Allow user to specify product acquisition costs

src/instance/parse.jl

@@ -51,6 +51,7 @@ function parse(json)::Instance
         emissions = Dict()
         disposal_limit = zeros(T)
         disposal_cost = zeros(T)
+        acquisition_cost = zeros(T)
 
         if "transportation energy (J/km/tonne)" in keys(product_dict)
             energy = product_dict["transportation energy (J/km/tonne)"]
@@ -68,6 +69,10 @@ function parse(json)::Instance
             disposal_cost = product_dict["disposal cost (\$/tonne)"]
         end
 
+        if "acquisition cost (\$/tonne)" in keys(product_dict)
+            acquisition_cost = product_dict["acquisition cost (\$/tonne)"]
+        end
+
         prod_centers = []
 
         product = Product(
@@ -77,6 +82,7 @@ function parse(json)::Instance
             emissions,
             disposal_limit,
             disposal_cost,
+            acquisition_cost,
             prod_centers,
         )
         push!(products, product)

src/instance/structs.jl

@@ -15,6 +15,7 @@ mutable struct Product
     transportation_emissions::Dict{String,Vector{Float64}}
     disposal_limit::Vector{Float64}
     disposal_cost::Vector{Float64}
+    acquisition_cost::Vector{Float64}
     collection_centers::Vector
 end
 

src/model/build.jl

@@ -149,10 +149,16 @@ function create_objective_function!(model::JuMP.Model)
     # Collection shipping node costs
     for n in values(graph.collection_shipping_nodes), t = 1:T
 
-        # Disposal costs
+        # Acquisition costs
         add_to_expression!(
             obj,
-            n.location.product.disposal_cost[t],
+            n.location.product.acquisition_cost[t] * n.location.amount[t]
+        )
+
+        # Disposal costs -- in this case, we recover the acquisition cost.
+        add_to_expression!(
+            obj,
+            (n.location.product.disposal_cost[t] - n.location.product.acquisition_cost[t]),
             model[:collection_dispose][n, t],
         )
     end

src/model/getsol.jl

@@ -46,6 +46,22 @@ function get_solution(model::JuMP.Model; marginal_costs = true)
             "Amount (tonne)" => n.location.amount,
             "Dispose (tonne)" =>
                 [JuMP.value(model[:collection_dispose][n, t]) for t = 1:T],
+            "Acquisition cost (\$)" =>
+                [
+                    (
+                        n.location.amount[t] -
+                        JuMP.value(model[:collection_dispose][n, t])
+                    ) * n.location.product.acquisition_cost[t]
+                    for t = 1:T
+                ],
+            "Disposal cost (\$)" =>
+                [
+                    (
+                        JuMP.value(model[:collection_dispose][n, t])
+                        * n.location.product.disposal_cost[t]
+                    )
+                    for t = 1:T
+                ]
         )
         if marginal_costs
             location_dict["Marginal cost (\$/tonne)"] = [

src/reports/products.jl

@@ -15,6 +15,8 @@ function products_report(solution; marginal_costs = true)::DataFrame
     df."amount (tonne)" = Float64[]
     df."amount disposed (tonne)" = Float64[]
     df."marginal cost (\$/tonne)" = Float64[]
+    df."acquisition cost (\$)" = Float64[]
+    df."disposal cost (\$)" = Float64[]
     T = length(solution["Energy"]["Plants (GJ)"])
     for (prod_name, prod_dict) in solution["Products"]
         for (location_name, location_dict) in prod_dict
@@ -24,6 +26,8 @@ function products_report(solution; marginal_costs = true)::DataFrame
                 longitude = round(location_dict["Longitude (deg)"], digits = 6)
                 amount = location_dict["Amount (tonne)"][year]
                 amount_disposed = location_dict["Dispose (tonne)"][year]
+                acquisition_cost = location_dict["Acquisition cost (\$)"][year]
+                disposal_cost = location_dict["Disposal cost (\$)"][year]
                 push!(
                     df,
                     [
@@ -35,6 +39,8 @@ function products_report(solution; marginal_costs = true)::DataFrame
                         amount,
                         marginal_cost,
                         amount_disposed,
+                        acquisition_cost,
+                        disposal_cost,
                     ],
                 )
             end