Energy Saving Calculator

Use our Energy Saving Calculator for light bulbs to discover how much you could save in money and CO2 emissions using Energy Saving Light Bulbs.

Light bulb selection

Old lamp

lamp wattage

Number of
lamps to replace

Your usage *

Hours per day

Days per week

Weeks per year

Replacement lamp specifications

Life (hours)


Your currency

Your energy cost

per kWh

Energy Saving Light Bulbs

Energy saving light bulbs use up to 80% less electricity than a standard light bulb to generate the same amount of light.

Use our energy saving calculator to find out the energy and carbon savings you could make by switching to more efficient, low energy light bulbs.

Enter your details in the left hand panel to begin.

Enter your details in the left hand panel to begin

If you need help completing this please contact our sales office on 01462 490066


Energy saving

Annual cost saving

Annual cost saving

Cost saving over life of lamps

Return on investment §

Annual energy saving

CO2 saving over
life of lamps



* Default usage figures based upon UK national average. † A typical UK domestic electricity tariff of 12p per kWh. § Calculated on continuous use. ‡ The CO2 Emission Factor for Electricity has been taken as 0.527 kg/kWh, from the Department for Environment, Food and Rural Affairs on 07-Jan-2013.