(WI) Milwaukee Journal Sentinel - A Madison electric utility last week launched tests to burn wood chips, native grasses and other forms of biomass in coal boilers at its 50-year-old power plant in Cassville on the Mississippi River.

The tests by Wisconsin Power & Light Co. are designed to help the company explore cost-effective strategies to reduce its carbon footprint and prepare for a national system to reduce emissions linked to global warming, utility spokesman Steve Schultz said Tuesday. Coal-fired power plants are a leading contributor of greenhouse gases into the atmosphere. More