Now whether clean coal will be too expensive to use no one really knows yet.

FORBES: Getting the Economics of Climate Change Entirely Wrong: Clean Coal Might Be Too Expensive To Use

There is no free lunch whether with coal mining or deep-water drilling, or for those who are honest, in the enormous underlying mining and chemical infrastructure needed to build vast arrays of wind and solar farms.

FORBES: Post Fukushima-- burn more coal and oil, and hire more engineers not regulators

Last year, Mr. Choudhury, the company's chairman, said fear of probes into alleged wrongdoing was slowing decision-making at NTPC over operational issues, including whether to buy overseas coal blocks to reduce supply deficits.

WSJ: Graft Worries Slow India Coal Imports