Ethanol Is Just Comically Inefficient Solar Energy

It’s time to bring the real thing to the U.S. heartland

For all the backbiting and vitriol, the main candidates in the recent Iowa GOP presidential caucus agreed on a lot of issues, from immigration crackdowns (wonderful) to federal incentives for electric cars (evil). But no topic brought them into more violent consensus than the sanctity of federal support for corn-based ethanol. The heart of the nation’s corn belt, Iowa is the Saudi Arabia of that industry; and Donald Trump and his longshot rivals all vowed to maintain the federal policies that prop it up.

On this point, they’ll find no argument from the presumptive Democratic nominee. President Joe Biden staunchly supports the practice of turning corn into car fuel, as does his agriculture secretary, Tom Vilsack, who once served as governor of Iowa.

Whether they know it or not, all of these politicians are calling for the government to prop up what is a particularly byzantine and wasteful form of … solar energy. You can’t grow corn without photosynthesis, which converts energy from sunlight into plant tissue. But to liberate this embedded sun power, ethanol-bound corn must be pulverized, inundated with water, fermented, and distilled into alcohol, which can then be mixed with gasoline and burned to power engines. And that’s after the corn is planted, doused with fossil-fuel-derived fertilizers, shielded from weeds and insects with toxic chemicals, and harvested.