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IDENTIFYING ENVIRONMENTALLY PREFERABLE USES FOR BIOMASS

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IDENTIFYING ENVIRONMENTALLY PREFERABLE USES FOR BIOMASS ( identifying-environmentally-preferable-uses-for-biomass )

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BC Bugwood Envirochem Services Inc. 120 100 80 60 40 20 0.5 7 0000000000000 15 21 117 66 12 22 38 27 81 61 Figure 5.2.1 Comparison of Plant Economics at a Harvesting Cost of $68.55/bdt (left bars) and $40/m3 (right bars) Figure 5.2.2 shows the incentives required per m3 of bugwood processed for each technology to reach a 10% ROI, again for both the lower and higher harvesting costs. Subtracting these numbers from the assumed harvesting cost of $26.05 or $40.50 per m3 reveals the harvesting cost at which the process would become profitable. For example, at a feedstock harvesting cost of $40.50/m3 ($106/bdt), Case 2 of pellet production would require a $13/m3 incentive, equivalent to a 30% cost reduction in feedstock harvesting cost, to achieve a desirable ROI; the ethanol requires a 20% reduction in harvesting cost. CHP (on-grid) processes would require 8% improved feedstock economics (full cost for a CHP district heat system is not included as it is dependent on the local need and specific installation). This suggests that in such cases, mixing the bugwood with other, low-costs feedstocks, such as sawmill waste or hog fuel, may enable such technologies to operate profitably using a feedstock predominantly consisting of bugwood. 50 40 30 20 10 0 -10 47 15 29 32 13 22 37 10 24 23 9 5 00000000000 8 Figure 5.2.2 Feedstock Incentive Required to Generate 10% ROI for Different Technologies at Harvesting Cost of $68.55/bdt (left bars) and $40/m3 (right bars) Page 84 Pellets, Case 1 Pellets, Case 2 Pellets, Case 3 Briquettes (Alberta) Bio-Liquid Methanol Methanol (H2) E th anol SNG CHP 250kWe off Pellets, Case 1 Pellets, Case 2 CHP 2MW on CHP 2MW off Pellets, Case 3 Briquettes (Alberta) Bio-Liquid Methanol Methanol (H2) Ethanol SNG CHP 250kWe off CHP 2MW on CHP 2MW off Incentive ($/m3) ROI (%)

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