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Every watt-hour you can save is heat that the customer doesn't have to deal with.
With the cost of the Kyoto Protocol looming large on the horizon, every watt-hour we save represents fewer carbon-credits we need to purchase.
Reusing paper saves the energy used to make new paper (an average of 15 watt-hours of energy is used to produce a single sheet of paper), and it saves you the money of purchasing it.
He lent me a digital power meter that measures both demand in watts and cumulative energy consumption in watt-hours .
We'll skip over the explanation that energy output ought to be expressed as watt-hours or BTUs per hour, but never is.
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