A study by the RAND Corporation concluded the Pentagon's effort to develop renewable fuels for U.S. military ships and planes is "far more expensive" than regular petroleum, Reuters reported.
For the past couple of years, the Navy and the Air Force have expended effort and expense to make alternative fuel, for example from seed or algae oils, according to researchers Reuters interviewed. The RAND report found there hasn't been the scientific breakthrough necessary to lower the cost of alternative fuels versus the price of petroleum.
The findings, conducted for the Air Force, are likely to stir the continuing debate in Washington over the military's attempt to develop biofuels, Reuters reported. Congress is trying to prevent the military from spending money on biofuels if it cannot be proven they are competitively priced with petroleum.