b'HOW THEYRE MADE AND DISTRIBUTED Renewable identification numbers (RINs) under the The U.S. produces over three billion gallons of biodieselfederal Renewable Fuel Standard (RFS)andrenewabledieselannually.Biodieselproductionis concentrated in the Midwest, near feedstock sources, whileLow Carbon Fuel Standard (LCFS) credits in states renewable diesel facilities are largely located on the Gulflike California, Oregon, and Washingtonand West Coasts.Clean Fuel Standard programs emerging in New York Once produced, these fuels are transported to marine ter- and the Midwestminals via rail, truck, or barge. Biodiesel is blended on-site or upstream, while renewable diesel is stored and distrib-Section 45Z tax credits starting in 2025 for low carbon uted as-is. In colder regions, best practices such as insulat- intensity fuelsed tanks, heated storage, and cold flow additives ensure trouble-freewinterperformance,particularlyforhigherWhen combined with potential reductions in maintenance biodiesel blends. costs, these incentives can make clean fuels cost-compet-itive, especially when integrated into long-term procure-ECONOMICS AND INCENTIVES ment strategies.Fuel pricing is shaped by feedstock costs, transportation lo-gistics, and market demand. While renewable diesel oftenCOMPATIBILITY AND PERFORMANCEcarries a premium over petroleum diesel, existing marketMany leading marine engine manufacturersCaterpillar, incentives can offset costs: Volvo Penta, John Deere, Cummins, mtuapprove B20 AD AD37 SEPTEMBER 2025'