diff --git a/src/load_inputs/load_multistage_data.jl b/src/load_inputs/load_multistage_data.jl
index 8c7b22ae51..edd5021839 100644
--- a/src/load_inputs/load_multistage_data.jl
+++ b/src/load_inputs/load_multistage_data.jl
@@ -1,9 +1,12 @@
-function load_multistage_dataframe(filepath::AbstractString)
+function load_multistage_dataframe(filepath::AbstractString, scale_factor::Float64)
     if !isfile(filepath)
         error("Multistage data file not found at $filepath")
     end
 
     multistage_in = load_dataframe(filepath)
+    # rename columns lowercase for internal consistency
+    rename!(multistage_in, lowercase.(names(multistage_in)))
+    scale_multistage_data!(multistage_in, scale_factor)
 
     validate_multistage_data!(multistage_in)
 
@@ -12,11 +15,28 @@ end
 
 function validate_multistage_data!(multistage_df::DataFrame)
     # cols that the user must provide
-    required_cols = ("Lifetime","Capital_Recovery_Period")
+    required_cols = ("lifetime","capital_recovery_period")
     # check that all required columns are present
     for col in required_cols
         if col ∉ names(multistage_df)
             error("Multistage data file is missing column $col")
         end
     end
+end
+
+function scale_multistage_data!(multistage_in::DataFrame, scale_factor::Float64)
+    columns_to_scale = [:min_retired_cap_mw,            # to GW
+                        :min_retired_charge_cap_mw,     # to GW
+                        :min_retired_energy_cap_mw,     # to GW
+
+                        :min_retired_cap_inverter_mw,
+                        :min_retired_cap_solar_mw,
+                        :min_retired_cap_wind_mw,
+                        :min_retired_cap_charge_dc_mw,
+                        :min_retired_cap_charge_ac_mw,
+                        :min_retired_cap_discharge_dc_mw,
+                        :min_retired_cap_discharge_ac_mw,
+                        ]
+    scale_columns!(multistage_in, columns_to_scale, scale_factor)
+    return nothing
 end
\ No newline at end of file
diff --git a/src/load_inputs/load_resources_data.jl b/src/load_inputs/load_resources_data.jl
index 8e283c765d..57bfebd697 100644
--- a/src/load_inputs/load_resources_data.jl
+++ b/src/load_inputs/load_resources_data.jl
@@ -657,13 +657,15 @@ Reads module dataframes, loops over files and adds columns as new attributes to
 - `resources_path::AbstractString`: The path to the resources folder.
 """
 function add_modules_to_resources!(resources::Vector{<:AbstractResource}, setup::Dict, resources_path::AbstractString)
+    scale_factor = setup["ParameterScale"] == 1 ? ModelScalingFactor : 1.0
+
     modules = Vector{DataFrame}()
 
     ## Load all modules and add them to the list of modules to be added to resources
     # Add multistage if multistage is activated
     if setup["MultiStage"] == 1
         filename = joinpath(resources_path, "Resource_multistage_data.csv")
-        multistage_in = load_multistage_dataframe(filename)
+        multistage_in = load_multistage_dataframe(filename, scale_factor)
         push!(modules, multistage_in)
         @info "Multistage data successfully read."
     end
diff --git a/src/model/resources/resources.jl b/src/model/resources/resources.jl
index e6dabe179e..aed64a9f94 100644
--- a/src/model/resources/resources.jl
+++ b/src/model/resources/resources.jl
@@ -867,9 +867,9 @@ for attr in (:min_retired_cap_inverter_mw,
              :min_retired_cap_charge_dc_mw,
              :min_retired_cap_discharge_ac_mw,
              :min_retired_cap_charge_ac_mw,)
-    @eval @interface $attr default_zero VreStorage
+    @eval @interface $attr default_zero 
     cum_attr = Symbol("cum_"*String(attr))
-    @eval @interface $cum_attr default_zero VreStorage
+    @eval @interface $cum_attr default_zero 
 end
 
 ## policies
diff --git a/test/multi_stage/cum_min_ret/inputs_p1/resources/Resource_multistage_data.csv b/test/multi_stage/cum_min_ret/inputs_p1/resources/Resource_multistage_data.csv
new file mode 100644
index 0000000000..746d495897
--- /dev/null
+++ b/test/multi_stage/cum_min_ret/inputs_p1/resources/Resource_multistage_data.csv
@@ -0,0 +1,14 @@
+Resource,WACC,Capital_Recovery_Period,capital_recovery_period_dc,tech_wacc_dc,capital_recovery_period_solar,tech_wacc_solar,capital_recovery_period_wind,tech_wacc_wind,capital_recovery_period_discharge_dc,tech_wacc_discharge_dc,capital_recovery_period_charge_dc,tech_wacc_charge_dc,capital_recovery_period_discharge_ac,tech_wacc_discharge_ac,capital_recovery_period_charge_ac,tech_wacc_charge_ac,Lifetime,Min_Retired_Cap_MW,Min_Retired_Energy_Cap_MW,Min_Retired_Charge_Cap_MW,Min_Retired_Cap_Inverter_MW,Min_Retired_Cap_Solar_MW,Min_Retired_Cap_Wind_MW,Min_Retired_Cap_Charge_DC_MW,Min_Retired_Cap_Charge_AC_MW,Min_Retired_Cap_Discharge_DC_MW,Min_Retired_Cap_Discharge_AC_MW
+natural_gas_combined_cycle,0.039,20,30,0.139,40,0.239,50,0.339,60,0.439,70,0.539,80,0.639,90,0.739,20,30,0,0,0,0,0,0,0,0,0
+solar_pv,0.017,20,30,0.117,40,0.217,50,0.317,60,0.417,70,0.517,80,0.617,90,0.717,20,40,0,0,0,0,0,0,0,0,0
+onshore_wind,0.024,20,30,0.124,40,0.224,50,0.324,60,0.424,70,0.524,80,0.624,90,0.724,20,10,0,0,0,0,0,0,0,0,0
+battery_sym,0.024,20,30,0.124,40,0.224,50,0.324,60,0.424,70,0.524,80,0.624,90,0.724,20,5,15,0,0,0,0,0,0,0,0
+battery_asym,0.027,20,30,0.127,40,0.227,50,0.327,60,0.427,70,0.527,80,0.627,90,0.727,20,6,16,26,0,0,0,0,0,0,0
