The Obama and McCain campaigns both keep mentioning our need to explore “clean coal” in addition to other energy supplies. But what exactly does that mean? Clean Coal, the tech for which is not 100% worked out yet, means that when a power plant burns coal, it captures and sequesters the carbon released and doesn’t let it get into the atmosphere. That sounds OK (better than regular power plants, for sure), but if you look deeper you see that carbon is by far not the only problem (thanks to treehugger.com for compiling the quotes):
“Clean coal is a myth. There’s no such thing. Even with carbon sequestration, you still have mercury, sulfur dioxide, and nitrogen dioxide. You still have to transport coal, which requires diesel. Hardwood forests are destroyed, thousands of miles of waterways are poisoned and tops of mountains are completely erased. Talk about a massive loss of natural capital!
And if you think the supply angle justifies clean coal, think again.
While coal advocates will scream from the missing mountaintops that we have a 250-year supply, they neglect to mention that that particular estimate is based on a USGS study from the 1970s. Today, however, the USGS believes that only about five percent of those reserves are recoverable with today’s technology and prices. And that’s also based on today’s consumption rate. If we end up using more coal, which some suspect could be possible with the integration of “clean coal” technology (not to mention the continued depletion of natural gas), the rate of consumption could be much higher.”
-Jeff Siegel, from Can Sarah Palin Become an Energy Security Specialist?:
Here is another quote:
“…a potentially critical factor. Historically, coal combustion wastes rarely exhibit the characteristics of hazardous waste. However, if coal burning utilities and the so-called “clean coal plants” were required to meet air emissions standards protective of human health, fly ash produced by them could be regulated as hazardous waste due to the elevated levels of mercury that would result. We might suppose that any fly ash with hazardous characteristics due to heavy metal content would have to be sent to special and expensive waste fills or be treated at great cost.”
-John Laumer in There Is No Such Thing As Clean Coal
One last voice:
“Even if we suppose that big coal starts to build the expensive gasification plants soon and that they can solve most of the technical problems with geosequestration, they are not saying that they want to replace old, extremely dirty plants with the new ones; they want to build new ones and keep the old ones. They almost certainly won’t bear the liability of CO2 leaks from underground storage, so that’s an extra cost for taxpayers, not to mention that the electricity coming from coal gasification plants that do carbon sequestration will be more expensive because a lot of energy is lost in the process of running the plants, in the actual sequestration operating, and the huge costs of building the pipelines, the plants, drilling the holes, maintenance & monitoring, etc, will be passed on to the customers (or they’ll ask for subsidies - same difference).”
- Michael Graham Richard on Why Carbon Sequestration Won’t Save U
So where do the candidats stand on this issue?:
McCain prioritizes offshore drilling, domestic natural gas, clean coal, nuclear, and then renewables. According to his website, McCain would give $2 Billion for clean coal technology research and development, and once we got it figured out we would export the technology to places like China, creating jobs and “allowing the U.S. to play a greater role in the international green economy.”
Obama’s campaign materials prioritize renewables, clean coal, drilling, then nuclear. His idea is that requiring emissions caps would incentivize builders of new power plants to only build clean coal facilities.
Palin doesn’t seem to have an opinion about energy beyond drilling, specifically in the Alaskan Arctic Wildlife Preserve.
Biden’s view is actually contrary to Obama’s - he doesn’t like clean coal and never has. When asked about it by voters, he tries to avoid the question of US coal use and spin it to something like “we need to develop the technology so we can give it to China so they don’t poison us with their dirty coal.”