2012 hasn't been a good year for coal stocks, and if the U.S. Energy Information Administration is right, the next eight years aren't shaping up to be any better. The EIA said in its recent Annual Energy Outlook report that 49 GW of coal generation capacity could be retired by 2020 -- that's a sixth of the nation's coal plants.
The level of retirements is only the reference case for the EIA's analysis and will be affected most heavily by the price of natural gas and economic growth. The worst-case scenario for coal is that gas remains at a low price and economic growth remains slow. Under those circumstances, as much as 70 GW could be retired.
Drivers of coal's demise
The EIA says that older, more inefficient plants in the eastern U.S. will be the first to go, pointing the finger of blame squarely at natural gas. Natural gas is hitting coal not only from an environmental-impact standpoint, but also on the marginal rate for power generation, and with the low price of natural gas, this makes coal power plants less profitable.
This is bad news for companies that supply coal to the nation's coal plants. Alpha Natural Resources
Foolish bottom line
Some investors think that when a stock is down, it will eventually bounce back. For coal, all of the evidence points not to a mere short-term plunge, but rather to a long-term decline in the industry. I still don't think coal stocks are good buys, no matter how far they've fallen, and more will end up in bankruptcy, just like Patriot Coal.
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Fool contributor Travis Hoium does not have a position in any company mentioned. You can follow Travis on Twitter at @FlushDrawFool, check out his personal stock holdings or follow his CAPS picks at TMFFlushDraw.
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