Missouri's House Bill 642, introduced on April 10, 2025, aims to promote the use of biodiesel fuel across the state, addressing both environmental concerns and energy independence. The bill defines biodiesel blends and sets parameters for their use in on-road and off-road diesel vehicles, establishing a minimum blend of five percent and a maximum of twenty percent biodiesel.

Key provisions of the bill include the establishment of standards for biodiesel fuel, which must meet the ASTM International D6751 specifications. Notably, the bill excludes biodiesel produced from palm oil unless derived from waste oil and grease collected within the United States, reflecting a commitment to sustainable sourcing.

The legislation has sparked debates among lawmakers and stakeholders. Proponents argue that increasing biodiesel use will reduce greenhouse gas emissions and support local agriculture by utilizing domestically sourced materials. However, opponents raise concerns about potential impacts on food prices and the feasibility of transitioning existing infrastructure to accommodate biodiesel blends.

Economic implications of House Bill 642 could be significant. By incentivizing biodiesel production and use, the bill may stimulate job growth in the renewable energy sector and reduce reliance on fossil fuels. Additionally, the bill includes a sunset provision, meaning its provisions will automatically expire on December 31, 2028, unless reauthorized by the legislature, prompting ongoing discussions about its long-term viability.

As Missouri moves forward with this legislation, the outcomes will likely influence the state's energy landscape and its approach to environmental sustainability. The bill's success could serve as a model for other states considering similar initiatives, highlighting the balance between energy needs and ecological responsibility.