Grain IQ is an original production of the Nebraska Rural Radio Association with support from the Nebraska Soybean Board.
For decades, the math for U.S. grain storage was simple: for every extra bushel the American farmer grew, the industry built a bushel of space to hold it.
But according to University of Illinois economist Joe Janzen, that “bushel-for-bushel” trend has officially snapped.
In a recent episode of the Grain IQ podcast, Janzen, an associate professor of agricultural economics, highlighted a significant shift in the nation’s agricultural infrastructure: since 2020, net growth in U.S. grain storage capacity has essentially stopped, even as production continues to hit record highs.
The Storage Timeline
Janzen outlines distinct eras of the U.S. grain handling and transportation system:
- 1950s – 1970s: A period defined by massive government stockpiles. Large commercial “upright concrete elevators” were built to store grain for the USDA.
- 1980s – 1990s: An era of “rightsizing” where old, inefficient capacity was shuttered and the system was consolidated for the modern era.
- 2000 – 2019: Two decades of aggressive growth. Storage capacity grew “bushel for bushel” alongside the steady climb of U.S. corn and soybean production.
- 2020 – Present: The “puzzling” plateau. While farmers continue to get more productive and break production records – reaching nearly 24 billion bushels last year – aggregate storage capacity has remained flat.
Why the Plateau Matters to Farmers
While Janzen notes there is still enough aggregate space to house current crops, the lack of “slack” in the system creates dangerous bottlenecks. When transportation issues arise, such as low water levels on the Mississippi River, grain backs up quickly.
“What happens? Right grain backs up, basis plummets inland particularly,” Janzen said, noting that such bottlenecks can cost farmers a dollar a bushel or more in a short window of time.
Other topics covered in the episode:
- How grain storage helps with marketing timing and harvest logistics
- Differences between on-farm bins and commercial elevator storage
- Transportation challenges, including river bottlenecks and basis impacts
- Shifts toward more domestic demand like soybean processing
- The real cost of storing grain (interest and opportunity cost)
- When storage adds value — and when it can hurt marketing decisions
