Answered By: Debra Oswald Last Updated: Dec 10, 2014 Views: 7
The U.S. Energy Information Administration has information on this.
Prices for natural gas and coal per MMBtu are at http://www.eia.gov/forecasts/steo/report/prices.cfm
This page has information on oil per MMBtu, but be aware that the prices are for 2011: http://www.eia.gov/todayinenergy/detail.cfm?id=3450
If you want to convert prices to Btu's, these two pages explain how to do the conversions yourself:
How do I convert prices in Ccf and Mcf to Btus and therms?: http://www.eia.gov/tools/faqs/faq.cfm?id=45&t=7
Comparing values of various heating fuels: http://www.human.cornell.edu/dea/outreach/upload/CompareHeatFuels.pdf