Household Power Usage with the Kill-A-Watt

I just performed a rather interesting exercise in data collection – I measured the annual cost of running various household appliances, assuming they are on all the time. Heaters, used in the winter, were by far the most expensive. For runner up, TVs and computers were the next most expensive. See the table below for the breakdown.

Assume \$0.14/KWH, Measured with Kill-a-Watt EZ P3, Model P4460.01
Description Model Effective Watts cost per year Approx Time Meas'd (Min)
Raspberry pi 3 \$3.67 5
Older Desktop (2008?) 67 \$82.16 13
Luke desktop-core i5 Lynnfield, 16GB Ram 90 \$110.00 15
Amy desktop-core i5 Sandy, 16GB Ram 55 \$67.45 15
Laptop - HP Pavilion DM4 17 \$20.84 10
Fridgerator - Whirlpool ET18HPXJW0 86 \$105.00 10
iLuv stereo (Apple) 3 \$3.67 2353 HRS
Gas stove - Frigidaire Gallery FGFS68CJSA 1 \$1.22 10
Cable Modem - Motorola SB6121 6 \$7.35 6
TV - Vizio eco 1080P - On VA320M 155 \$190.00 5
TV - Vizio eco 1080P - Off VA320M 0 \$0.00 10
Cable box - (free from comcast) On or Off DCT700/US 9 \$11.03 5
VCR/DVD player - Magnavox - On DV220MW9 10 \$12.26 5
VCR/DVD player - Magnavox - Off DV220MW9 2 \$2.45 5
Space heater - Holmes - HI HCH4953 1149 \$1,409.00 once stabilized
Space heater - Holmes - LOW HCH4953 1007 \$1,235.00 once stabilized
Oil radiating heater - Pelonis - HI HO-0221 1268 \$1,555.00 once stabilized
Oil radiating heater - Pelonis - MED HO-0221 789 \$968.00 once stabilized
Oil radiating heater - Pelonis - LOW HO-0221 539 \$661.00 once stabilized
Freezer - Kenmore 253.29201000 98 \$120.00 10
Router/Cordless phone base station Medialink N type 4 \$4.90 10
Obihai 202 2 \$2.45 5
Desktop monitor - LG Flatron W2240T 28 \$34.33 5

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