Late this week more than 100 groups asked agricultural leaders in Congress to continue energy programs in any new farm bill.

The 2008 Farm Bill included an energy title that the groups say represents less than 1% of total farm bill spending. But the law’s energy title expires this year with no clear source of funds.

“The U.S. is experiencing strong growth in the development and commercialization of biofuels, bioproducts, biopower, biogas, energy crops, renewable energy and energy efficiency,” the groups said in a letter to the leaders of the House and Senate agriculture committees. “These important and growing industries all benefit agriculture and forestry and are poised to make huge contributions to our economic, environmental and national security in the coming years, provided that we maintain stable policies that support clean energy manufacturing and innovation.”