How much does 400 watt cost in the uk?

Question

Hi i have just been given a christmas tree of eldery couple and has the lights already on and says will not exceed 400watt in the uk how much an hour would this cost just an estimate it seems pretty high at 400watt looks very nice when lit up thou any info will be great

Answer 1

Electricity uses is charged in kilowatt hours, or 1,000 watts every hour.

For an example let's assume your electric rate is 10 cents per kilowatt hour. 400 watts for one hour would be .4 kwh or 4 cents. If the lights were left on 24 hours a day, that would be 9.6 kwh or 96 cents. This would be about $30 for a month.

The electric bill should show what your cost per kilowatt hour is. Just use your currency unit and kwh charge to determine your cost.