The University of Wisconsin System says five of its campuses are phasing out coal as a heat source.
The statewide contract to provide coal for the campuses will be allowed to expire in June.
Campuses in Oshkosh, Platteville, Stevens Point, and Superior as well as UW Stout have upgraded their boilers to run mainly on natural gas – with fuel oil as a backup.
A spokesperson for U-W-Platteville says the switchover will reduce greenhouse gas emissions due to heat generation by 20 percent.