+landbasedwind_class1_moderate,0.027,20,30,0.127,40,0.227,50,0.327,60,0.427,70,0.527,80,0.627,90,0.727,20,7,0,0,0,0,10,0,0,0,0
+utilitypv_class1_moderate,0.027,20,30,0.127,40,0.227,50,0.327,60,0.427,70,0.527,80,0.627,90,0.727,20,8,0,0,27,20,0,0,0,0,0
+storage_sym_discharge,0.027,20,30,0.127,40,0.227,50,0.327,60,0.427,70,0.527,80,0.627,90,0.727,20,9,17,0,0,0,0,0,0,0,0
+storage_asym_ac_discharge,0.027,20,30,0.127,40,0.227,50,0.327,60,0.427,70,0.527,80,0.627,90,0.727,20,10,18,0,0,0,0,0,0,0,33
+storage_asym_dc_discharge,0.027,20,30,0.127,40,0.227,50,0.327,60,0.427,70,0.527,80,0.627,90,0.727,20,11,19,0,28,0,0,0,0,32,0
+storage_sym_charge,0.027,20,30,0.127,40,0.227,50,0.327,60,0.427,70,0.527,80,0.627,90,0.727,20,12,20,0,0,0,0,0,0,0,0
+storage_asym_ac_charge,0.027,20,30,0.127,40,0.227,50,0.327,60,0.427,70,0.527,80,0.627,90,0.727,20,13,21,0,0,0,0,0,31,0,0
+storage_asym_dc_charge,0.027,20,30,0.127,40,0.227,50,0.327,60,0.427,70,0.527,80,0.627,90,0.727,20,14,22,0,29,0,0,30,0,0,0
\ No newline at end of file
diff --git a/test/multi_stage/cum_min_ret/inputs_p1/resources/Storage.csv b/test/multi_stage/cum_min_ret/inputs_p1/resources/Storage.csv
new file mode 100644
index 0000000000..727788b728
--- /dev/null
+++ b/test/multi_stage/cum_min_ret/inputs_p1/resources/Storage.csv
@@ -0,0 +1,3 @@
+Resource,Zone,Model,New_Build,Can_Retire,Existing_Cap_MW,Existing_Cap_MWh,Max_Cap_MW,Max_Cap_MWh,Min_Cap_MW,Min_Cap_MWh,Inv_Cost_per_MWyr,Inv_Cost_per_MWhyr,Fixed_OM_Cost_per_MWyr,Fixed_OM_Cost_per_MWhyr,Fixed_OM_Cost_Charge_per_MWyr,Var_OM_Cost_per_MWh,Var_OM_Cost_per_MWh_In,Self_disch,Eff_Up,Eff_Down,Min_Duration,Max_Duration,Resource_Type,region,cluster
+battery_sym,1,1,1,1,0,0,-1,-1,0,0,19584,22494,4895,5622,5622,0.15,0.15,0,0.92,0.92,1,10,battery_mid,NE,0
+battery_asym,1,2,1,1,0,0,-1,-1,0,0,19584,22494,4895,5622,5622,0.15,0.15,0,0.92,0.92,1,10,battery_mid,NE,0
\ No newline at end of file
diff --git a/test/multi_stage/cum_min_ret/inputs_p1/resources/Thermal.csv b/test/multi_stage/cum_min_ret/inputs_p1/resources/Thermal.csv
new file mode 100644
index 0000000000..865619f951
--- /dev/null
+++ b/test/multi_stage/cum_min_ret/inputs_p1/resources/Thermal.csv
@@ -0,0 +1,2 @@
+Resource,Zone,Model,New_Build,Can_Retire,Existing_Cap_MW,Max_Cap_MW,Min_Cap_MW,Inv_Cost_per_MWyr,Fixed_OM_Cost_per_MWyr,Var_OM_Cost_per_MWh,Heat_Rate_MMBTU_per_MWh,Fuel,Cap_Size,Start_Cost_per_MW,Start_Fuel_MMBTU_per_MW,Up_Time,Down_Time,Ramp_Up_Percentage,Ramp_Dn_Percentage,Min_Power,Reg_Max,Rsv_Max,Reg_Cost,Rsv_Cost,MGA,Resource_Type,region,cluster
+natural_gas_combined_cycle,1,1,0,1,10000,-1,0,65400,10287,3.55,7.43,NG,250,91,2,6,6,0.64,0.64,0.468,0.25,0.5,0,0,1,natural_gas_fired_combined_cycle,NE,1
\ No newline at end of file
diff --git a/test/multi_stage/cum_min_ret/inputs_p1/resources/Vre.csv b/test/multi_stage/cum_min_ret/inputs_p1/resources/Vre.csv
new file mode 100644
index 0000000000..b6f20427d5
--- /dev/null
+++ b/test/multi_stage/cum_min_ret/inputs_p1/resources/Vre.csv
@@ -0,0 +1,3 @@
+Resource,Zone,Num_VRE_Bins,New_Build,Can_Retire,Existing_Cap_MW,Max_Cap_MW,Min_Cap_MW,Inv_Cost_per_MWyr,Fixed_OM_Cost_per_MWyr,Var_OM_Cost_per_MWh,Heat_Rate_MMBTU_per_MWh,MGA,Resource_Type,region,cluster
+solar_pv,1,1,1,1,500,-1,0,85300,18760,0,9.13,1,solar_photovoltaic,NE,1
+onshore_wind,1,1,1,1,1000,-1,0,97200,43205,0.1,9.12,1,onshore_wind_turbine,NE,1
\ No newline at end of file
diff --git a/test/multi_stage/cum_min_ret/inputs_p1/resources/Vre_stor.csv b/test/multi_stage/cum_min_ret/inputs_p1/resources/Vre_stor.csv
new file mode 100644
index 0000000000..dce1b2d7e2
--- /dev/null
+++ b/test/multi_stage/cum_min_ret/inputs_p1/resources/Vre_stor.csv
@@ -0,0 +1,9 @@
+Resource,Zone,SOLAR,WIND,STOR_DC_DISCHARGE,STOR_DC_CHARGE,STOR_AC_DISCHARGE,STOR_AC_CHARGE,LDS_VRE_STOR,New_Build,Can_Retire,Existing_Cap_MW,Existing_Cap_MWh,Existing_Cap_Inverter_MW,Existing_Cap_Solar_MW,Existing_Cap_Wind_MW,Existing_Cap_Discharge_DC_MW,Existing_Cap_Charge_DC_MW,Existing_Cap_Discharge_AC_MW,Existing_Cap_Charge_AC_MW,Min_Cap_MW,Min_Cap_MWh,Min_Cap_Inverter_MW,Min_Cap_Solar_MW,Min_Cap_Wind_MW,Min_Cap_Discharge_DC_MW,Min_Cap_Charge_DC_MW,Min_Cap_Discharge_AC_MW,Min_Cap_Charge_AC_MW,Max_Cap_MW,Max_Cap_MWh,Max_Cap_Inverter_MW,Max_Cap_Solar_MW,Max_Cap_Wind_MW,Max_Cap_Discharge_DC_MW,Max_Cap_Charge_DC_MW,Max_Cap_Discharge_AC_MW,Max_Cap_Charge_AC_MW,Inv_Cost_per_MWyr,Fixed_OM_Cost_per_MWyr,Inv_Cost_per_MWhyr,Fixed_OM_Cost_per_MWhyr,Var_OM_Cost_per_MWh,Inv_Cost_Inverter_per_MWyr,Inv_Cost_Solar_per_MWyr,Inv_Cost_Wind_per_MWyr,Inv_Cost_Discharge_DC_per_MWyr,Inv_Cost_Charge_DC_per_MWyr,Inv_Cost_Discharge_AC_per_MWyr,Inv_Cost_Charge_AC_per_MWyr,Fixed_OM_Inverter_Cost_per_MWyr,Fixed_OM_Solar_Cost_per_MWyr,Fixed_OM_Wind_Cost_per_MWyr,Fixed_OM_Cost_Discharge_DC_per_MWyr,Fixed_OM_Cost_Charge_DC_per_MWyr,Fixed_OM_Cost_Discharge_AC_per_MWyr,Fixed_OM_Cost_Charge_AC_per_MWyr,Var_OM_Cost_per_MWh_Solar,Var_OM_Cost_per_MWh_Wind,Var_OM_Cost_per_MWh_Discharge_DC,Var_OM_Cost_per_MWh_Charge_DC,Var_OM_Cost_per_MWh_Discharge_AC,Var_OM_Cost_per_MWh_Charge_AC,EtaInverter,Inverter_Ratio_Wind,Inverter_Ratio_Solar,Power_to_Energy_DC,Power_to_Energy_AC,Self_Disch,Eff_Up_DC,Eff_Down_DC,Eff_Up_AC,Eff_Down_AC,region,cluster
