The IEA-Grimethorpe pressurized fluid-bed (PFB) pilot plant has recently completed 3,600 hours of testing, the results of which provide valuable design information for the commercial application of PFB systems to utility applications. This paper presents the particular results of the Grimethorpe tests which relate to the design needs of coal-fired power plants and an assessment of the impact on plant design. The application of results to the construction of new and retrofit power plants is discussed. Also discussed are those aspects of the Grimethorpe results which impact the economics of advanced coal-fired power plant operations.