How Biofuels Could Starve the Poor

C. Ford Runge and Benjamin Senauer

From Foreign Affairs, May/June 2007

Summary:  Thanks to high oil prices and hefty subsidies, corn-based ethanol is now all the rage in the United States. But it takes so much supply to keep ethanol production going that the price of corn -- and those of other food staples -- is shooting up around the world. To stop this trend, and prevent even more people from going hungry, Washington must conserve more and diversify ethanol's production inputs.

C. Ford Runge is Distinguished McKnight University Professor of Applied Economics and Law and Director of the Center for International Food and Agricultural Policy at the University of Minnesota. Benjamin Senauer is Professor of Applied Economics and Co-director of the Food Industry Center at the University of Minnesota.

For now, however, the costs of harvesting, transporting, and converting such plant matters are high, which means that cellulose-based ethanol is not yet commercially viable when compared with the economies of scale of current corn-based production. One ethanol-plant manager in the Midwest has calculated that fueling an ethanol plant with switchgrass, a much-discussed alternative, would require delivering a semitrailer truckload of the grass every six minutes, 24 hours a day. The logistical difficulties and the costs of converting cellulose into fuel, combined with the subsidies and politics currently favoring the use of corn and soybeans, make it unrealistic to expect cellulose-based ethanol to become a solution within the next decade. Until it is, relying more on sugar cane to produce ethanol in tropical countries would be more efficient than using corn and would not involve using a staple food.

The future can be brighter if the right steps are taken now. Limiting U.S. dependence on fossil fuels requires a comprehensive energy-conservation program. Rather than promoting more mandates, tax breaks, and subsidies for biofuels, the U.S. government should make a major commitment to substantially increasing energy efficiency in vehicles, homes, and factories; promoting alternative sources of energy, such as solar and wind power; and investing in research to improve agricultural productivity and raise the efficiency of fuels derived from cellulose. Washington's fixation on corn-based ethanol has distorted the national agenda and diverted its attention from developing a broad and balanced strategy. In March, the U.S. Energy Department announced that it would invest up to $385 million in six biorefineries designed to convert cellulose into ethanol. That is a promising step in the right direction.