Electric Power Consumption Calculator

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Total Consumption
Energy: 0 kWh
Cost: $0.00
Per Month
Energy: 0 kWh
Cost: $0.00
Per Day
Energy: 0 kWh
Cost: $0.00

Cost Comparison

Compare the energy costs of different appliances or settings to find the most economical option.

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Option 2

Energy Savings Estimator

Calculate potential energy savings by switching to more efficient appliances.

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Consumption Visualization

Interactive Guide

How to Calculate Energy Consumption

Energy consumption is calculated using the following formula:

Energy (kWh) = (Power (W) × Hours used per day × Days used) ÷ 1000

Then, to calculate the cost:

Cost = Energy (kWh) × Electricity rate (per kWh)
Example Calculation

Let's calculate the energy consumption and cost for a 60W light bulb used for 5 hours a day for 30 days, with an electricity rate of $0.12 per kWh:

  1. Convert power to kW: 60W ÷ 1000 = 0.06kW
  2. Calculate daily energy: 0.06kW × 5 hours = 0.3kWh
  3. Calculate monthly energy: 0.3kWh × 30 days = 9kWh
  4. Calculate cost: 9kWh × $0.12 = $1.08
Understanding Your Results

The calculator provides three views of your energy consumption:

  • Total Consumption: For the entire period you specified
  • Per Month: Estimated monthly average
  • Per Day: Estimated daily average

Energy Saving Tips

Lighting
  • Switch to LED bulbs which use 75% less energy than incandescent bulbs
  • Use natural light whenever possible
  • Turn off lights when not in use
  • Install motion sensors or timers for outdoor lighting
Heating and Cooling
  • Set your thermostat to 78°F (26°C) in summer and 68°F (20°C) in winter
  • Use ceiling fans to help circulate air
  • Seal windows and doors to prevent drafts
  • Clean or replace HVAC filters monthly
Appliances
  • Look for ENERGY STAR certified appliances
  • Unplug electronics when not in use (phantom load)
  • Use power strips to easily turn off multiple devices
  • Run full loads in dishwashers and washing machines
Other Tips
  • Insulate your home properly
  • Use a programmable thermostat
  • Wash clothes in cold water when possible
  • Air dry clothes instead of using a dryer