how much electricity does my computer consume?
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Most computers are built to use up to 400 kilowatts of electricity per hour, but they usually use less than that. The average CPU uses about as many kilowatts per hour as the typical light bulb. Any computer that's running on a Pentium-type processor uses about 100 kWh. This is with the monitor off.
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A window AC unit can use anywhere from 500 to 1440 watts of electricity to run, while a typical central air unit in the average sized home uses about 3500 watts.
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To get specifics regarding your energy usage, you only need one tool, really: an electricity usage monitor that tells you exactly how many kWh a device or appliance is drawing. The monitor can be as simple as a "plug load" monitor that plugs into an outlet; then you plug the device/appliance into the monitor.
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To summarise this, a desktop computer (including the monitor) will cost at least 10.2c per hour in electricity to operate. Meanwhile, a laptop will generally only cost 1 to 3 cents for several hours of use.
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Using your desktop computer At an average of 28 cents per kWh, a low end machine (110w with CRT monitor) can cost as much as $90 per year if left on for 8 hours per day. Adding the cost of the printer, scanner, speakers and other peripherals, and the bill can easily tip over $100 per year.
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Coming back to a typical middle class apartment in India, consuming 200–300 units per month. Power consumption is about few thousand watts peak. You can do a simple exercise. Create a spreadsheet with all electrical equipment, wattage and working hours, and prepare an estimate for your house.
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Completely charging a laptop will cost around 1 to 3 cents in electricity usage, depending on the size of the specific laptop's battery, as well as your electricity usage rate. Small laptops, such as notebooks, generally have a 30-50Wh battery capacity, costing 1 to 1.5 cents to charge.
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Depending on the tonnage of the AC and heat load in a room, an AC would consume about 1 to 2 units of electricity in an hour. A 1 kW Solar PV Panel would produce about 5-7 units in a day, which can get consumed in 4-5 hours of continuous running of an air conditioner.
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Energy Use According to the Saving Electricity website, a medium-sized window air conditioner consumes approximately 900 watts of electricity hourly. A floor fan, on the other hand, generally only uses 100 watts per hour. Given these figures, it takes nine fans to equal the energy used by a single room air conditioner.
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The average fan will consume around 30W to 50W. More powerful 'high-speed' fans will generally consume between 60W and 100W, costing as much as 2.87c per hour or $42 per year, again assuming it's used every day for four hours.
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Simply turning off your PC when it's not in use can save even more electricity. CNET Labs tested the energy consumption of a mix of desktops and laptops recently and found that a mainstream desktop, on average, uses roughly 100 watts when idle. Under heavy use, that number jumps to 145 watts.
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An electric blanket might consume 200 watts (depending on the setting). So if you leave it on for 10 hours, it consumes 2 kilowatt-hours. That would cost between 15 and 30 cents, depending on your location.
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Gaming PCs, the souped-up desktops and laptops used by enthusiasts, constitute only around 2.5% of the total user base, but they account for approximately 75 terawatt hours, or 20%, of the total consumed by laptops, desktops and gaming consoles. In all, the power bill for these gaming PCs comes to $10 billion a year.
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Most desktop computers consume around 70 to 200 watts while laptops would consume between 15 to 60 watts. That's 70% to 80% difference and savings.
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Energy Usage A window AC unit can use anywhere from 500 to 1440 watts of electricity to run, while a typical central air unit in the average sized home uses about 3500 watts.
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How much electricity does an American home use? In 2018, the average annual electricity consumption for a U.S. residential utility customer was 10,972 kilowatthours (kWh), an average of about 914 kWh per month.
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The average energy consumption of a gaming PC is around 1,400 kWh per year.