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Guide to COST-BENEFIT ANALYSIS of investment projects - Ramiri

Guide to COST-BENEFIT ANALYSIS of investment projects - Ramiri

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As result, the probability distributions for the financial and economic performance indica<strong>to</strong>rs arecalculated, utilizing the Monte Carlo method.Table 4.44 Risk analysis: variable probability distributionsVariable Applied <strong>to</strong> Range Distribution NotesInvestment Financial and economic 78.0 ÷ 126.8 M€ Rectangular See figure 3.18Yearly cost <strong>of</strong> materials Financial 0.04 ÷ 0.12 €/m 3 Gaussian MV = 0.080; SD = 0.010Intermediate goods and services(fix plus variable)Financial 2.67 ÷ 8.02 M€/y Gaussian MV = 5.35; SD = 0.80Yearly cost <strong>of</strong> waste sludge disposal Financial 0.08325 ÷ 0.111 €/m 3 TriangularWastewater treatment tariff Financial 0.279 ÷ 0.296 €/m 3 TriangularIndustrial water service tariff Financial 0.47 ÷ 0.49 €/m 3 TriangularGained added value due <strong>to</strong> new irrigationserviceAccount price for savings in groundwaterresourcesNote: MV = Mean value; SD = Standard deviation.Economic 10% ÷ 30% TriangularEconomic 0.57 ÷ 1.05 €/m 3 Gaussian MV = 0.81; SD = 0.081Figure 4.14 shows, as an example, the probability distribution obtained for the ENPV and in the followingtable other characteristic probability parameters are given (in thousands <strong>of</strong> Euros and%) for economicperformance parameters.Table 4.45 Probability distribution for ENPV and ERRENPVERRReference value (base case) 295,519 28.9%Mean 249,079 26.0%Median 257,735 26.4%Standard deviation 62,906 4.7%Minimum value 64,176 11.9%Maximum value 400,457 37.0%Probability <strong>of</strong> the parameter (ENPV/ERR) being not higher than the reference value 0.74 0.7 4The following table shows the comparison <strong>of</strong> the Community contribution determined in the base case(see the previous section ‘Financial analysis’) with that calculated assuming the expected values (meanvalues) <strong>of</strong> the parameters (Investment cost, Residual value Revenues, Operating costs), derived from therisk analysis. Given the expected values, the maximum Community contribution is higher (+5.3%) thanthat in the base case.Table 4.46 Results <strong>of</strong> risk analysis on Community contributionParameters Base case values (M€) Expected values (M€)Total Investment costs (not discounted) 100.8 101.2Total Investment costs (discounted) 90.4 90.9Residual value (discounted) 1.4 1.4Revenues (discounted) 305.0 306.6Operating and replacement costs (discounted) 245.1 247.5Discounted net revenue (DNR) 61.3 60.5Eligible expenditure 29.1 30.4Funding gap rate (%) 32.2% 33.4%Decision amount 32.5 33.8Maximum community contribution 26.0 27.0Maximum community contribution (%) 25.8% 26.6%176

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