i have several boosters around 1w per port
they are new and up to 20 years old all very similar as i say around 1w per port
as i often say at an average off 10 hours a day 1w = 1p a week
so 6w for 24 hours will be up to 15p a week now i havent bothered to check the usage when not on or recording but suspect it will be say 50%
so half at 8p and half at 4p so 12p a week times 52=around £6
any way the amount is fairly small compared to a 100w normal bulb that will consume an eye watering 1kw a day at 10 hours =say 14p a day or £1 a week or £50 a year for one bulb
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