Appliance Energy Calculator
Calculate energy consumption and costs of household appliances and devices
Energy Price Setting
Add Appliances
Kitchen Appliances
Add Custom Appliance
Energy Saving Tips
Recommendations to reduce your energy consumption
Unplug Standby Devices
Many devices consume energy even in standby mode. Unplug chargers, televisions, and other electronics when not in use.
Use Efficient Appliances
Replace old appliances with modern, efficient models with Energy Star certification to significantly reduce electricity consumption.
Optimise Usage Times
Use energy-intensive appliances during off-peak hours when electricity rates are lower, and group tasks to reduce total usage time.
Typical Consumption
Reference guide for common household appliances and their energy consumption
Kitchen Appliances
Laundry Appliances
Electronics Appliances
HVAC Appliances
Lighting Appliances
How to Use the Appliance Energy Calculator
How to Use the Appliance Energy Calculator
- 1
Find Appliance Wattage
Check appliance label, manual, or rating plate for wattage. Common UK appliances: Fridge-freezer 150-400W, microwave 800-1000W, TV 50-200W, computer 50-100W, washer/dryer 2000-3000W, kettle 2000-3000W. If only amps listed: Watts = Amps × 230V.
- 2
Estimate Daily Usage Hours
Track how many hours appliance runs per day. Fridge-freezer: 8-12 hrs (cycles on/off), TV: 3-6 hrs, computer: 4-8 hrs, lights: varies by room, kettle: 0.5-1 hr total. Be realistic - usage habits significantly affect costs.
- 3
Input Electricity Rate
Enter cost per kWh from your electric bill (usually £0.24-£0.35/kWh depending on tariff). Include all charges (energy + standing charge + VAT) divided by total kWh for true cost. Consider Economy 7 if applicable (cheaper night rate £0.15-£0.25/kWh).
- 4
Check Standby Power
Many devices use 5-20W when 'off' but plugged in. Measure with plug-in energy monitor or estimate: set-top box 15-30W, game console 10-15W, chargers 3-5W each. Adds up to £80-£150/year per household - use timer switches or smart plugs to eliminate waste.
- 5
Review Annual Costs
Calculator shows daily, monthly, and annual electricity cost per appliance. Identify top energy users (usually heating, tumble dryer, electric shower, immersion heater). Consider: replacing old inefficient units with A+++ rated models (10-50% savings available), reducing usage hours, upgrading to LED lighting (80% saving vs halogen), or unplugging standby vampires.
Pro Tip: Use Ctrl+Enter to calculate quickly, or Ctrl+R to reset the form.
Frequently Asked Questions
What uses the most electricity in my home?
Top energy users: 1) Heating/cooling (40-50% of bill), 2) Water heater (15-20%), 3) Refrigerator (5-10%), 4) Washer/dryer (5-10%), 5) Lighting (5-10%), 6) TV/entertainment (3-5%). Percentages vary by climate and usage. Focus efficiency improvements on top 3 categories for maximum savings.
Is it worth replacing old appliances for energy savings?
Replace if: appliance is 10+ years old, uses >50% more energy than Energy Star model, or needs major repair. Example: old refrigerator uses 1,000-1,500 kWh/year (£120-225), new Energy Star uses 300-400 kWh/year (£36-60), saving £84-165/year. At £800 new cost, payback is 5-10 years.
How much do phantom loads really cost?
Standby power (phantom loads) typically costs £100-200/year per household. Major culprits: cable boxes (30W), game consoles (15W), computers (5W), chargers (5W each). Solution: use smart power strips, unplug devices when not in use, or enable device sleep modes. Easy 5-10% electricity bill reduction.
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