Wynnewood Refinery has signed a five-year supply agreement with one of the nation's largest commercial trucking fleet operators. Under the terms of the agreement, Wynnewood will supply Ultra-Low Sulfur Diesel and Renewable Diesel to the fleet's fueling network across multiple southeastern states, with volumes expected to exceed 50 million gallons annually at full run-rate.
The agreement reflects a broader trend among major fleet operators: the recognition that Renewable Diesel offers a practical, immediate pathway to meaningful emissions reductions without the operational disruption and capital expense of fleet electrification.
A Dual-Fuel Supply Model
The contract structure is designed around flexibility. The fleet operator will receive a base allocation of conventional ULSD supplemented by an increasing proportion of Renewable Diesel as Wynnewood's HVO production ramps to full capacity. By year three of the agreement, the target blend will reach 30 percent Renewable Diesel — translating to an estimated 21 percent reduction in the fleet's well-to-wheel diesel emissions.
This incremental approach allows the fleet to realize measurable sustainability gains immediately while avoiding the all-or-nothing commitment that some alternative fuel transitions require.
Logistics and Delivery
Wynnewood will deliver product via a combination of pipeline, barge, and truck transport — leveraging the company's existing terminal partnerships and logistics network across the southeastern corridor. Dedicated account management and real-time supply tracking will ensure delivery reliability meets the 99.5 percent uptime standard that large fleet operations demand.
Strategic Significance
For Wynnewood, this agreement represents more than volume. It validates the company's thesis that integrated refiners — companies capable of producing both conventional and renewable fuels from the same facility — have a structural advantage in serving customers who need reliable, flexible fuel supply with an improving carbon profile over time.
The ability to offer ULSD, Renewable Diesel, and blended products from a single supply relationship simplifies procurement for the fleet operator and creates switching costs that single-product competitors cannot replicate.