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1 ton of coal costs $36 = $0.006 per KWH. 1 barrel of oil costs $70 = $0.05 per KWH. 1 cubic foot of gas $0.008 = $0.03 per KWH. In comparison to solar energy, the hydrocarbon fuel costs are significantly lower without rebates, tax benefits nor the cost of carbon emissions.A twoâKilowatt (KW) solar energy system costs about $45,000 and covers roughly half of a typical American householdâs energy needs.verage solar energy system costs = $8.95 per watt. In order to compare the solar energy costs to conventional hydrocarbon fuels, we must covert the $8.95 per into KWH. Letâs make two calculations to measure the total electric energy output over the lifespan of the solar energy system.
Cleveland area households paid an average of 14.6 cents per kilowatt hour (kWh) of electricity in August 2015, 4.3 percent higher than the 14.0 cents per kWh paid in August 2014. Utility (piped) gas averaged 60.1 cents per therm in August, down from its average price of 81.1 cents per therm a year earlier.t $2.566 a gallon, costs for gasoline in the Cleveland area were 17.9 cents lower than the national average of $2.745 in August 2015. Average gasoline costs in Cleveland have been lower than the U.S. average by 5.8 cents or more during the previous two years (2013-2014) in August.