Documentation: Recreating SAM Economic Model Results in the SAM Desktop Application

Author: softwareengineerprogrammer

docs/SAM-Economic-Models.md

@@ -95,3 +95,46 @@ Discount Rate, .08
 Inflation Rate, .03
 Plant Lifetime, 30
 ```
+
+## Recreating SAM Economic Model Results in the SAM Desktop Application
+
+First, open `src/geophires_sam_economics/Generic_400_MWe.sam`
+in the SAM desktop application.
+
+Next, run GEOPHIRES for your input, e.g.:
+
+```
+python -mgeophires_x my-geophires-input.txt
+```
+
+Then check `src/geophires_x/all_messages_conf.log` for the SAM Economics Parameter Mapping entry:
+
+```
+23-05-2025 10:09:35 : INFO : EconomicsSam : calculate_sam_economics : 151 : (Process Details : (1378, MainProcess), Thread Details : (8589068352, MainThread)): SAM Economics Parameter Mapping:
+-----------------  --------------------  -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+SAM Module         Parameter             Value
+Custom Generation  analysis_period       20
+Custom Generation  user_capacity_factor  90.0
+Utility Rate       inflation_rate        2.0
+Utility Rate       degradation           [1.2734946600673935, 0.7001040275842613, 0.5267634676194525, 0.4244824247238818, 0.3529717582311231, 0.29852256883429373, 0.2548483024454293, 0.21855974702202877, 0.18762922644042462, 0.1607514026827296, 0.13703877682895466, 0.11586181507372084, 0.09675857340703789, 0.07938054662917803, 0.06345865490418974, 0.0487810281945756, 0.03517801101748528, 0.02251175220012943, 0.010668799824934945, 0.0]
+Single Owner       analysis_period       20
+Single Owner       total_installed_cost  264606243.76608825
+Single Owner       om_fixed              [7193902.821741002]
+Single Owner       om_fixed_escal        -2.0
+Single Owner       system_capacity       59020.69007804236
+Single Owner       federal_tax_rate      [21.0]
+Single Owner       state_tax_rate        [7.0]
+Single Owner       itc_fed_percent       [30.0]
+Single Owner       property_tax_rate     0.0
+Single Owner       ppa_price_input       [0.08, 0.08, 0.08322, 0.08644, 0.08966, 0.09288, 0.0961, 0.09932, 0.10254, 0.10576, 0.10898000000000001, 0.1122, 0.11542, 0.11864, 0.12186, 0.12508, 0.1283, 0.13152, 0.13474, 0.13796]
+Single Owner       debt_percent          40.0
+Single Owner       real_discount_rate    8.0
+Single Owner       term_tenor            20
+Single Owner       term_int_rate         5.0
+Single Owner       ibi_oth_amount        0.0
+-----------------  --------------------  -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+```
+
+You can then manually enter the parameters from the logged mapping into the SAM desktop app.
+
+![](sam-desktop-app-manually-enter-system-capacity-from-geophires-log.png)