+landbasedwind_class1_moderate,1,0,1,1,1,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-1,-1,-1,-1,117315.5,-1,-1,-1,-1,14198,0,0,0,0.15,7522,0,56816,0,0,0,0,1875,0,36613,0,0,0,0,0,0,0.15,0.15,0,0,0.967,-1,-1,0.005,0.005,0,0.65,0.65,0.65,0.65,NE,0
+utilitypv_class1_moderate,1,1,0,1,1,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-1,-1,-1,1351663.04,-1,-1,-1,-1,-1,8863,0,0,0,0.15,7522,22706,0,0,0,0,0,1875,12550,0,0,0,0,0,0,0,0.15,0.15,0,0,0.967,-1,-1,0.005,0.005,0,0.65,0.65,0.65,0.65,NE,0
+storage_sym_discharge,1,0,0,1,1,0,0,1,1,1,0,0,0,0,0,0,0,0,0,-1,0,0,0,0,0,0,0,0,-1,-1,-1,-1,-1,-1,-1,-1,-1,0,0,0,0,0.15,7522,0,0,0,0,0,0,1875,0,0,0,0,0,0,0,0,0.15,0.15,0,0,0.967,-1,-1,0.005,0.005,0,0.65,0.65,0.65,0.65,NE,0
+storage_asym_ac_discharge,1,0,0,0,0,2,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-1,-1,-1,-1,-1,-1,-1,-1,-1,0,0,0,0,0.15,7303,0,0,0,0,0,0,1875,0,0,0,0,0,0,0,0,0.15,0.15,0,0,0.967,-1,-1,0.005,0.005,0,0.65,0.65,0.65,0.65,NE,0
+storage_asym_dc_discharge,1,0,0,2,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-1,-1,-1,-1,-1,-1,-1,-1,-1,0,0,0,0,0.15,7303,0,0,0,0,0,0,1875,0,0,0,0,0,0,0,0,0.15,0.15,0,0,0.967,-1,-1,0.005,0.005,0,0.65,0.65,0.65,0.65,NE,0
+storage_sym_charge,1,0,0,0,0,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-1,-1,-1,-1,-1,-1,-1,-1,-1,0,0,0,0,0.15,7609,0,0,0,0,0,0,1875,0,0,0,0,0,0,0,0,0.15,0.15,0,0,0.967,-1,-1,0.005,0.005,0,0.65,0.65,0.65,0.65,NE,0
+storage_asym_ac_charge,1,0,0,0,0,0,2,1,1,1,0,0,0,0,0,0,0,0,0,-1,0,0,0,0,0,0,0,0,-1,-1,-1,-1,-1,-1,-1,-1,-1,0,0,0,0,0.15,7609,0,0,0,0,0,0,1875,0,0,0,0,0,0,0,0,0.15,0.15,0,0,0.967,-1,-1,0.005,0.005,0,0.65,0.65,0.65,0.65,NE,0
+storage_asym_dc_charge,1,0,0,0,2,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-1,-1,-1,-1,-1,-1,-1,-1,-1,0,0,0,0,0.15,7609,0,0,0,0,0,0,1875,0,0,0,0,0,0,0,0,0.15,0.15,0,0,0.967,-1,-1,0.005,0.005,0,0.65,0.65,0.65,0.65,NE,0
\ No newline at end of file
diff --git a/test/multi_stage/cum_min_ret/inputs_p1/system/Demand_data.csv b/test/multi_stage/cum_min_ret/inputs_p1/system/Demand_data.csv
new file mode 100644
index 0000000000..473c675be1
--- /dev/null
+++ b/test/multi_stage/cum_min_ret/inputs_p1/system/Demand_data.csv
@@ -0,0 +1,121 @@
+Voll,Demand_Segment,Cost_of_Demand_Curtailment_per_MW,Max_Demand_Curtailment,Rep_Periods,Timesteps_per_Rep_Period,Sub_Weights,Time_Index,Demand_MW_z1
+50000,1,1,1,5,24,24.0,1,11122.0
+,,,,,,3672.0,2,10655.0
+,,,,,,5016.0,3,10441.0
+,,,,,,24.0,4,10365.0
+,,,,,,24.0,5,10639.0
+,,,,,,,6,11577.0
+,,,,,,,7,13349.0
+,,,,,,,8,14550.0
+,,,,,,,9,14922.0
+,,,,,,,10,15165.0
+,,,,,,,11,15328.0
+,,,,,,,12,15380.0
+,,,,,,,13,15275.0
+,,,,,,,14,15154.0
+,,,,,,,15,14953.0
+,,,,,,,16,14885.0
+,,,,,,,17,15340.0
+,,,,,,,18,16003.0
+,,,,,,,19,15767.0
+,,,,,,,20,15236.0
+,,,,,,,21,14663.0
+,,,,,,,22,13889.0
+,,,,,,,23,12855.0
+,,,,,,,24,11809.0
+,,,,,,,25,9702.0
+,,,,,,,26,9229.0
+,,,,,,,27,9004.0
+,,,,,,,28,8951.0
+,,,,,,,29,9188.0
+,,,,,,,30,10087.0
+,,,,,,,31,11929.0
+,,,,,,,32,13166.0
+,,,,,,,33,13504.0
+,,,,,,,34,13632.0
+,,,,,,,35,13724.0
+,,,,,,,36,13742.0
+,,,,,,,37,13665.0
+,,,,,,,38,13641.0
+,,,,,,,39,13501.0
+,,,,,,,40,13366.0
+,,,,,,,41,13376.0
+,,,,,,,42,13524.0
+,,,,,,,43,13736.0
+,,,,,,,44,14401.0
+,,,,,,,45,14006.0
+,,,,,,,46,13006.0
+,,,,,,,47,11658.0
+,,,,,,,48,10416.0
+,,,,,,,49,10219.0
+,,,,,,,50,9671.0
+,,,,,,,51,9383.0
+,,,,,,,52,9269.0
+,,,,,,,53,9483.0
+,,,,,,,54,10103.0
+,,,,,,,55,11573.0
+,,,,,,,56,13059.0
+,,,,,,,57,13905.0
+,,,,,,,58,14430.0
+,,,,,,,59,14873.0
+,,,,,,,60,15179.0
+,,,,,,,61,15323.0
+,,,,,,,62,15515.0
+,,,,,,,63,15537.0
+,,,,,,,64,15481.0
+,,,,,,,65,15485.0
+,,,,,,,66,15440.0
+,,,,,,,67,15208.0
+,,,,,,,68,15028.0
+,,,,,,,69,15221.0
+,,,,,,,70,14913.0
+,,,,,,,71,13573.0
+,,,,,,,72,12159.0
+,,,,,,,73,14935.0
+,,,,,,,74,14062.0
+,,,,,,,75,13498.0
+,,,,,,,76,13146.0
+,,,,,,,77,13178.0
+,,,,,,,78,13712.0
+,,,,,,,79,15192.0
+,,,,,,,80,17114.0
+,,,,,,,81,18656.0
+,,,,,,,82,20020.0
+,,,,,,,83,21201.0
+,,,,,,,84,22009.0
+,,,,,,,85,22567.0
+,,,,,,,86,23070.0
+,,,,,,,87,23388.0
+,,,,,,,88,23629.0
+,,,,,,,89,23770.0
+,,,,,,,90,23575.0
+,,,,,,,91,23034.0
+,,,,,,,92,22325.0
+,,,,,,,93,21921.0
+,,,,,,,94,21122.0
+,,,,,,,95,19311.0
+,,,,,,,96,17514.0
+,,,,,,,97,11232.0
+,,,,,,,98,10825.0
+,,,,,,,99,10632.0
+,,,,,,,100,10622.0
+,,,,,,,101,10948.0
+,,,,,,,102,11984.0
+,,,,,,,103,13879.0
+,,,,,,,104,14890.0
+,,,,,,,105,15134.0
+,,,,,,,106,15241.0
+,,,,,,,107,15360.0
+,,,,,,,108,15407.0
+,,,,,,,109,15385.0
+,,,,,,,110,15372.0
+,,,,,,,111,15285.0
+,,,,,,,112,15482.0
+,,,,,,,113,16544.0
+,,,,,,,114,17247.0
+,,,,,,,115,17114.0
+,,,,,,,116,16657.0
+,,,,,,,117,15936.0
+,,,,,,,118,14783.0
+,,,,,,,119,13342.0
+,,,,,,,120,12052.0
diff --git a/test/multi_stage/cum_min_ret/inputs_p2/resources/Resource_multistage_data.csv b/test/multi_stage/cum_min_ret/inputs_p2/resources/Resource_multistage_data.csv
new file mode 100644
index 0000000000..2f45040f7c
--- /dev/null
+++ b/test/multi_stage/cum_min_ret/inputs_p2/resources/Resource_multistage_data.csv
@@ -0,0 +1,14 @@
+Resource,WACC,Capital_Recovery_Period,capital_recovery_period_dc,tech_wacc_dc,capital_recovery_period_solar,tech_wacc_solar,capital_recovery_period_wind,tech_wacc_wind,capital_recovery_period_discharge_dc,tech_wacc_discharge_dc,capital_recovery_period_charge_dc,tech_wacc_charge_dc,capital_recovery_period_discharge_ac,tech_wacc_discharge_ac,capital_recovery_period_charge_ac,tech_wacc_charge_ac,Lifetime,Min_Retired_Cap_MW,Min_Retired_Energy_Cap_MW,Min_Retired_Charge_Cap_MW,Min_Retired_Cap_Inverter_MW,Min_Retired_Cap_Solar_MW,Min_Retired_Cap_Wind_MW,Min_Retired_Cap_Charge_DC_MW,Min_Retired_Cap_Charge_AC_MW,Min_Retired_Cap_Discharge_DC_MW,Min_Retired_Cap_Discharge_AC_MW
