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Christmas lights (LED) and energy costs - could be better, could be worse .........
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A bit of reading reveals that some councils aren't going to be switching on their town/city Christmas lights this year due to the rising energy costs.
This of course got me thinking - how much will it cost for somebody to have a few Christmas lights at home, on the tree for example?
Must be LED lights of course as they use around 10% of the energy of the older incandescent lights.
Based on the government's figures:
and using the standard variable tariff of 34p kWh I estimate that it could cost about £1.20 to run 200 LED bulbs (0.1W per bulb) for six hours.
Does this seem reasonable or am I way off with my calculations?
Another solution is to perhaps use some of those short strings of lights that are powered by AA or AAA batteries, and of course to use rechargeable batteries (which don't seem to cost much to recharge).
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A string of 100 LED xmas tree lights uses about 4W from what I can see. 1 kWh of electricity would, therefore, power the string for 1000/4 or 250 hours.
That makes the single string of tree lights cost 34p for nearly 10 1/2 days.
edit: here's the power supply from my xmas tree lights - 3.6W
^^Difficult to do, and made up guestimate figures - but you get the idea.