(AP) — A new system to capture one of the main gases linked to global warming will be tested at a Nebraska coal plant over nearly four years.

The U.S. Department of Energy chose the Nebraska Public Power District’s Gerald Gentleman plant near Sutherland for the $19 million project that starts Oct. 1.

The project will test a carbon dioxide capturing system designed by Ion Engineering of Boulder, Colo.

NPPD Vice President Tom Kent says the utility wanted to participate to get a good real-world test of the concept. If it’s successful, a system like this could help reduce pollution at NPPD’s coal plants.

A $15 million federal grant will cover most of the cost. Ion and its partners will pay most of the rest. NPPD is contributing in-kind services worth about $750,000.