+natural_gas_combined_cycle,0.039,20,30,0.139,40,0.239,50,0.339,60,0.439,70,0.539,80,0.639,90,0.739,20,31,0,0,0,0,0,0,0,0,0
+solar_pv,0.017,20,30,0.117,40,0.217,50,0.317,60,0.417,70,0.517,80,0.617,90,0.717,20,41,0,0,0,0,0,0,0,0,0
+onshore_wind,0.024,20,30,0.124,40,0.224,50,0.324,60,0.424,70,0.524,80,0.624,90,0.724,20,11,0,0,0,0,0,0,0,0,0
+battery_sym,0.024,20,30,0.124,40,0.224,50,0.324,60,0.424,70,0.524,80,0.624,90,0.724,20,6,16,0,0,0,0,0,0,0,0
+battery_asym,0.027,20,30,0.127,40,0.227,50,0.327,60,0.427,70,0.527,80,0.627,90,0.727,20,7,17,27,0,0,0,0,0,0,0
+landbasedwind_class1_moderate,0.027,20,30,0.127,40,0.227,50,0.327,60,0.427,70,0.527,80,0.627,90,0.727,20,8,0,0,0,0,11,0,0,0,0
+utilitypv_class1_moderate,0.027,20,30,0.127,40,0.227,50,0.327,60,0.427,70,0.527,80,0.627,90,0.727,20,9,0,0,28,21,0,0,0,0,0
+storage_sym_discharge,0.027,20,30,0.127,40,0.227,50,0.327,60,0.427,70,0.527,80,0.627,90,0.727,20,10,18,0,0,0,0,0,0,0,0
+storage_asym_ac_discharge,0.027,20,30,0.127,40,0.227,50,0.327,60,0.427,70,0.527,80,0.627,90,0.727,20,11,19,0,0,0,0,0,0,0,34
+storage_asym_dc_discharge,0.027,20,30,0.127,40,0.227,50,0.327,60,0.427,70,0.527,80,0.627,90,0.727,20,12,20,0,29,0,0,0,0,33,0
+storage_sym_charge,0.027,20,30,0.127,40,0.227,50,0.327,60,0.427,70,0.527,80,0.627,90,0.727,20,13,21,0,0,0,0,0,0,0,0
+storage_asym_ac_charge,0.027,20,30,0.127,40,0.227,50,0.327,60,0.427,70,0.527,80,0.627,90,0.727,20,14,22,0,0,0,0,0,32,0,0
+storage_asym_dc_charge,0.027,20,30,0.127,40,0.227,50,0.327,60,0.427,70,0.527,80,0.627,90,0.727,20,15,23,0,30,0,0,31,0,0,0
\ No newline at end of file
diff --git a/test/multi_stage/cum_min_ret/inputs_p2/resources/Storage.csv b/test/multi_stage/cum_min_ret/inputs_p2/resources/Storage.csv
new file mode 100644
index 0000000000..727788b728
--- /dev/null
+++ b/test/multi_stage/cum_min_ret/inputs_p2/resources/Storage.csv
@@ -0,0 +1,3 @@
+Resource,Zone,Model,New_Build,Can_Retire,Existing_Cap_MW,Existing_Cap_MWh,Max_Cap_MW,Max_Cap_MWh,Min_Cap_MW,Min_Cap_MWh,Inv_Cost_per_MWyr,Inv_Cost_per_MWhyr,Fixed_OM_Cost_per_MWyr,Fixed_OM_Cost_per_MWhyr,Fixed_OM_Cost_Charge_per_MWyr,Var_OM_Cost_per_MWh,Var_OM_Cost_per_MWh_In,Self_disch,Eff_Up,Eff_Down,Min_Duration,Max_Duration,Resource_Type,region,cluster
+battery_sym,1,1,1,1,0,0,-1,-1,0,0,19584,22494,4895,5622,5622,0.15,0.15,0,0.92,0.92,1,10,battery_mid,NE,0
+battery_asym,1,2,1,1,0,0,-1,-1,0,0,19584,22494,4895,5622,5622,0.15,0.15,0,0.92,0.92,1,10,battery_mid,NE,0
\ No newline at end of file
diff --git a/test/multi_stage/cum_min_ret/inputs_p2/resources/Thermal.csv b/test/multi_stage/cum_min_ret/inputs_p2/resources/Thermal.csv
new file mode 100644
index 0000000000..865619f951
--- /dev/null
+++ b/test/multi_stage/cum_min_ret/inputs_p2/resources/Thermal.csv
@@ -0,0 +1,2 @@
+Resource,Zone,Model,New_Build,Can_Retire,Existing_Cap_MW,Max_Cap_MW,Min_Cap_MW,Inv_Cost_per_MWyr,Fixed_OM_Cost_per_MWyr,Var_OM_Cost_per_MWh,Heat_Rate_MMBTU_per_MWh,Fuel,Cap_Size,Start_Cost_per_MW,Start_Fuel_MMBTU_per_MW,Up_Time,Down_Time,Ramp_Up_Percentage,Ramp_Dn_Percentage,Min_Power,Reg_Max,Rsv_Max,Reg_Cost,Rsv_Cost,MGA,Resource_Type,region,cluster
+natural_gas_combined_cycle,1,1,0,1,10000,-1,0,65400,10287,3.55,7.43,NG,250,91,2,6,6,0.64,0.64,0.468,0.25,0.5,0,0,1,natural_gas_fired_combined_cycle,NE,1
\ No newline at end of file
diff --git a/test/multi_stage/cum_min_ret/inputs_p2/resources/Vre.csv b/test/multi_stage/cum_min_ret/inputs_p2/resources/Vre.csv
new file mode 100644
index 0000000000..b6f20427d5
--- /dev/null
+++ b/test/multi_stage/cum_min_ret/inputs_p2/resources/Vre.csv
@@ -0,0 +1,3 @@
+Resource,Zone,Num_VRE_Bins,New_Build,Can_Retire,Existing_Cap_MW,Max_Cap_MW,Min_Cap_MW,Inv_Cost_per_MWyr,Fixed_OM_Cost_per_MWyr,Var_OM_Cost_per_MWh,Heat_Rate_MMBTU_per_MWh,MGA,Resource_Type,region,cluster
+solar_pv,1,1,1,1,500,-1,0,85300,18760,0,9.13,1,solar_photovoltaic,NE,1
+onshore_wind,1,1,1,1,1000,-1,0,97200,43205,0.1,9.12,1,onshore_wind_turbine,NE,1
\ No newline at end of file
diff --git a/test/multi_stage/cum_min_ret/inputs_p2/resources/Vre_stor.csv b/test/multi_stage/cum_min_ret/inputs_p2/resources/Vre_stor.csv
new file mode 100644
index 0000000000..dce1b2d7e2
--- /dev/null
+++ b/test/multi_stage/cum_min_ret/inputs_p2/resources/Vre_stor.csv
@@ -0,0 +1,9 @@
+Resource,Zone,SOLAR,WIND,STOR_DC_DISCHARGE,STOR_DC_CHARGE,STOR_AC_DISCHARGE,STOR_AC_CHARGE,LDS_VRE_STOR,New_Build,Can_Retire,Existing_Cap_MW,Existing_Cap_MWh,Existing_Cap_Inverter_MW,Existing_Cap_Solar_MW,Existing_Cap_Wind_MW,Existing_Cap_Discharge_DC_MW,Existing_Cap_Charge_DC_MW,Existing_Cap_Discharge_AC_MW,Existing_Cap_Charge_AC_MW,Min_Cap_MW,Min_Cap_MWh,Min_Cap_Inverter_MW,Min_Cap_Solar_MW,Min_Cap_Wind_MW,Min_Cap_Discharge_DC_MW,Min_Cap_Charge_DC_MW,Min_Cap_Discharge_AC_MW,Min_Cap_Charge_AC_MW,Max_Cap_MW,Max_Cap_MWh,Max_Cap_Inverter_MW,Max_Cap_Solar_MW,Max_Cap_Wind_MW,Max_Cap_Discharge_DC_MW,Max_Cap_Charge_DC_MW,Max_Cap_Discharge_AC_MW,Max_Cap_Charge_AC_MW,Inv_Cost_per_MWyr,Fixed_OM_Cost_per_MWyr,Inv_Cost_per_MWhyr,Fixed_OM_Cost_per_MWhyr,Var_OM_Cost_per_MWh,Inv_Cost_Inverter_per_MWyr,Inv_Cost_Solar_per_MWyr,Inv_Cost_Wind_per_MWyr,Inv_Cost_Discharge_DC_per_MWyr,Inv_Cost_Charge_DC_per_MWyr,Inv_Cost_Discharge_AC_per_MWyr,Inv_Cost_Charge_AC_per_MWyr,Fixed_OM_Inverter_Cost_per_MWyr,Fixed_OM_Solar_Cost_per_MWyr,Fixed_OM_Wind_Cost_per_MWyr,Fixed_OM_Cost_Discharge_DC_per_MWyr,Fixed_OM_Cost_Charge_DC_per_MWyr,Fixed_OM_Cost_Discharge_AC_per_MWyr,Fixed_OM_Cost_Charge_AC_per_MWyr,Var_OM_Cost_per_MWh_Solar,Var_OM_Cost_per_MWh_Wind,Var_OM_Cost_per_MWh_Discharge_DC,Var_OM_Cost_per_MWh_Charge_DC,Var_OM_Cost_per_MWh_Discharge_AC,Var_OM_Cost_per_MWh_Charge_AC,EtaInverter,Inverter_Ratio_Wind,Inverter_Ratio_Solar,Power_to_Energy_DC,Power_to_Energy_AC,Self_Disch,Eff_Up_DC,Eff_Down_DC,Eff_Up_AC,Eff_Down_AC,region,cluster
