Energy Cost Calculator

Checkout cancelled · you have not been charged

Still deciding on the Home Energy Audit Kit?

• Energy audit (XLSX)
• Meter log (XLSX)
• Wattage reference (PDF)
• Saving checklist (PDF, DOCX)

• Full refund within 7 days
• Instant download
• Local currency at checkout where available
• Secure checkout by Stripe

Buy now — $5.00Try a free sheet first

What stopped you? (optional, anonymous)

The priceNot sure it fits my needPayment problemJust looking for now

Free printables

Single sheets you can print right now, no sign-up. The full pack adds every sheet in one download plus the editable files.

Printable Home Energy Audit Worksheet2 pages · free PDFPrintable Electricity Meter Log2 pages · free PDFPrintable Wattage Reference Chart1 page · free PDFPrintable Energy Saving Checklist1 page · free PDF

Browse the free printables →

How electricity cost is calculated

1. Find the power in watts (W) — on the label, in the manual or on a plug-in meter.
2. Multiply by hours of use per day to get watt-hours.
3. Divide by 1,000 to get kilowatt-hours (kWh) per day.
4. Multiply by the number of days, then by your price per kWh.

Formula: cost = watts × hours ÷ 1,000 × price per kWh. A 1,500 W heater used for 4 hours a day uses 6 kWh a day; at $0.17 per kWh that is $1.02 a day, about $31 a month.

Typical appliance power

These are typical figures for common models; your appliances may differ. Fridges, freezers and air conditioners cycle on and off, so their average draw is much lower than their rated power. A plug-in energy monitor gives the most accurate numbers.

Finding your price per kWh

Your electricity bill shows the unit rate per kWh, sometimes split into energy and delivery charges; add them together for an all-in rate, but leave out fixed daily or monthly charges, which you pay regardless of use. Rates vary widely between countries, states and suppliers, and time-of-use tariffs charge more at peak times — use the rate that applies when the appliance runs.

How to use the calculator

1. Enter your price per kWh and currency symbol.
2. List appliances as name | watts | hours per day, optionally with days per month.
3. Or pick typical appliances from the dropdown to add them quickly.
4. Read each appliance’s daily energy, monthly and yearly cost and its share of the total.
5. Try changes — fewer hours, a more efficient model — and see the savings.

Worked example

With electricity at $0.17 per kWh, the sample list costs about $522 a year. The space heater (1,500 W for 4 hours a day) is the biggest item at roughly $367 a year, the fridge about $89, the TV about $25, the laptop about $16 and the kettle about $25. Turning the heater down to 3 hours a day would save about $92 a year.

Standby power

Many devices draw power when “off”: TVs, consoles, chargers, smart speakers and set-top boxes. Individually it is small — often 0.5–5 W — but a household can have dozens of such devices. At $0.17 per kWh, every watt running all year costs about $1.49. Smart plugs, switched power strips and eco settings can cut standby waste.

Ways to cut energy costs

• Heat and cool the person, not the house: heated blankets and fans use far less than space heaters and AC.
• Wash clothes at lower temperatures and air-dry when possible.
• Use LED lighting — typically 75–85% less energy than incandescent bulbs.
• Keep fridge and freezer seals clean and set temperatures correctly.
• Boil only the water you need.
• Shift heavy loads to off-peak hours on time-of-use tariffs.

Heating and cooling

Heating and cooling are usually the largest parts of a home’s energy use, so the thermostat setting matters most. As a rough rule of thumb, each degree Celsius (about two degrees Fahrenheit) of heating set-point reduction saves several percent of heating energy. Heat pumps deliver two to four units of heat for each unit of electricity, so they cost far less to run than resistance heaters like the 1,500 W space heater in the example.

Measuring actual consumption

What the template pack includes

A home energy audit workbook (Excel) with appliance list and costs, a meter reading log, an appliance wattage reference sheet and an energy-saving checklist.