Saturday, February 19, 2011

One month mileage/solar report

It has been one month since we got back from San Diego.  Our total for the month since then is 901 miles and 5.9 gallons of gas for an average of 153 miles per gallon.  We drove about 220 miles on gas, mostly on a trip to Santa Rosa, so we went about 680 miles on electricity.

Since January 19, the solar panels have generated 239 kilowatt hours (kwh).  Remember that January/February are low sunlight months, so we weren't expecting too much solar.  Our meter shows that we have used 436 kwh, so the total used is 675 kwh (since the total is the meter reading plus the solar output).  Estimating that about 350 kwh were for our household use, that leaves 325 kwh for the car.  Since 680 miles were on electricity, that comes to 2.1 miles per kwh.  This is significantly less than the 3.3 miles per kwh that I had been expecting.  Stay tuned for more on this topic.

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