The main purpose of this legislation, known as the Supporting Energy and Economic Development (SEED) Act, is to extend financial incentives for biodiesel and renewable diesel through changes to the Internal Revenue Code. The goal is to promote the use of these cleaner fuels, which can help reduce reliance on fossil fuels and support environmental sustainability. Key provisions of the Act include extending the income tax credit for biodiesel and renewable diesel from 2024 to 2029.