reenfieldResearchInc.pact,biomass-firedCFBboilerforplacementwithinanexistingPC-firedplant.ThecapitalcostoftheCFBboilerworkedoutto$139/kWth.TheO&Mcostswereconservativelyestimatedat$5/MWhth.4.3.Gasificationco-firingIntheanalysisofthegasificationco-firingoption,agenerationlossof0.5%wastaken,thusreducingtheplantcapacityfactorto79.5%.Theproductgasproducedbythegasifiercancauseproblemsintheback-passoftheboilerwithincreasedtubecorrosion/fouling.Thiswouldleadtoaslightincreaseintimeforboilermaintenanceandrepairs,andhencethelowercapacityfactor.Thecapitalcostofthegasificationco-firingoptionwascalculatedbasedontheanalysisofAntares[14].Antaresproposedacapitalcostestimateof382USD/kWe.Thecapitalcostwasthenfoundusingtheheatingrateoftheexistingcoal-firedplant.TheO&Mcostsofthegasifierwereestimatedat$6/MWhth.
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