Light Bulb Energy Savings Calculator

This calculator can calculate an estimate of your annual savings throught switching your standard light bulbs to energy efficient light bulbs.  To start you need to input what power of bulbs you are currently using, how many hours in a day it is on for, and how many of these you have. The energy savings calculator can work out the rest for you.

What is the current bulb size in Watts (e.g. 100W)? Watts
How many hours per day is this switched on? hours/day
How many of these bulbs do you have?

Recommended replacement bulb power rating: Watts
Typical cost per KW/Hr: £ 0.10
Estimated current annual cost: £ pa
Estimated new annual cost: £ pa

Estimated annual saving: £ pa

How Much Carbon Can I Save

Switching your light bulbs to energy efficient bulbs will help but as the energy consumed is typically one fifth that of conventional bulbs.  However the carbon used to generate the energy varies greatly.  Check with your energy supplier for details of the carbon cost per KW/hr.

Can I buy energy efficient bulbs on-line?

Yes, visit our green shop for low energy bulbs and solar lighting.

About This Calculator

We have made 2 assumptions in using this calculator, firstly that energy efficient bulbs reduce power consumption by one fifth, and secondly that typical UK costs are around £0.10 per Kw/hr.

All prices are estimates and My Eco World makes no guarantees about the amount of money you may actually save.

Visit the Green Energy Helpline to compare prices Go to ecotopia - green shopping
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