From natural gas to electricity, Wolfram|Alpha is an excellent source of pricing information for various energy sources in the United States. You can use Wolfram|Alpha to compare sectors and compute costs for specific quantities.

Energy Prices

Current and historic data on energy prices. Compare prices by state or view by region and sector. Compute cost for a specified quantity. 

natural gas prices in Maine vs California

PA commercial electricity price vs residential electricity price

cost of 30 gallons of propane in Massachusetts

cost of 300 kWh of electricity in Minnesota

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Energy Prices

Energy Prices

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