Propane:
- Propane produces 91,500 BTU's of heat per gallon.
- An 80% efficient furnace delivers 73,200 BTU's, exhausting 18,300 BTU's per gallon.
- 1.25 gallons required to accomplish 91,500 BTU's
At $2.00 per gallon, each 91,500 Btu's would cost $2.50.
Fuel Oil:
- Fuel oil produces 138,500 BTU's of heat per gallon.
- An 80% efficient furnace delivers 110,800 BTU's exhausting 27,700 BTU's per gallon.
- 1.25 gallons are required to accomplish 138,500 BTU's
At $3.00 per gallon, each 138,500 BTU's would cost $3.75.
Electricity:
- Electricity is 100% Efficient
- 1 kilowatt equals 3412 BTU's
Savings:
- 26.82 kWh electricity = 1 gallon of propane
- 40.56 kWh electricity = 1 gallon fuel oil
Comparisons
The chart below reflects propane price at $2.00 per gallon and fuel oil prices at $3.00 per gallon.
(Electricity=3412 BTU/kWh, Propane=91500 BTU/gallon and Fuel Oil=138500 BTU/gallon.)
|
100% Efficient Elec. | 80% Efficient Propane | Elec | Savings | 90% Efficient Propane | Elec | Savings | 80% Efficient Fuel Oil | Elec | Savings |
| 0.046/KWh | $2.50 | $1.23 | $1.27/gal | $2.22 | $1.23 | $.99/gal | $3.75 | $1.23 | $2.52/gal |
| 0.051/KWh | $2.50 | $1.15 | $1.14/gal | $2.22 | $1.36 | $.85/gal | $3.75 | $1.36 | $2.39/gal |
| 0.063/KWh | $2.50 | $1.69 | $.81/gal | $2.22 | $1.69 | $.53/gal | $3.75 | $1.69 | $2.06/gal |
| 0.097/KWh | $2.50 | $2.60 | none | $2.22 | $2.60 | none | $3.75 | $2.60 | $1.15/gal |
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