USDOE/EPRI BIOMASS COFIRING COOPERATIVE AGREEMENT

The Eleventh Quarter of the USDOE-EPRI contract, April 1, 1999 through June 30, 1999, was characterized by extensive testing at the Seward cofiring demonstration of GPU Genco and the Bailly Unit No.7 demonstration of NIPSCO. Technical work that proceeded during the eleventh quarter of the contract included the following: Testing at up to {approx}15 percent cofiring on a mass basis ({approx}7 percent cofiring on a Btu basis) at the Seward Generating Station No.12 boiler, focusing upon the operability of the separate injection system and the combustion/emission formation characteristics of the cofiring process; and Testing at up to {approx}10 percent cofiring of waste wood on a mass basis ({approx}5 percent cofiring on a Btu basis) at the Bailly Generating Station No.7 boiler, focusing upon the impacts of urban wood waste blended with a mixture of eastern high sulfur coal and western low sulfur coal Both tests demonstrated the following general, and expected, results from cofiring at these locations: (1) Cofiring did not impact boiler capacity; (2) Cofiring did cause a modest reduction in boiler efficiency; (3) Cofiring did reduce NOx emissions; (4) Cofiring did reduce fossil CO2 emissions; and (5) Other impacts of cofiring were modest