I'm a bit dubious about those quoted costs. As an example, the Brother HL-2130 is estimated at 215kWh per year. Averaged out, that's over 24watts 365 days per year, 24 hours per day. It's equivalent to the printer being in full ready mode (i.e. hot and ready to go) for 7 hours every day and printing for 1 hour. That's well over 1,000 pages per day, vastly more than the usage this sort of printer is designed for, an wholly atypical of a home office or domestic situation. Also, the printer defaults to entering deep sleep mode (0.8W) after 5 minutes. In a domestic situation this is how it can be expected to remain for the vast majority of the time (or switched off).
In fact Brother's estimate is 0.913kWh per week or 47kWh per year which is about £5 and an average of about 5W. I think that's much more realistic for typical home use - indeed it would be at the high end in my view.
I suspect that's typical of most modern printers. Until somebody puts an energy usage monitor on one of these for a few months in a typical environment, we won't know for sure, but for now I think the estimates are simply wrong for any environment where this class of printer will be used.
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Re: Electricity Consumption - a Real Cost
I'm a bit dubious about those quoted costs. As an example, the Brother HL-2130 is estimated at 215kWh per year. Averaged out, that's over 24watts 365 days per year, 24 hours per day. It's equivalent to the printer being in full ready mode (i.e. hot and ready to go) for 7 hours every day and printing for 1 hour. That's well over 1,000 pages per day, vastly more than the usage this sort of printer is designed for, an wholly atypical of a home office or domestic situation. Also, the printer defaults to entering deep sleep mode (0.8W) after 5 minutes. In a domestic situation this is how it can be expected to remain for the vast majority of the time (or switched off).
In fact Brother's estimate is 0.913kWh per week or 47kWh per year which is about £5 and an average of about 5W. I think that's much more realistic for typical home use - indeed it would be at the high end in my view.
I suspect that's typical of most modern printers. Until somebody puts an energy usage monitor on one of these for a few months in a typical environment, we won't know for sure, but for now I think the estimates are simply wrong for any environment where this class of printer will be used.