A bill under consideration in Indiana’s state House would require the state to pursue primary authority in permitting wells used for carbon dioxide disposal.

The proposed legislation, House Bill 1368, would require the Indiana Department of Natural Resources to seek primary authority over such wells, according to the Indiana Capital Chronicle. Such wells are meant to permanently store carbon dioxide from industry underground to prevent it from entering the atmosphere and warming the climate.

These wells are currently regulated by the EPA, which as of Jan. 16 listed nine applications under consideration in Indiana. Companies can use these wells to get significant taxpayer subsidies for every ton of carbon dioxide stored. However, the technology has not been proven to be economically viable at large scale, especially without these subsidies.

Arizona, Louisiana, North Dakota, Texas, West Virginia, and Wyoming currently have primary authority over these wells. Applications for state authority are pending in Alabama, Alaska, Colorado, Mississippi, Nebraska, New Mexico, Oklahoma, and Utah, according to Indiana Capital Chronicle reporting.

Carbon storage projects have encountered fierce backlash from landowners and rural resident in multiple states. In Indiana, about two dozen Indiana residents mostly living near a carbon storage project in West Terre Haute urged state officials to reject the project at a hearing last July, the news outlet reported.