Business Customer Fact Sheet

Spot the Big Spenders

Ever wonder where your energy dollar is going or how much the energy costs are for your computer? This Business Customer Fact Sheet is designed to help you get an idea how much it costs to run the types of equipment you use. For more information on energy efficiency, call 1-800-468-4743.

Spot the Big Spenders provides an estimate of energy costs. Your energy costs may vary. Average cost per kwh -- $ 0.171; Average cost per therm -- $0.63.

Lighting

LightingWattsCost ($ per hour)
Incandescent / Halogen
40 to 60 watts50 (per lamp)$0.01
75 to 100 watts88 (per lamp)$0.02
120 to 150 watts135 (per lamp)$0.02
200 to 300 watts250 (per lamp)$0.04
325 to 500 watts400 (per lamp)$0.07
1000 watts1000 (per lamp)$0.17
Mercury Vapor (bluish white)
50 to 100 watts75 (per lamp)$0.01
175 to 250 watts215 (per lamp)$0.04
400 watts400 (per lamp)$0.07
Metal Halide (White)
32 to 100 watts66 (per lamp)$0.01
175 to 250 watts215 (per lamp)$0.04
400 watts400 (per lamp)$0.07
High Pressure Sodium (golden)
35 to 100 watts65 (per lamp)$0.01
150 to 250 watts200 (per lamp)$0.03
400 watts400 (per lamp)$0.07
Fluorescent: standard T12 tubes with magnetic ballast
1 - 4-ft tube and ballast55 (per fixture)$0.01
2 - 4-ft tube and ballast96 (per fixture)$0.02
3 - 4-ft tube and ballast148 (per fixture)$0.03
4 - 4-ft tube and ballast192 (per fixture)$0.03
1 - 8-ft tube and ballast100 (per fixture)$0.02
2 - 8-ft tube and ballast172 (per fixture)$0.03

Cooling

Cooling including ventilationWattsCost ($ per hour)
Heat pump (heating and cooling)1,400 (per ton of cooling)$0.24
Electric air conditioner1,400 (per ton of cooling)$0.24
Evaporative cooler933 (per horsepower)$0.16

Refrigeration

RefrigerationWattsCost ($ per hour)
Residential refrigerator
(13 hrs/day normal usage)
175 (each)$0.03
Residential freezer150 (each)$0.03
Commercial freezer with doors215 (per linear foot)$0.04
Commercial refrigerator with doors123 (per linear foot)$0.02
Commercial refrigerator without doors160 (per linear foot)$0.03
Walk-in refrigerated storage12 (per cubic foot)$0.01

Electric Cooking

Electric CookingWattsCost ($ per hour)
Coffee maker164 (each)$0.03
Microwave oven1,500 (each)$0.26
Toaster oven750 (each)$0.13

Office Equipment

Office EquipmentWattsCost ($ per hour)
Desk top personal computer
(13 hrs/day normal usage)
90 (each)$0.02
Color monitor47 (each)$0.01
Laser printer227 (each)$0.04
Ink jet printer5 (each)$0.01
Floor mounted photocopier628 (each)$0.11
Table top photocopier450 (each)$0.08
Fax machine57 (each)$0.02

Electric Motors

Electric MotorsWattsCost ($ per hour)
Fractional horsepower
(less than 1 hp)
250 (each)$0.04
One horsepower and above746 (per horsepower)$0.13

Gas Equipment

Gas EquipmentBtu per hour input ratingCost ($ per hour)
Heater
(gas furnace operated 50% of the time)
60,000 (each)$0.19
Water heater
(40-gal water heater; 30% cycle factor)
45,000 (each)$0.09