Energy Cost Calculator
How much will my energy costs be across electricity, heating, appliances, and solar?
Calculate and compare major household energy cost scenarios in one tool.
Use This Calculator in Minutes
Model each major utility cost area and switch between calculators without losing context.
Common calculations
- Estimate monthly electric bill from usage and rate
- Compare heating fuel scenarios for winter budgeting
- Project appliance operating cost and solar payback
You get
- Actionable monthly or seasonal cost estimates
- Sensitivity to efficiency, rates, and usage changes
- A clearer path to reducing recurring utility spend
Quick Result
Estimated monthly electricity bill
$135.00
$1,620.00 per year
Based on
- • Usage: 900 kWh/month
- • Rate: $0.15 per kWh
Usage Details
Monthly Bill
$135.00
Annual Cost
$1,620.00
This tool is for illustrative purposes only and does not constitute professional financial, tax, or legal advice. Calculations are estimates and may not reflect real-world variables or local regulations. Always consult with a qualified professional before making financial decisions.
Methodology and Trust
Formulas
Monthly electricity cost
Monthly Cost = Monthly Usage (kWh) × Cost per kWh
Annual electricity cost
Annual Cost = Monthly Cost × 12
Recommended Next Steps
Continue your journey with these related tools
De-mystifying Your Electric Bill
Key Insights & Concepts
Electricity is one of the few products we buy every second of every day without knowing the price until the end of the month. Understanding how you are charged and what consumes the most power is the first step towards taking control of your monthly expenses.
The Unit of Measurement: kWh
Your electric bill isn't based on time; it's based on Work. The fundamental unit is the Kilowatt-Hour (kWh).
- 1 Watt: A tiny instantaneous flow of power (like a single LED).
- 1 Kilowatt (kW): 1,000 Watts. A hairdryer running on high uses about 1.5 kW.
- 1 Kilowatt-Hour (kWh): Using 1,000 Watts for exactly one hour.
Example: A 100-Watt bulb left on for 10 hours = 1,000 Watt-hours = 1 kWh.
What Uses the Most Power?
Not all appliances are created equal. As a rule of thumb, anything that produces heat or cool air is an energy hog.
The Heavy Hitters (High Cost)
- HVAC (AC/Heating): 40-50% of the average bill.
- Water Heater: 15-25% of the bill. It works 24/7 to keep water hot.
- Electric Oven/Dryer: 3,000-5,000 Watts when running.
- Pool Pump: Can cost $30-$50/month alone if run constantly.
The Misunderstood (Low Cost)
- Lights (LED): Negligible. A modern LED costs pennies per year.
- Phone Chargers: Incredibly efficient. Costs less than $1/year.
- Laptops: Very efficient compared to desktops.
- Fans: Use very little power compared to AC.
3 Ways to Lower Your Bill Immediately
- Wash with Cold Water: Heating water is 90% of the energy used by a washing machine.
- Thermostat Discipline: Adjusting your thermostat by just 1°F can save 3% on heating/cooling costs.
- Air Dry Dishes: Turn off the heated dry cycle on your dishwasher.