Our household may be like most modern domiciles. There are electronic gadgets everywhere; beyond the behemoths of refrigerator, air conditioner, washer dryer combo, and television. My iMac must be a big power drain because I can almost feel the heat emanating from the screen and vents. External backup hard disk drives must use up plenty of power because the drives are hot to the touch.
Yes, we have our fair share of iPads and iPhones, and they get charged almost every night, so surely that adds to our electricity bill, generated by the power company that charges the most for electric power anywhere in the U.S. of A.
I’ve read about how much of a power drain various appliances are when they’re not being used. The water heater comes to mind. So do all those gadget and device chargers that sit doing nothing except sipping electricity from morning until night, awaiting the time to charge a gadget.
How much electricity do those waiting chargers use each year? Could I save a few hundred dollars but unplugging them and plugging them in only when they’re needed to charge an iPhone or iPad or some other gadget?
Adrian Kingsley-Hughes figured out the former, and from that I figured out the latter. To the former, it varies; as it depends upon the number of gadgets and chargers you have. As to the latter, can a person save a few hundred dollars a year by plugging a charger in only when needed?
Where we live the price of electricity is the highest in the nation, somewhere around 30-cents per 1KWh of electricity. Apple’s iPhone charger– that little rectangle with the electric prongs coming out one end– uses around 130 watts of power per month, being charged overnight. For residents in our dear state, that’s less than 50-cents per year, and less than 20-cents per year for the average American electric bill.
That’s just one iPhone, though. We have three iPads and two iPhones, so assuming there are similarities in the chargers, and we toss in a couple of Apple Watches which get charged overnight, we’re still not using much more than $3.00 of electricity per year.
Simply put, a host of Apple’s gadgets don’t use much electricity.
What about a Mac, specifically the 27-inch iMac on my desktop; the one I use for work? Here, the math is tricky because the Mac may be in sleep mode most of the day, and how much power is consumed depends upon hardware configurations; RAM, graphics GPU, SSD vs. Fusion Drive, etc. Mine is rated at nearly 60 watts when not in sleep mode, which is roughly 18 hours per day (about 2W). That’s 60Wh times six hours per day, or 360Wh per day, times 30 days, or around 11KWh per month, or less than $4.00 per month, including the negligible power consumption during sleep time.
My math is rounded off but you get the idea. Today’s tech gadgets, lead by the iPhone, do not use much electricity, and certainly compare favorably to other household appliances.