Tom Hicks, Deputy Assistant Secretary of the Navy for Energy “has serious reservations… about the conclusions in the report” sent to Congress earlier this week by the RAND Corporation. The report looked at the military’s efforts to develop alternative fuels. Among the questionable conclusions: liquid coal is the most promising near-term alternative to oil.
The truth is that liquid coal is plagued with economic and environmental downsides from the time the coal is mined until long after the liquid is burned. Turning coal into liquid transportation fuel is hugely inefficient, consuming massive amounts of both water and energy. This inefficient conversion process makes liquid coal highly polluting; liquid coal produces double the carbon pollution of regular gasoline. Even if, and this is a big if, the carbon released during the production was somehow captured and stored as assumed in the RAND study, liquid coal would still release comparable amounts of carbon pollution as regular gasoline, with the added impacts of increased coal mining. Additionally, the carbon capture and storage process remains unproven and highly controversial, with unanswered concerns about the possibility of and liability for leaks and groundwater contamination, among other problems.
Because liquid coal requires vast inputs of coal, replacing a mere 10% of our nation’s transportation fuels with liquid coal would require an increase in coal mining of approximately 40%. Coal mining in our country already relies on destructive techniques like mountaintop removal mining. Destructive mining practices put communities at risk by contaminating drinking water supplies, destroying streams, and permanently reshaping and damaging the landscape. And, despite industry claims to the contrary, reclamation of coal mines and clean up of coal wastes only leads to other environmental problems.
An increase of coal mining on a scale this large would jeopardize the long-term prospects for coal. Doubling or tripling our use of coal would quickly deplete our reserves.
Making liquid coal also requires a large amount of water. About 3.5 gallons of water are needed for every gallon of transportation fuel produced, threatening our limited water supplies. The potential for water shortages is even greater in the West, where water is scarcer, and where unfortunately there has been a greater interest in building coal-to-liquid plants.
Clearly the Navy has it right. The way forward for our military and our country is not spending billions to subsidize a massively polluting fossil fuel industry, but instead to invest in renewable energy technologies. These clean energy technologies have benefits, like job creation and energy security, that reach far outside of our armed forces.
-- Kate Colarulli, Dirty Fuels, Beyond Coal Campaign