Lighting Cost Calculator

Lighting Cost Calculator — Calculate Energy Usage & Savings

Calculate lighting energy costs, compare bulb types (LED, CFL, Incandescent), and estimate savings with our comprehensive calculator. Plan your lighting for maximum efficiency and cost-effectiveness.

Step 1: Lighting Specifications

Bulb Type

Number of Bulbs

10 bulbs

Wattage per Bulb

12 W

Daily Usage Hours

6 hours

Typical Bulb Wattages

LED: 6-15W, CFL: 13-20W, Halogen: 40-60W, Incandescent: 60-100W. LED bulbs last 15-25 times longer than incandescent and use 75% less energy.

Step 2: Cost Specifications

Electricity Rate

Rate (£/kWh)

Currency

Time Period

Cost per Bulb

£4.50

Show savings vs. incandescent bulbs

Show energy cost visualization

Energy Cost Tips

UK average electricity rate: £0.34/kWh. Switching from 60W incandescent to 12W LED can save £15-20 per bulb annually. Consider daylight sensors and timers for additional savings.

Lighting Cost Results

Cost Summary

Cost Visualization

Bulb Comparison

Total Lighting Cost

£12.85

Monthly for 10 × 12W LED bulbs

Energy Consumption

21.6 kWh

Energy Cost

£7.34

Bulb Replacement Cost

£5.51

Estimated Savings

£28.40

Energy Cost Visualization

Daily Cost

£0.43

Annual Cost

£154.20

CO₂ Emissions

9.7 kg

Payback Period

8 months

Bulb Type Comparison

Bulb Type	Wattage	Lifespan	Monthly Cost	Annual Savings*

*Savings compared to 60W incandescent, 6 hours daily use, £0.34/kWh

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