This document calculates the annual energy and cost savings from replacing 5 standard 50-watt light bulbs that are on for 6 hours per day with more efficient 3-watt LED light bulbs, finding that switching to LEDs would save £61.76 per year based on an electricity cost of 12 pence per kilowatt hour.

1. Energy Savings Calculator
Number of Lights 5
Wattage of Current Lamp 50 Watts
Wattage of LED Lamp 3 Watts
Hours on per day 6 Hours
Electricity cost 12 pence per Kw Hr
Annual cost of existing lights £65.70
Annual cost of LED Lights £3.94
Annual Savings £61.76