Hi! I have a question relating to how Storage Salvage Value is treated in the objective equation in OSeMOSYS_fast:
I think the actual calculation of discounting the salvage value is correct, but we are adding it to the cost (via the double negative) rather than subtracting it? Or I may just be interpreting something wrong?
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minimize cost: sum{r in REGION, t in TECHNOLOGY, y in YEAR} |
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((((sum{yy in YEAR: y-yy < OperationalLife[r,t] && y-yy>=0} |
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NewCapacity[r,t,yy])+ ResidualCapacity[r,t,y])*FixedCost[r,t,y] + |
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sum{m in MODEperTECHNOLOGY[t], l in TIMESLICE} |
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RateOfActivity[r,l,t,m,y]*YearSplit[l,y]*VariableCost[r,t,m,y]) / DiscountFactorMid[r,y] + |
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CapitalCost[r,t,y] * NewCapacity[r,t,y] * CapitalRecoveryFactor[r,t] * PvAnnuity[r,t] / DiscountFactor[r,y] + |
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DiscountedTechnologyEmissionsPenalty[r,t,y] - DiscountedSalvageValue[r,t,y]) + |
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sum{r in REGION, s in STORAGE, y in YEAR} (CapitalCostStorage[r,s,y] * NewStorageCapacity[r,s,y] / DiscountFactorStorage[r,s,y] - |
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- SalvageValueStorage[r,s,y] / ((1+DiscountRateStorage[r,s])^(max{yy in YEAR} max(yy)-min{yy in YEAR} min(yy)+1))); |
