At my former company one of their primary industrial products was building and installing NG powered turbines to make electricity connected to boilers to make steam from the exhaust heat. I was laid off because the price of NG went up so much that it was no longer economical to run them. Maybe this will reawaken that market.
There has been a significant movement from coal to natural gas for electric power generation in the last couple years.
2012 Brief: Coal prices and production in most basins down in 2012
http://www.freerepublic.com/focus/f-news/2977914/posts
Energy Perspectives: For most fuel sources, domestic production has been increasing
http://www.freerepublic.com/focus/f-news/2968378/posts