Biomass Resource Assessment Part I - Gainesville Regional Utilities

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the current pulpwood harvests are available at current pulpwood prices forbioenergy. However, if the less expensive resources in this analysis are usedbefore pulpwood, it is expected that little if any pulpwood will be required tomeet demand for the three potential 40 MW facilities. Our results suggest that3.93, 3.42, and 2.96 TBtu/year from urban wood waste, logging residues, andthinnings are probably available for GRU, JEA, and TAL at prices lower than theclosest available pulpwood. In other words, while commercial timber harvestscomprise most of the current biomass yields in north Florida, they probablycomprise a very small proportion, if any, of the least-cost feedstock mix needed tosupply the three 40 MW facilities in the area, assuming each plant requires 3.55TBtu/year 4 (Figure 2).12,0001102610,000Dry Tons Per Year (thousands)8,0006,0004,0002,00081838650Removals of growingstock on timberlandNet growth of growingstock on timberland<strong>Biomass</strong> needed togenerate 120 MW20Pulpwood needed inscenario #2 togenerate 120 MWFigure 2. Removals, net growth (growth minus mortality) of commercial growing stock ontimberlands in Florida, the total amount of biomass needed to generate 120 MW, and the amountof commercial pulpwood required to generate 120 MW in scenario #2 (described below) forGRU, JEA, and TAL.4 The following Btu calculation for 40 MW was provided by GRU: (8,760 hours)*(.75 pu)*(13,500Btu/kWh)*(k/1,000)*(40 MW)*(1,000,000/M)*(T/1,000,000,000,000) = 3.55 TBtu.17
Poorly Stocked2.818%Overstocked1.38%Nonstocked0.53%Fully Stocked5.938%Medium Stocked5.133%Figure 3. Timberland acres (in percent and million acres) in Florida by stocking class.18
Page 3 and 4: ACKNOWLEDGEMENTSThe authors acknowl
Page 5 and 6: 4.2. Scenario A: Delivered to remot
Page 7: Figure 22. Projected softwood and h
Page 10 and 11: LIST OF ACRONYMS AND ABBREVIATIONSB
Page 12 and 13: 1. INTRODUCTION1.1. Project Backgro
Page 14 and 15: Task-3: Transportation. Transportat
Page 16 and 17: 2. TASK 1: WOODSHED DELINEATION AND
Page 18 and 19: calculations for urban wood waste a
Page 22 and 23: 2,0001,800Acres (thousands)1,6001,4
Page 24 and 25: ton -1 ($17.38 green ton -1 ) for t
Page 26 and 27: $ per million BTU, delivered$4.00$3
Page 28 and 29: 10.65 TBtu/year required to meet de
Page 30 and 31: haul time category in each county,
Page 32 and 33: Figure 9. TAL Hopkins two-hour one-
Page 34 and 35: Figure 11. GRU, JEA, and TAL woodsh
Page 36 and 37: Dry tonsrecoverableTBtu/yearRecover
Page 38 and 39: Dry tonsrecoverableTBtu/yearrecover
Page 40 and 41: Table 6. Results for scenario #3,
Page 46 and 47: 6.005.004.00$/MMBtu3.002.001.001: W
Page 48 and 49: Resource/haul time categoryDry tons
Page 58 and 59: 6.005.004.00$/MMBtu3.002.001.001: W
Page 66: Table 19. Results for scenario #4,
Page 71 and 72:
2.4.4. General resultsIt is difficu
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Table 22. Yield, acreage required,
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Table 25. Capital construction outp
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3. TASK 2: SUSTAINABILITY IMPACTS F
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under this scenario are expected to
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acres in 1995 to 8.5 MM acres in 20
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3.3. RESULTS3.3.1. GRUTable 27. Res
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5.004.504.003.50$/MMBtu3.002.502.00
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Table 30. Results for the conservat
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3.3.3. TAL Hopkins facilityTable 31
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5.004.504.003.50$/MMBtu3.002.502.00
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For GRU most of these do not apply;
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Table 33. Concentration yard costs.
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location of the rail siding and the
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discussed, to get an idea of the pr
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5. TASK 4: CO 2 EMISSIONS FROM HARV
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in fuel chips and the carbon in fue
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transporting coal. However, because
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6. COMBINED RESOURCE AVAILABILITYPa
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Resource/haul time categoryTBtu/yea
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Table 39. Combined resources (resou
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OverstockedNatural Stands,0.16, 1%
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logging residues from 90% to 60% to
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ecommend that GRU, in coordination
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9. REFERENCESBlack and Veach (2004)
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Biomass Resource Assessment Part I - Gainesville Regional Utilities

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