+landbasedwind_class1_moderate,1,0,1,1,1,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-1,-1,-1,-1,117315.5,-1,-1,-1,-1,14198,0,0,0,0.15,7522,0,56816,0,0,0,0,1875,0,36613,0,0,0,0,0,0,0.15,0.15,0,0,0.967,-1,-1,0.005,0.005,0,0.65,0.65,0.65,0.65,NE,0
+utilitypv_class1_moderate,1,1,0,1,1,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-1,-1,-1,1351663.04,-1,-1,-1,-1,-1,8863,0,0,0,0.15,7522,22706,0,0,0,0,0,1875,12550,0,0,0,0,0,0,0,0.15,0.15,0,0,0.967,-1,-1,0.005,0.005,0,0.65,0.65,0.65,0.65,NE,0
+storage_sym_discharge,1,0,0,1,1,0,0,1,1,1,0,0,0,0,0,0,0,0,0,-1,0,0,0,0,0,0,0,0,-1,-1,-1,-1,-1,-1,-1,-1,-1,0,0,0,0,0.15,7522,0,0,0,0,0,0,1875,0,0,0,0,0,0,0,0,0.15,0.15,0,0,0.967,-1,-1,0.005,0.005,0,0.65,0.65,0.65,0.65,NE,0
+storage_asym_ac_discharge,1,0,0,0,0,2,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-1,-1,-1,-1,-1,-1,-1,-1,-1,0,0,0,0,0.15,7303,0,0,0,0,0,0,1875,0,0,0,0,0,0,0,0,0.15,0.15,0,0,0.967,-1,-1,0.005,0.005,0,0.65,0.65,0.65,0.65,NE,0
+storage_asym_dc_discharge,1,0,0,2,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-1,-1,-1,-1,-1,-1,-1,-1,-1,0,0,0,0,0.15,7303,0,0,0,0,0,0,1875,0,0,0,0,0,0,0,0,0.15,0.15,0,0,0.967,-1,-1,0.005,0.005,0,0.65,0.65,0.65,0.65,NE,0
+storage_sym_charge,1,0,0,0,0,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-1,-1,-1,-1,-1,-1,-1,-1,-1,0,0,0,0,0.15,7609,0,0,0,0,0,0,1875,0,0,0,0,0,0,0,0,0.15,0.15,0,0,0.967,-1,-1,0.005,0.005,0,0.65,0.65,0.65,0.65,NE,0
+storage_asym_ac_charge,1,0,0,0,0,0,2,1,1,1,0,0,0,0,0,0,0,0,0,-1,0,0,0,0,0,0,0,0,-1,-1,-1,-1,-1,-1,-1,-1,-1,0,0,0,0,0.15,7609,0,0,0,0,0,0,1875,0,0,0,0,0,0,0,0,0.15,0.15,0,0,0.967,-1,-1,0.005,0.005,0,0.65,0.65,0.65,0.65,NE,0
+storage_asym_dc_charge,1,0,0,0,2,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-1,-1,-1,-1,-1,-1,-1,-1,-1,0,0,0,0,0.15,7609,0,0,0,0,0,0,1875,0,0,0,0,0,0,0,0,0.15,0.15,0,0,0.967,-1,-1,0.005,0.005,0,0.65,0.65,0.65,0.65,NE,0
\ No newline at end of file
diff --git a/test/multi_stage/cum_min_ret/inputs_p2/system/Demand_data.csv b/test/multi_stage/cum_min_ret/inputs_p2/system/Demand_data.csv
new file mode 100644
index 0000000000..473c675be1
--- /dev/null
+++ b/test/multi_stage/cum_min_ret/inputs_p2/system/Demand_data.csv
@@ -0,0 +1,121 @@
+Voll,Demand_Segment,Cost_of_Demand_Curtailment_per_MW,Max_Demand_Curtailment,Rep_Periods,Timesteps_per_Rep_Period,Sub_Weights,Time_Index,Demand_MW_z1
+50000,1,1,1,5,24,24.0,1,11122.0
+,,,,,,3672.0,2,10655.0
+,,,,,,5016.0,3,10441.0
+,,,,,,24.0,4,10365.0
+,,,,,,24.0,5,10639.0
+,,,,,,,6,11577.0
+,,,,,,,7,13349.0
+,,,,,,,8,14550.0
+,,,,,,,9,14922.0
+,,,,,,,10,15165.0
+,,,,,,,11,15328.0
+,,,,,,,12,15380.0
+,,,,,,,13,15275.0
+,,,,,,,14,15154.0
+,,,,,,,15,14953.0
+,,,,,,,16,14885.0
+,,,,,,,17,15340.0
+,,,,,,,18,16003.0
+,,,,,,,19,15767.0
+,,,,,,,20,15236.0
+,,,,,,,21,14663.0
+,,,,,,,22,13889.0
+,,,,,,,23,12855.0
+,,,,,,,24,11809.0
+,,,,,,,25,9702.0
+,,,,,,,26,9229.0
+,,,,,,,27,9004.0
+,,,,,,,28,8951.0
+,,,,,,,29,9188.0
+,,,,,,,30,10087.0
+,,,,,,,31,11929.0
+,,,,,,,32,13166.0
+,,,,,,,33,13504.0
+,,,,,,,34,13632.0
+,,,,,,,35,13724.0
+,,,,,,,36,13742.0
+,,,,,,,37,13665.0
+,,,,,,,38,13641.0
+,,,,,,,39,13501.0
+,,,,,,,40,13366.0
+,,,,,,,41,13376.0
+,,,,,,,42,13524.0
+,,,,,,,43,13736.0
+,,,,,,,44,14401.0
+,,,,,,,45,14006.0
+,,,,,,,46,13006.0
+,,,,,,,47,11658.0
+,,,,,,,48,10416.0
+,,,,,,,49,10219.0
+,,,,,,,50,9671.0
+,,,,,,,51,9383.0
+,,,,,,,52,9269.0
+,,,,,,,53,9483.0
+,,,,,,,54,10103.0
+,,,,,,,55,11573.0
+,,,,,,,56,13059.0
+,,,,,,,57,13905.0
+,,,,,,,58,14430.0
+,,,,,,,59,14873.0
+,,,,,,,60,15179.0
+,,,,,,,61,15323.0
+,,,,,,,62,15515.0
+,,,,,,,63,15537.0
+,,,,,,,64,15481.0
+,,,,,,,65,15485.0
+,,,,,,,66,15440.0
+,,,,,,,67,15208.0
+,,,,,,,68,15028.0
+,,,,,,,69,15221.0
+,,,,,,,70,14913.0
+,,,,,,,71,13573.0
+,,,,,,,72,12159.0
+,,,,,,,73,14935.0
+,,,,,,,74,14062.0
+,,,,,,,75,13498.0
+,,,,,,,76,13146.0
+,,,,,,,77,13178.0
+,,,,,,,78,13712.0
+,,,,,,,79,15192.0
+,,,,,,,80,17114.0
+,,,,,,,81,18656.0
+,,,,,,,82,20020.0
+,,,,,,,83,21201.0
+,,,,,,,84,22009.0
+,,,,,,,85,22567.0
+,,,,,,,86,23070.0
+,,,,,,,87,23388.0
+,,,,,,,88,23629.0
+,,,,,,,89,23770.0
+,,,,,,,90,23575.0
+,,,,,,,91,23034.0
+,,,,,,,92,22325.0
+,,,,,,,93,21921.0
+,,,,,,,94,21122.0
+,,,,,,,95,19311.0
+,,,,,,,96,17514.0
+,,,,,,,97,11232.0
+,,,,,,,98,10825.0
+,,,,,,,99,10632.0
+,,,,,,,100,10622.0
+,,,,,,,101,10948.0
+,,,,,,,102,11984.0
+,,,,,,,103,13879.0
+,,,,,,,104,14890.0
+,,,,,,,105,15134.0
+,,,,,,,106,15241.0
+,,,,,,,107,15360.0
+,,,,,,,108,15407.0
+,,,,,,,109,15385.0
+,,,,,,,110,15372.0
+,,,,,,,111,15285.0
+,,,,,,,112,15482.0
+,,,,,,,113,16544.0
+,,,,,,,114,17247.0
+,,,,,,,115,17114.0
+,,,,,,,116,16657.0
+,,,,,,,117,15936.0
+,,,,,,,118,14783.0
+,,,,,,,119,13342.0
