Energy Savings Calculator

Energy Saving Calculator

Please use our simple energy saving calculator to determine annual energy cost savings, when replacing one lamp or a full lighting system. This cost saving can be used to compare a lighting upgrade and will help to calculate a simple payback and return on investment.

STEP 1
Calculate the total power (kilowatts, kW) saved by upgrading your lighting.

Simply click on each bulb and fill in your values:
Original lamp wattage
Watt
Replacement lamp wattage
Watt
Number of lamps to replace
Lamps
Energy saved per lamp
W
watt
bulbsok
Total energy saved
W
watt
=
kW
kilowatt
STEP 2
Calculate the total energy (kilowatt hours, kWh) saved annually.
Hours of use per day
hrs/day
Days of use per week
days/wk
Weeks of use per year
wks/yr
Total energy saved per year
kWh/yr
kilowatt per year
STEP 3
Calculate the total amount saved per year.
Your energy cost per kWh
£
(typically £0.10)
Total energy cost savings
£ per year
STEP 4
Calculate Payback / Return on Investment (ROI).
Initial Cost of Lighting Upgrade
£
Return on Investment (ROI)

About the author

Lighting specialist based in West Yorkshire, UK, is here to help solve your lighting problems! LampShopOnline hold vast stocks of almost every bulb and lamp from the leading manufacturers of GE, Philips, Osram, Sylvania,Crompton and Venture. LampShopOnline also stock Control Gear and emergency lighting products from the following major brands: Tridonic, Helvar, Thorn, Mackwell, Orbik, BAG, Liteplan and Emergency Lighting Products (ELP).

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Lamp Shop Online located at 4 High Keep Fold , Hall Green, West Yorkshire . Reviewed by 1931 customers rated: 4.9 / 5