If a rezoning amendment approved Monday night by the Plan Commission moves forward, UW-Madisonâ??s Charter Street Heating Plant will be renovated and expanded to burn biomass and natural gas instead of coal. The $250 million project will transform the plant that has been burning coal since the 1860s, said Alan Fish, UWâ??s associate vice chancellor for facilities. The project includes demolishing part of the facility on the south side of the UW-Madison campus and building a biomass fuel handling and storage facility there.