Combined cycle - typically 7000 - 7500 BTU/Kwh

Conventional Steam - 9800 - 10,500 BTU/Kwh

Coal is still the cheaper MW because of the fuel cost per BTU. Typically <$15 per MW.

Conventional Natural Gas Plants would have to see <$1.50 per MCF (million cubic ft.) to truly compete with Coal.

A combined cycle plant can compete with coal power. $2.00 per MCF Natural Gas puts a Combined cycle plant at $15 - $17 per mw.