+,,,,,,,120,12052.0
diff --git a/test/multi_stage/cum_min_ret/inputs_p3/resources/Resource_multistage_data.csv b/test/multi_stage/cum_min_ret/inputs_p3/resources/Resource_multistage_data.csv
new file mode 100644
index 0000000000..e55d1ced97
--- /dev/null
+++ b/test/multi_stage/cum_min_ret/inputs_p3/resources/Resource_multistage_data.csv
@@ -0,0 +1,14 @@
+Resource,WACC,Capital_Recovery_Period,capital_recovery_period_dc,tech_wacc_dc,capital_recovery_period_solar,tech_wacc_solar,capital_recovery_period_wind,tech_wacc_wind,capital_recovery_period_discharge_dc,tech_wacc_discharge_dc,capital_recovery_period_charge_dc,tech_wacc_charge_dc,capital_recovery_period_discharge_ac,tech_wacc_discharge_ac,capital_recovery_period_charge_ac,tech_wacc_charge_ac,Lifetime,Min_Retired_Cap_MW,Min_Retired_Energy_Cap_MW,Min_Retired_Charge_Cap_MW,Min_Retired_Cap_Inverter_MW,Min_Retired_Cap_Solar_MW,Min_Retired_Cap_Wind_MW,Min_Retired_Cap_Charge_DC_MW,Min_Retired_Cap_Charge_AC_MW,Min_Retired_Cap_Discharge_DC_MW,Min_Retired_Cap_Discharge_AC_MW
+natural_gas_combined_cycle,0.039,20,30,0.139,40,0.239,50,0.339,60,0.439,70,0.539,80,0.639,90,0.739,20,32,0,0,0,0,0,0,0,0,0
+solar_pv,0.017,20,30,0.117,40,0.217,50,0.317,60,0.417,70,0.517,80,0.617,90,0.717,20,42,0,0,0,0,0,0,0,0,0
+onshore_wind,0.024,20,30,0.124,40,0.224,50,0.324,60,0.424,70,0.524,80,0.624,90,0.724,20,12,0,0,0,0,0,0,0,0,0
+battery_sym,0.024,20,30,0.124,40,0.224,50,0.324,60,0.424,70,0.524,80,0.624,90,0.724,20,7,17,0,0,0,0,0,0,0,0
+battery_asym,0.027,20,30,0.127,40,0.227,50,0.327,60,0.427,70,0.527,80,0.627,90,0.727,20,8,18,28,0,0,0,0,0,0,0
+landbasedwind_class1_moderate,0.027,20,30,0.127,40,0.227,50,0.327,60,0.427,70,0.527,80,0.627,90,0.727,20,9,0,0,0,0,12,0,0,0,0
+utilitypv_class1_moderate,0.027,20,30,0.127,40,0.227,50,0.327,60,0.427,70,0.527,80,0.627,90,0.727,20,10,0,0,29,22,0,0,0,0,0
+storage_sym_discharge,0.027,20,30,0.127,40,0.227,50,0.327,60,0.427,70,0.527,80,0.627,90,0.727,20,11,19,0,0,0,0,0,0,0,0
+storage_asym_ac_discharge,0.027,20,30,0.127,40,0.227,50,0.327,60,0.427,70,0.527,80,0.627,90,0.727,20,12,20,0,0,0,0,0,0,0,35
+storage_asym_dc_discharge,0.027,20,30,0.127,40,0.227,50,0.327,60,0.427,70,0.527,80,0.627,90,0.727,20,13,21,0,30,0,0,0,0,34,0
+storage_sym_charge,0.027,20,30,0.127,40,0.227,50,0.327,60,0.427,70,0.527,80,0.627,90,0.727,20,14,22,0,0,0,0,0,0,0,0
+storage_asym_ac_charge,0.027,20,30,0.127,40,0.227,50,0.327,60,0.427,70,0.527,80,0.627,90,0.727,20,15,23,0,0,0,0,0,33,0,0
+storage_asym_dc_charge,0.027,20,30,0.127,40,0.227,50,0.327,60,0.427,70,0.527,80,0.627,90,0.727,20,16,24,0,31,0,0,32,0,0,0
\ No newline at end of file
diff --git a/test/multi_stage/cum_min_ret/inputs_p3/resources/Storage.csv b/test/multi_stage/cum_min_ret/inputs_p3/resources/Storage.csv
new file mode 100644
index 0000000000..727788b728
--- /dev/null
+++ b/test/multi_stage/cum_min_ret/inputs_p3/resources/Storage.csv
@@ -0,0 +1,3 @@
+Resource,Zone,Model,New_Build,Can_Retire,Existing_Cap_MW,Existing_Cap_MWh,Max_Cap_MW,Max_Cap_MWh,Min_Cap_MW,Min_Cap_MWh,Inv_Cost_per_MWyr,Inv_Cost_per_MWhyr,Fixed_OM_Cost_per_MWyr,Fixed_OM_Cost_per_MWhyr,Fixed_OM_Cost_Charge_per_MWyr,Var_OM_Cost_per_MWh,Var_OM_Cost_per_MWh_In,Self_disch,Eff_Up,Eff_Down,Min_Duration,Max_Duration,Resource_Type,region,cluster
+battery_sym,1,1,1,1,0,0,-1,-1,0,0,19584,22494,4895,5622,5622,0.15,0.15,0,0.92,0.92,1,10,battery_mid,NE,0
+battery_asym,1,2,1,1,0,0,-1,-1,0,0,19584,22494,4895,5622,5622,0.15,0.15,0,0.92,0.92,1,10,battery_mid,NE,0
\ No newline at end of file
diff --git a/test/multi_stage/cum_min_ret/inputs_p3/resources/Thermal.csv b/test/multi_stage/cum_min_ret/inputs_p3/resources/Thermal.csv
new file mode 100644
index 0000000000..865619f951
--- /dev/null
+++ b/test/multi_stage/cum_min_ret/inputs_p3/resources/Thermal.csv
@@ -0,0 +1,2 @@
+Resource,Zone,Model,New_Build,Can_Retire,Existing_Cap_MW,Max_Cap_MW,Min_Cap_MW,Inv_Cost_per_MWyr,Fixed_OM_Cost_per_MWyr,Var_OM_Cost_per_MWh,Heat_Rate_MMBTU_per_MWh,Fuel,Cap_Size,Start_Cost_per_MW,Start_Fuel_MMBTU_per_MW,Up_Time,Down_Time,Ramp_Up_Percentage,Ramp_Dn_Percentage,Min_Power,Reg_Max,Rsv_Max,Reg_Cost,Rsv_Cost,MGA,Resource_Type,region,cluster
+natural_gas_combined_cycle,1,1,0,1,10000,-1,0,65400,10287,3.55,7.43,NG,250,91,2,6,6,0.64,0.64,0.468,0.25,0.5,0,0,1,natural_gas_fired_combined_cycle,NE,1
\ No newline at end of file
diff --git a/test/multi_stage/cum_min_ret/inputs_p3/resources/Vre.csv b/test/multi_stage/cum_min_ret/inputs_p3/resources/Vre.csv
new file mode 100644
index 0000000000..b6f20427d5
--- /dev/null
+++ b/test/multi_stage/cum_min_ret/inputs_p3/resources/Vre.csv
@@ -0,0 +1,3 @@
+Resource,Zone,Num_VRE_Bins,New_Build,Can_Retire,Existing_Cap_MW,Max_Cap_MW,Min_Cap_MW,Inv_Cost_per_MWyr,Fixed_OM_Cost_per_MWyr,Var_OM_Cost_per_MWh,Heat_Rate_MMBTU_per_MWh,MGA,Resource_Type,region,cluster
+solar_pv,1,1,1,1,500,-1,0,85300,18760,0,9.13,1,solar_photovoltaic,NE,1
+onshore_wind,1,1,1,1,1000,-1,0,97200,43205,0.1,9.12,1,onshore_wind_turbine,NE,1
\ No newline at end of file
diff --git a/test/multi_stage/cum_min_ret/inputs_p3/resources/Vre_stor.csv b/test/multi_stage/cum_min_ret/inputs_p3/resources/Vre_stor.csv
new file mode 100644
index 0000000000..dce1b2d7e2
--- /dev/null
+++ b/test/multi_stage/cum_min_ret/inputs_p3/resources/Vre_stor.csv
@@ -0,0 +1,9 @@
