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Q: Current Water Heating Cost for Shower ( Answered,   0 Comments )
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 Subject: Current Water Heating Cost for Shower Category: Miscellaneous Asked by: jbell-ga List Price: \$20.00 Posted: 04 Aug 2003 09:53 PDT Expires: 03 Sep 2003 09:53 PDT Question ID: 238883
 ```What is the current U.S. Average cost for heating a 10 minute shower? All types of Water Heaters. How many kwH does it take to heat a 10 minute shower?```
 ```On a commercial site that offers information about the costs of showering, I found these useful figures: "The calculator uses 7 cents /kwh [kilowatt hour] as the average cost of electricity... Multiply by the "cost to heat one litre of water to average showering temperature" factor ( 0.1313685 )...Usually the cost of other water heating methods (LNG, propane...) are close to the cost of electricity, when it comes to heating water... The national average for shower head flow rates is 2.6426 gpm [gallons per minute]." Shower Smart Faucet http://www.showersmartfaucet.com/gallons.html Here is a map, in pdf file format, which shows the average cost of electricity at various places in the US: Annual Average Cost of Electricity (Cents/kWh) for Residential Customers of Sample Utilities http://162.15.7.11/AEnergyCOS/SCE%20GRC%20A.02-05-004/Ch2_Figure3.pdf The most recent figure for average cost of electricity (found in many locations on the Web) is 8.5 cents per kilowatt hour: "National average: 8.5¢ per kWh" South Central Public Power District http://www.southcentralppd.com/publicpower.asp Using the information from the Shower Smart site (linked above), with an updated cost of 8.5 cents per kilowatt hour, we can do the math: Cost of electricity: \$0.085 per kWh *MULTIPLIED BY* "Cost to heat one litre of water to shower temp" factor: 0.1313685 This gives us a heating cost per liter of \$0.011166325 (or a little more than one cent). How many liters of water are used in the average ten-minute shower? The average shower uses 2.6426 gallons per minute. Since there are 3.785 liters in each gallon, this would be 10.0022 liters per minute, or 100.022 liters in ten minutes. 100.022 liters, multiplied by the cost per liter of \$0.011166325, gives a final answer (rounded to the nearest cent) of \$1.12 for the average ten-minute shower. This represents about 13.18 kWh. Search terms used: "average cost" + "shower" "shower cost" "cost of showers" "cost of a shower" "cost of heating water" "cost of heating a gallon" "cost of heating a liter" "cost to heat a gallon" "cost to heat a liter" I hope this information is helpful. If anything is unclear, or if a link does not function, please request clarification; I'll be glad to offer further assistance before you rate my answer. Best regards, pinkfreud```