How Much Does It Cost to Run a Table Lamp?
A table lamp with a modern LED bulb costs very little to run, usually well under a penny per hour. In this guide we show you the simple formula for working out the exact cost in your own home: multiply the bulb wattage by the hours it is on, divide by 1,000 to get kilowatt hours, then multiply by the unit rate on your electricity tariff. Worked examples compare LED, halogen and traditional incandescent bulbs so you can see how much difference a bulb swap makes over a year of evenings. We explain why LEDs are so efficient, why lumens are a better guide to brightness than watts, and how hours of use, the number of lamps, dimming, standby power and time of use tariffs affect what you pay. You will also find practical ways to keep lighting costs low and a comparison of table lamps, ceiling lights and floor lamps....
