Total surface equipment costs as derived output

Author: softwareengineerprogrammer

src/geophires_x/Economics.py

@@ -2115,6 +2115,15 @@ def __init__(self, model: Model):
                         'user or a district-heating system. These costs are estimated at $750 per meter pipeline '
                         'length and can be manually added by the user to the pipeline distribution costs.'
         )
+
+        self.surface_equipment_costs_total = self.OutputParameterDict[self.surface_equipment_costs_total.Name] = OutputParameter(
+            Name='Total surface equipment costs',
+            UnitType=Units.CURRENCY,
+            PreferredUnits=CurrencyUnit.MDOLLARS,
+            CurrentUnits=CurrencyUnit.MDOLLARS,
+            ToolTipText=f'{self.Cplant.Name} plus {self.Cgath.Name}.'
+        )
+
         self.Cpiping = self.OutputParameterDict[self.Cpiping.Name] = OutputParameter(
             Name="Transmission pipeline costs",
             display_name='Transmission pipeline cost',
@@ -3843,6 +3852,9 @@ def _calculate_derived_outputs(self, model: Model) -> None:
                 .to(convertible_unit(self.chp_percent_cost_allocation_for_electrical_plant.CurrentUnits)).magnitude
             )
 
+        self.surface_equipment_costs_total.value = (self.Cplant.quantity() + self.Cgath.quantity()).to(
+            self.surface_equipment_costs_total.CurrentUnits).magnitude
+
 
     @property
     def has_production_based_royalties(self):

src/geophires_x/Outputs.py

@@ -511,7 +511,7 @@ def PrintOutputs(self, model: Model):
                     if model.surfaceplant.plant_type.value == PlantType.DISTRICT_HEATING:
                         f.write(f'         District Heating System Cost:                  {model.economics.dhdistrictcost.value:10.2f} {model.economics.dhdistrictcost.CurrentUnits.value}\n')
 
-                    f.write(f'         Total surface equipment costs:                 {(model.economics.Cplant.value+model.economics.Cgath.value):10.2f} ' + model.economics.Cplant.CurrentUnits.value + NL)
+                    f.write(f'         {econ.surface_equipment_costs_total.display_name}:                 {econ.surface_equipment_costs_total.value:10.2f} {econ.surface_equipment_costs_total.CurrentUnits.value}\n')
 
                 if model.economics.totalcapcost.Valid and model.wellbores.redrill.value > 0:
                     f.write(f'         Drilling and completion costs (for redrilling):{econ.Cwell.value:10.2f} {econ.Cwell.CurrentUnits.value}\n')

src/geophires_x_schema_generator/geophires-result.json

@@ -460,7 +460,11 @@
           "description": "Field gathering system cost. The built-in cost correlation for estimating the field gathering system cost includes the cost for surface piping from each well to the plant and pumps for production and injection wells. The length of the surface piping is assumed 750 m per well at a cost of $500 per meter. The pumping cost for each pump in the production wells (line-shaft pumps) and a single pump for the injection wells is calculated with the same correlation as GETEM. Contingency (default: 15%). and indirect costs (default: 12%) are added. The built-in cost correlation does not include the cost of pipelines to an off-site heat user or a district-heating system. These costs are estimated at $750 per meter pipeline length and can be manually added by the user to the pipeline distribution costs.",
           "units": "MUSD"
         },
-        "Total surface equipment costs": {},
+        "Total surface equipment costs": {
+          "type": "number",
+          "description": "Surface Plant cost plus Field gathering system cost.",
+          "units": "MUSD"
+        },
         "Investment Tax Credit": {
           "type": "number",
           "description": "Investment Tax Credit Value. Represents the total undiscounted ITC sum. For SAM Economic Models, this accounts for the standard Year 1 Federal ITC as well as any applicable State ITCs or multi-year credit schedules.",