+Resource,Zone,SOLAR,WIND,STOR_DC_DISCHARGE,STOR_DC_CHARGE,STOR_AC_DISCHARGE,STOR_AC_CHARGE,LDS_VRE_STOR,New_Build,Can_Retire,Existing_Cap_MW,Existing_Cap_MWh,Existing_Cap_Inverter_MW,Existing_Cap_Solar_MW,Existing_Cap_Wind_MW,Existing_Cap_Discharge_DC_MW,Existing_Cap_Charge_DC_MW,Existing_Cap_Discharge_AC_MW,Existing_Cap_Charge_AC_MW,Min_Cap_MW,Min_Cap_MWh,Min_Cap_Inverter_MW,Min_Cap_Solar_MW,Min_Cap_Wind_MW,Min_Cap_Discharge_DC_MW,Min_Cap_Charge_DC_MW,Min_Cap_Discharge_AC_MW,Min_Cap_Charge_AC_MW,Max_Cap_MW,Max_Cap_MWh,Max_Cap_Inverter_MW,Max_Cap_Solar_MW,Max_Cap_Wind_MW,Max_Cap_Discharge_DC_MW,Max_Cap_Charge_DC_MW,Max_Cap_Discharge_AC_MW,Max_Cap_Charge_AC_MW,Inv_Cost_per_MWyr,Fixed_OM_Cost_per_MWyr,Inv_Cost_per_MWhyr,Fixed_OM_Cost_per_MWhyr,Var_OM_Cost_per_MWh,Inv_Cost_Inverter_per_MWyr,Inv_Cost_Solar_per_MWyr,Inv_Cost_Wind_per_MWyr,Inv_Cost_Discharge_DC_per_MWyr,Inv_Cost_Charge_DC_per_MWyr,Inv_Cost_Discharge_AC_per_MWyr,Inv_Cost_Charge_AC_per_MWyr,Fixed_OM_Inverter_Cost_per_MWyr,Fixed_OM_Solar_Cost_per_MWyr,Fixed_OM_Wind_Cost_per_MWyr,Fixed_OM_Cost_Discharge_DC_per_MWyr,Fixed_OM_Cost_Charge_DC_per_MWyr,Fixed_OM_Cost_Discharge_AC_per_MWyr,Fixed_OM_Cost_Charge_AC_per_MWyr,Var_OM_Cost_per_MWh_Solar,Var_OM_Cost_per_MWh_Wind,Var_OM_Cost_per_MWh_Discharge_DC,Var_OM_Cost_per_MWh_Charge_DC,Var_OM_Cost_per_MWh_Discharge_AC,Var_OM_Cost_per_MWh_Charge_AC,EtaInverter,Inverter_Ratio_Wind,Inverter_Ratio_Solar,Power_to_Energy_DC,Power_to_Energy_AC,Self_Disch,Eff_Up_DC,Eff_Down_DC,Eff_Up_AC,Eff_Down_AC,region,cluster
+landbasedwind_class1_moderate,1,0,1,1,1,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-1,-1,-1,-1,117315.5,-1,-1,-1,-1,14198,0,0,0,0.15,7522,0,56816,0,0,0,0,1875,0,36613,0,0,0,0,0,0,0.15,0.15,0,0,0.967,-1,-1,0.005,0.005,0,0.65,0.65,0.65,0.65,NE,0
+utilitypv_class1_moderate,1,1,0,1,1,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-1,-1,-1,1351663.04,-1,-1,-1,-1,-1,8863,0,0,0,0.15,7522,22706,0,0,0,0,0,1875,12550,0,0,0,0,0,0,0,0.15,0.15,0,0,0.967,-1,-1,0.005,0.005,0,0.65,0.65,0.65,0.65,NE,0
+storage_sym_discharge,1,0,0,1,1,0,0,1,1,1,0,0,0,0,0,0,0,0,0,-1,0,0,0,0,0,0,0,0,-1,-1,-1,-1,-1,-1,-1,-1,-1,0,0,0,0,0.15,7522,0,0,0,0,0,0,1875,0,0,0,0,0,0,0,0,0.15,0.15,0,0,0.967,-1,-1,0.005,0.005,0,0.65,0.65,0.65,0.65,NE,0
+storage_asym_ac_discharge,1,0,0,0,0,2,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-1,-1,-1,-1,-1,-1,-1,-1,-1,0,0,0,0,0.15,7303,0,0,0,0,0,0,1875,0,0,0,0,0,0,0,0,0.15,0.15,0,0,0.967,-1,-1,0.005,0.005,0,0.65,0.65,0.65,0.65,NE,0
+storage_asym_dc_discharge,1,0,0,2,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-1,-1,-1,-1,-1,-1,-1,-1,-1,0,0,0,0,0.15,7303,0,0,0,0,0,0,1875,0,0,0,0,0,0,0,0,0.15,0.15,0,0,0.967,-1,-1,0.005,0.005,0,0.65,0.65,0.65,0.65,NE,0
+storage_sym_charge,1,0,0,0,0,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-1,-1,-1,-1,-1,-1,-1,-1,-1,0,0,0,0,0.15,7609,0,0,0,0,0,0,1875,0,0,0,0,0,0,0,0,0.15,0.15,0,0,0.967,-1,-1,0.005,0.005,0,0.65,0.65,0.65,0.65,NE,0
+storage_asym_ac_charge,1,0,0,0,0,0,2,1,1,1,0,0,0,0,0,0,0,0,0,-1,0,0,0,0,0,0,0,0,-1,-1,-1,-1,-1,-1,-1,-1,-1,0,0,0,0,0.15,7609,0,0,0,0,0,0,1875,0,0,0,0,0,0,0,0,0.15,0.15,0,0,0.967,-1,-1,0.005,0.005,0,0.65,0.65,0.65,0.65,NE,0
+storage_asym_dc_charge,1,0,0,0,2,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-1,-1,-1,-1,-1,-1,-1,-1,-1,0,0,0,0,0.15,7609,0,0,0,0,0,0,1875,0,0,0,0,0,0,0,0,0.15,0.15,0,0,0.967,-1,-1,0.005,0.005,0,0.65,0.65,0.65,0.65,NE,0
\ No newline at end of file
diff --git a/test/multi_stage/cum_min_ret/inputs_p3/system/Demand_data.csv b/test/multi_stage/cum_min_ret/inputs_p3/system/Demand_data.csv
new file mode 100644
index 0000000000..473c675be1
--- /dev/null
+++ b/test/multi_stage/cum_min_ret/inputs_p3/system/Demand_data.csv
@@ -0,0 +1,121 @@
+Voll,Demand_Segment,Cost_of_Demand_Curtailment_per_MW,Max_Demand_Curtailment,Rep_Periods,Timesteps_per_Rep_Period,Sub_Weights,Time_Index,Demand_MW_z1
+50000,1,1,1,5,24,24.0,1,11122.0
+,,,,,,3672.0,2,10655.0
+,,,,,,5016.0,3,10441.0
+,,,,,,24.0,4,10365.0
+,,,,,,24.0,5,10639.0
+,,,,,,,6,11577.0
+,,,,,,,7,13349.0
+,,,,,,,8,14550.0
+,,,,,,,9,14922.0
+,,,,,,,10,15165.0
+,,,,,,,11,15328.0
+,,,,,,,12,15380.0
+,,,,,,,13,15275.0
+,,,,,,,14,15154.0
+,,,,,,,15,14953.0
+,,,,,,,16,14885.0
+,,,,,,,17,15340.0
+,,,,,,,18,16003.0
+,,,,,,,19,15767.0
+,,,,,,,20,15236.0
+,,,,,,,21,14663.0
+,,,,,,,22,13889.0
+,,,,,,,23,12855.0
+,,,,,,,24,11809.0
+,,,,,,,25,9702.0
+,,,,,,,26,9229.0
+,,,,,,,27,9004.0
+,,,,,,,28,8951.0
+,,,,,,,29,9188.0
+,,,,,,,30,10087.0
+,,,,,,,31,11929.0
+,,,,,,,32,13166.0
+,,,,,,,33,13504.0
+,,,,,,,34,13632.0
+,,,,,,,35,13724.0
+,,,,,,,36,13742.0
+,,,,,,,37,13665.0
+,,,,,,,38,13641.0
+,,,,,,,39,13501.0
+,,,,,,,40,13366.0
+,,,,,,,41,13376.0
+,,,,,,,42,13524.0
+,,,,,,,43,13736.0
+,,,,,,,44,14401.0
+,,,,,,,45,14006.0
+,,,,,,,46,13006.0
+,,,,,,,47,11658.0
+,,,,,,,48,10416.0
+,,,,,,,49,10219.0
+,,,,,,,50,9671.0
+,,,,,,,51,9383.0
+,,,,,,,52,9269.0
+,,,,,,,53,9483.0
+,,,,,,,54,10103.0
+,,,,,,,55,11573.0
+,,,,,,,56,13059.0
+,,,,,,,57,13905.0
+,,,,,,,58,14430.0
+,,,,,,,59,14873.0
+,,,,,,,60,15179.0
+,,,,,,,61,15323.0
+,,,,,,,62,15515.0
+,,,,,,,63,15537.0
+,,,,,,,64,15481.0
+,,,,,,,65,15485.0
+,,,,,,,66,15440.0
+,,,,,,,67,15208.0
+,,,,,,,68,15028.0
+,,,,,,,69,15221.0
+,,,,,,,70,14913.0
+,,,,,,,71,13573.0
+,,,,,,,72,12159.0
+,,,,,,,73,14935.0
+,,,,,,,74,14062.0
+,,,,,,,75,13498.0
+,,,,,,,76,13146.0
+,,,,,,,77,13178.0
+,,,,,,,78,13712.0
+,,,,,,,79,15192.0
