Let's take an optimistic scenario where Coal India (CIL) – the state owned miner responsible for 90 percent of domestic supplies - maintains a robust 7 percent annual growth rate. In this scenario India would increase production to ~ 1.5 billion tons. Despite this mammoth increase in production the country would still face a supply shortfall equal to 920 million tons by 2030 – a shortfall the size of annual U.S. coal demand and 38 percent of the total supply required for the Indian pipeline. That's a jaw-dropping amount of coal and it's the "optimistic scenario" because it's based on the fantastical belief that CIL will maintain an annual growth rate it has only achieved twice in the past 10 years.
To expand any further the industry will need forest clearances because remaining deposits sit under prime forest land. Getting those permits is already leading to a showdown with activists determined to preserve what’s left of India’s natural heritage. Which is why Prime Minister Singh’s attempts to force CIL to sign fuel supply agreements are so laughable. Without solving fundamental infrastructure problems, or convincing Indian citizens to destroy what’s left of the country’s forests, those agreements aren't worth the paper they’re printed on.
More importantly, though, even if CIL defies all past experience (and concerted opposition), the 920 million tons they will still need is roughly the size of the entire international coal market today. Unless India thinks it can lock down a monopoly on the global market good luck fueling that pipeline. Even Australia’s grand plans to more than double its coal exports wouldn't put a dent in this import bill. Speaking of bills...
The more pressing issue is at what cost India is able to secure that supply. Coal prices in the international market have hit a two year low which has caused near hysteria in Australia where billionaires are decrying their inability to lower costs to compete. But the reality is that even these "cheap" prices are still $90/ton - triple what India pays domestically. But this is likely a temporary lull. Coal prices have been on a steady upward march for the past decade and there are no signs this trend will change course given cheap, easily accessible reserves are tapped, transportation costs (oil) are rising, and an "Organization of Coal Exporting Countries" (OCEC) is emerging. Geologically speaking coal may be abundant, but economically speaking cheap coal is dead.
But hey, if you believe the industry go ahead and put your money on the table.
Just be aware, it won’t have much company.