A Kansas Senate committee is debating whether to delay or change requirements that the state's utility companies use more renewable fuels.
The state required major utility companies to be able to generate 10 percent of their energy through a renewable source by 2011.
Those requirements would increase to 15 percent by 2016 and 20 percent by 2020.
The Senate committee on utilities is considering extending the 15 percent mandate to 2018 and the 20 percent requirement to 2024.
It would also allow delaying those requirements if utilities can show good cause, such as increased costs to customers.
The committee heard from supporters and opponents last week and on Tuesday.
The Energy and Environmental Policy Committee will hear more testimony next week.