Thread: Pretty cool
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Old 05-01-2015, 07:17 PM   #6
Redsoxticket
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Join Date: Jan 2004
Location: MA/RI
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The savings of 25% of an monthly electric bill of $100 is $25. If the cost of the power wall is $3500 it will take 140 months to see a savings on your investment but then it would be to time to buy a new battery.
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