Biomass Resource Assessment Part I - Gainesville Regional Utilities

807060Used to provide 120 MW/yearin scenario #2Total available/year50TBtu/year403020100Urban WoodLoggingResiduesLongleafRestorationOverstockedPlantationsOverstockedNatural StandsPulpwoodFigure 19. A comparison of A) least-cost resources used to provide 10.65 TBtu/year (e.g, three40 MW facilities) under scenarios #2: “With competing demand” and #3: “With pricecompetition”, and B) total availability of these resources within the three two-hour woodsheds,excluding overlap of adjacent woodsheds.Though the data used in this report were provided in tons per county, rather than acreages percounty, estimates of yields and a range of possible acreages needed to provide the resourcesidentified in Figure 18 are shown in Table 22. It is difficult to say how many acres are requiredto support a 20 or 40 MW plant, because most of the resources used, urban wood waste andlogging residues, require no additional land for production. However, based on scenario #2, it isestimated that about 155,000 to 310,000 acres of might be accessed for 1.45 TBtu/year oflogging residues for a 40 MW plant, and 77,000 to 155,000 acres might be used to produce 0.72TBtu/year of logging residues for a 20 MW plant. An additional 13,000 to 26,000 acres could beused to produce 0.85 TBtu/year from forest thinnings or pulpwood for a 40 MW plant, or 7,000to 13,000 acres could be used to produce 0.425 TBtu/year for a 20 MW plant. The remaining1.25 TBtu/year for a 40 MW plant, or 0.63 TBtu/year for a 20 MW plant, would likely bederived from urban wood waste, requiring no additional land.69