+,,,,,,,80,17114.0
+,,,,,,,81,18656.0
+,,,,,,,82,20020.0
+,,,,,,,83,21201.0
+,,,,,,,84,22009.0
+,,,,,,,85,22567.0
+,,,,,,,86,23070.0
+,,,,,,,87,23388.0
+,,,,,,,88,23629.0
+,,,,,,,89,23770.0
+,,,,,,,90,23575.0
+,,,,,,,91,23034.0
+,,,,,,,92,22325.0
+,,,,,,,93,21921.0
+,,,,,,,94,21122.0
+,,,,,,,95,19311.0
+,,,,,,,96,17514.0
+,,,,,,,97,11232.0
+,,,,,,,98,10825.0
+,,,,,,,99,10632.0
+,,,,,,,100,10622.0
+,,,,,,,101,10948.0
+,,,,,,,102,11984.0
+,,,,,,,103,13879.0
+,,,,,,,104,14890.0
+,,,,,,,105,15134.0
+,,,,,,,106,15241.0
+,,,,,,,107,15360.0
+,,,,,,,108,15407.0
+,,,,,,,109,15385.0
+,,,,,,,110,15372.0
+,,,,,,,111,15285.0
+,,,,,,,112,15482.0
+,,,,,,,113,16544.0
+,,,,,,,114,17247.0
+,,,,,,,115,17114.0
+,,,,,,,116,16657.0
+,,,,,,,117,15936.0
+,,,,,,,118,14783.0
+,,,,,,,119,13342.0
+,,,,,,,120,12052.0
diff --git a/test/test_multistage.jl b/test/test_multistage.jl
index 574920c699..c7f8d83631 100644
--- a/test/test_multistage.jl
+++ b/test/test_multistage.jl
@@ -98,4 +98,66 @@ end
 can_retire_test_result = @test test_can_retire(EP,inputs)
 write_testlog(test_path,"Testing that the resource with Can_Retire = 0 did not expand capacity",can_retire_test_result)
 
+
+function test_update_cumulative_min_ret!()
+    # Merge the genx_setup with the default settings
+    settings = GenX.default_settings()
+
+    for ParameterScale ∈ [0,1]
+        genx_setup["ParameterScale"] = ParameterScale
+        merge!(settings, genx_setup)
+
+        inputs_dict = Dict()
+        true_min_retirements = Dict()
+        
+        scale_factor = settings["ParameterScale"] == 1 ? GenX.ModelScalingFactor : 1.0
+        redirect_stdout(devnull) do
+            warnerror_logger = ConsoleLogger(stderr, Logging.Warn)
+            with_logger(warnerror_logger) do
+                for t in 1:3
+                    inpath_sub = joinpath(test_path, "cum_min_ret", string("inputs_p",t))
+                    
+                    true_min_retirements[t] = CSV.read(joinpath(inpath_sub, "resources", "Resource_multistage_data.csv"), DataFrame)
+                    rename!(true_min_retirements[t], lowercase.(names(true_min_retirements[t])))
+                    GenX.scale_multistage_data!(true_min_retirements[t], scale_factor)
+
+                    inputs_dict[t] = Dict()
+                    inputs_dict[t]["Z"] = 1
+                    GenX.load_demand_data!(settings, inpath_sub, inputs_dict[t])
+                    GenX.load_resources_data!(inputs_dict[t], settings, inpath_sub, joinpath(inpath_sub, settings["ResourcesFolder"]))
+                    compute_cumulative_min_retirements!(inputs_dict,t)
+                end
+            end
+        end
+
+        for t in 1:3
+            # Test that the cumulative min retirements are updated correctly
+            gen = inputs_dict[t]["RESOURCES"]
+            @test GenX.min_retired_cap_mw.(gen) == true_min_retirements[t].min_retired_cap_mw
+            @test GenX.min_retired_energy_cap_mw.(gen) == true_min_retirements[t].min_retired_energy_cap_mw
+            @test GenX.min_retired_charge_cap_mw.(gen) == true_min_retirements[t].min_retired_charge_cap_mw
+            @test GenX.min_retired_cap_inverter_mw.(gen) == true_min_retirements[t].min_retired_cap_inverter_mw
+            @test GenX.min_retired_cap_solar_mw.(gen) == true_min_retirements[t].min_retired_cap_solar_mw
+            @test GenX.min_retired_cap_wind_mw.(gen) == true_min_retirements[t].min_retired_cap_wind_mw
+            @test GenX.min_retired_cap_discharge_dc_mw.(gen) == true_min_retirements[t].min_retired_cap_discharge_dc_mw
+            @test GenX.min_retired_cap_charge_dc_mw.(gen) == true_min_retirements[t].min_retired_cap_charge_dc_mw
+            @test GenX.min_retired_cap_discharge_ac_mw.(gen) == true_min_retirements[t].min_retired_cap_discharge_ac_mw
+            @test GenX.min_retired_cap_charge_ac_mw.(gen) == true_min_retirements[t].min_retired_cap_charge_ac_mw
+
+            @test GenX.cum_min_retired_cap_mw.(gen) == sum(true_min_retirements[i].min_retired_cap_mw for i in 1:t)
+            @test GenX.cum_min_retired_energy_cap_mw.(gen) == sum(true_min_retirements[i].min_retired_energy_cap_mw for i in 1:t)
+            @test GenX.cum_min_retired_charge_cap_mw.(gen) == sum(true_min_retirements[i].min_retired_charge_cap_mw for i in 1:t)
+            @test GenX.cum_min_retired_cap_inverter_mw.(gen) == sum(true_min_retirements[i].min_retired_cap_inverter_mw for i in 1:t)
+            @test GenX.cum_min_retired_cap_solar_mw.(gen) == sum(true_min_retirements[i].min_retired_cap_solar_mw for i in 1:t)
+            @test GenX.cum_min_retired_cap_wind_mw.(gen) == sum(true_min_retirements[i].min_retired_cap_wind_mw for i in 1:t)
+            @test GenX.cum_min_retired_cap_discharge_dc_mw.(gen) == sum(true_min_retirements[i].min_retired_cap_discharge_dc_mw for i in 1:t)
+            @test GenX.cum_min_retired_cap_charge_dc_mw.(gen) == sum(true_min_retirements[i].min_retired_cap_charge_dc_mw for i in 1:t)
+            @test GenX.cum_min_retired_cap_discharge_ac_mw.(gen) == sum(true_min_retirements[i].min_retired_cap_discharge_ac_mw for i in 1:t)
+            @test GenX.cum_min_retired_cap_charge_ac_mw.(gen) == sum(true_min_retirements[i].min_retired_cap_charge_ac_mw for i in 1:t)
+        end
+    end
+end
+
+test_update_cumulative_min_ret!()
+
 end # module TestMultiStage