates, tiered pricing, fixed fees, demand charges, and seasonal changes can affect actual bills.
- Usage varies with weather, occupancy, appliance age, controls, and behavior.
How this calculator works
Formula used
Total kWh = base load + heating/cooling + appliances + water heating + EV charging.
Example calculation
Plug in your own numbers and the result updates instantly. Total kWh = base load + heating/cooling + appliances + water heating + EV charging.
Home Energy Cost Calculator FAQ
Is this home energy cost calculator exact?
No. It is an estimate for planning only. Actual bills, savings, and sizing depend on utility tariffs, weather, usage behavior, equipment efficiency, installation quality, local code, and product specifications.
What electricity rate should I enter?
Use your all-in average rate if possible: supply, delivery, taxes, and riders divided by total kWh. Time-of-use plans, demand charges, fixed fees, and tiered rates can change the result.
Should I verify before buying equipment?
Yes. Confirm solar, battery, generator, HVAC, water heater, insulation, window, and electrical decisions with qualified installers, electricians, utility programs, and local permitting requirements.