The woebegone U.S. coal industry received a rare bit of good news recently as the independent power company NRG Energy announced the completion of a $1 billion venture in Texas.

Called Petra Nova, the project separates more than 90% of the carbon dioxide from 240 megawatts of coal-fired power at a generating plant near Houston.

Petra Nova first captured carbon dioxide in September and has delivered more than 100,000 tons of the gas to an old oil field 80 miles away, where it is injected to produce more crude from the ground. (Read More)