[thackney]

Converting coal to methane is sort of like converting gold to lead.

In 2008 the average price per BTU of energy was:

$2.07/BTU for Coal

$9.11/BTU for Natural Gas

$10.96/BTU for Petroleum (mixed types, averaged prices)

$20.08/BTU for Distillate Fuel Oil

Cost of Fossil-Fuel Receipts at Electric Generating Plants
http://www.eia.doe.gov/emeu/mer/pdf/pages/sec9_15.pdf

[Brilliant]

You can’t measure it simply by the btus. And how much does it cost for NG produced from coal?