The Weekly Fill-Up | April 20-24

April 20, 2026

Late April is when spring demand stops building and starts pressing. Across eastern South Dakota, more operations are actively in the field, and diesel usage is no longer staggered—it’s happening at the same time across a wider area. For Sioux Valley Coop patrons, this week represents a shift from planning fuel needs to actively managing them.

Diesel markets are reflecting that change. With more consistent field activity underway, demand across the Midwest is beginning to align, which naturally puts pressure on supply chains. At the same time, refinery maintenance season is nearing its end, but production levels are still working back toward full capacity. This creates a narrow window where demand is rising faster than supply is fully recovering, tightening availability at the rack level.

One of the key developments this week is how sensitive delivery timing becomes once demand reaches this stage. Earlier in April, flexibility existed because not everyone was drawing fuel at once. Now, as planting conditions improve and operations move forward together, delivery routes fill up more quickly. Even small delays in scheduling can have a larger impact when the system is running at higher volume.

Weather continues to play a major role in how demand behaves. Short windows of favorable conditions can lead to concentrated bursts of activity, where multiple days of fieldwork happen back-to-back. During those periods, diesel consumption can increase sharply in a short time, making it important to maintain strong inventory levels rather than relying on just-in-time delivery.

Another factor influencing fuel markets this week is transportation flow. With more trucks moving inputs, seed, and equipment across the region, diesel demand is being driven by both fieldwork and logistics at the same time. This broader usage base contributes to the steady upward pull on fuel consumption.

Crude oil markets have remained relatively firm, keeping a stable foundation under diesel pricing. While there have not been major spikes, the lack of downward movement reinforces that diesel prices are unlikely to ease significantly during this phase of the season. For Sioux Valley Coop patrons, this supports a strategy focused on availability and timing rather than waiting for price dips.

Propane markets remain steady and well supplied as spring continues. With winter heating demand now behind us, propane usage has shifted primarily to secondary agricultural and operational needs. Inventory levels across the Midwest remain strong, providing consistent availability without the pressure seen during peak winter months. While propane is no longer the primary focus for most operations, maintaining adequate levels ensures it doesn’t become a distraction during peak field activity.

The overall message for the week of April 20 is execution under pressure. Diesel demand is now fully active across the region, and delivery flexibility is tightening as a result. Propane remains stable in the background. For Sioux Valley Coop patrons, staying ahead of fuel needs, maintaining clear communication, and planning deliveries early in the week are key to keeping operations moving without interruption.

Sources

U.S. Energy Information Administration (EIA) – Weekly Petroleum Status Report
EIA Refinery Utilization and Distillate Production Data
EIA Propane/Propylene Inventory Report
YCharts – Midwest Diesel Fuel Price Trends