Propane vs. natural gas cost comparison
Propane contains more than twice the energy of natural gas (one cubic
foot of propane = 2,516 BTUs, while one cubic foot of natural gas =
1,030 BTUs), it’s much more efficient than natural gas. For example, in
one hour a 100,000 BTU natural gas furnace burns around 97 cubic feet,
while a propane furnace burns only 40 cubic feet in an hour.
If the natural gas cost is $15.00 per 1,000 cubic feet, the same $15.00
will purchase around one million BTUs, this is the equivalent of
slightly over 11.20 gallons of propane. If propane costs $2.50 per
gallon, in this example, natural gas is the cheaper alternative.
For $15.00 of natural gas, you would get the same BTUs as $28.00 worth
of propane.
Thus, if the Utah Group got 1 kWH of power for $0.03, it is reasonable
to assume the same power would be produced by $0.016 of natural gas.