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Old 10-06-2012, 07:16 PM   #5
The Newell
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One KW of electic heat = 3412 BTUs so it takes 40.7KW to equal the BTUs of one gallon of diesel (139,200 BTUs). So, at $0.10/KW one might assume that diesel would have to be $4.07/gallon (40.7 X .10 = $4.07) BUT while the electric is 100% efficient,

the diesel boiler is maybe 80% ( educated guess) it will take 1.25 gallons of diesel to equal the same amount of electric heat from 40.7KW.

At $0.10/KW it's cheaper to use the electric if diesel is $4.00 assuming 80% efficiency.

At $0.12/KW it's still cheaper, but not by much if diesel is $4.00.

At $0.15/KW diesel is cheaper again assuming diesel is $4.00 & 80%.

The cost to run is dependent on how cold it is and for how long.
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