Carbon credits loose ends (#1045)

* Don't require participating in credits

* lint

* fix test objective function value

* fix wrong suscenario id bug

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/features.csv

@@ -0,0 +1,9 @@
+features
+transmission
+lf_reserves_up
+lf_reserves_down
+regulation_up
+regulation_down
+carbon_cap
+performance_standard
+carbon_credits

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/inputs/carbon_cap.tab

@@ -0,0 +1,2 @@
+carbon_cap_zone	period	carbon_cap_target
+Zone1	2020	300.0

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/inputs/carbon_cap_zones.tab

@@ -0,0 +1,2 @@
+carbon_cap_zone	allow_violation	violation_penalty_per_emission
+Zone1	0	0.0

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/inputs/carbon_credits_zones.tab

@@ -0,0 +1,2 @@
+carbon_credits_zone
+Carbon_Credits_Zone1

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/inputs/fuel_prices.tab

@@ -0,0 +1,9 @@
+fuel	period	month	fuel_price_per_mmbtu
+Coal	2020	1	4.0
+Coal	2020	2	4.0
+Gas	2020	1	5.0
+Gas	2020	2	5.0
+Negative_Carbon_Fuel	2020	1	6.0
+Negative_Carbon_Fuel	2020	2	6.0
+Uranium	2020	1	2.0
+Uranium	2020	2	2.0

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/inputs/fuels.tab

@@ -0,0 +1,5 @@
+fuel	co2_intensity_tons_per_mmbtu	fuel_group
+Coal	0.09552	Solid
+Gas	0.05306	Gas
+Negative_Carbon_Fuel	-0.1	Gas
+Uranium	0.0	Other

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/inputs/heat_rate_curves.tab

@@ -0,0 +1,10 @@
+project	period	load_point_fraction	average_heat_rate_mmbtu_per_mwh
+Coal	0	0.4	1250.0
+Coal	0	1.0	506.0
+Gas_CCGT	0	0.5	506.0
+Gas_CCGT	0	1.0	256.0
+Gas_CCGT_z2	0	0.5	506.0
+Gas_CCGT_z2	0	1.0	256.0
+Gas_CT	0	0.4	208.33333
+Gas_CT	0	1.0	88.13333
+Nuclear	0	1.0	1666.67

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/inputs/horizon_timepoints.tab

@@ -0,0 +1,3 @@
+horizon	balancing_type_horizon	timepoint
+202001	day	20200101
+202001	day	20200102

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/inputs/horizons.tab

@@ -0,0 +1,2 @@
+horizon	balancing_type_horizon	boundary
+202001	day	circular

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/inputs/lf_reserves_down_tmp_requirement.tab

@@ -0,0 +1,3 @@
+ba	timepoint	requirement
+Zone1	20200101	1.0
+Zone1	20200102	2.0

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/inputs/lf_reserves_up_tmp_requirement.tab

@@ -0,0 +1,3 @@
+ba	timepoint	requirement
+Zone1	20200101	1.0
+Zone1	20200102	2.0

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/inputs/load_following_down_balancing_areas.tab

@@ -0,0 +1,2 @@
+balancing_area	allow_violation	violation_penalty_per_mw	reserve_to_energy_adjustment
+Zone1	1	999999999.0	.

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/inputs/load_following_up_balancing_areas.tab

@@ -0,0 +1,2 @@
+balancing_area	allow_violation	violation_penalty_per_mw	reserve_to_energy_adjustment
+Zone1	1	999999999.0	.

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/inputs/load_mw.tab

@@ -0,0 +1,5 @@
+LOAD_ZONES	timepoint	load_mw
+Zone1	20200101	10.0
+Zone1	20200102	20.0
+Zone2	20200101	10.0
+Zone2	20200102	10.0

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/inputs/load_zones.tab

@@ -0,0 +1,3 @@
+load_zone	allow_overgeneration	overgeneration_penalty_per_mw	allow_unserved_energy	unserved_energy_penalty_per_mwh	unserved_energy_limit_mwh	max_unserved_load_penalty_per_mw	max_unserved_load_limit_mw	export_penalty_cost_per_mwh
+Zone1	1	99999999.0	1	99999999.0	.	0.0	.	0.0
+Zone2	1	99999999.0	1	99999999.0	.	0.0	.	0.0

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/inputs/new_build_generator_vintage_costs.tab

@@ -0,0 +1,2 @@
+project	vintage	operational_lifetime_yrs	fixed_cost_per_mw_yr	financial_lifetime_yrs	annualized_real_cost_per_mw_yr
+Solar	2020	30.0	0.0	30.0	100.0

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/inputs/new_build_potentials.tab

@@ -0,0 +1,2 @@
+project	period	min_new_build_power	max_new_build_power	min_capacity_power	max_capacity_power	min_new_build_energy	max_new_build_energy	min_capacity_energy	max_capacity_energy
+Solar	2020	.	.	0.0	2.0	.	.	.	.

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/inputs/performance_standard.tab

@@ -0,0 +1,3 @@
+performance_standard_zone	period	performance_standard_tco2_per_mwh
+PS_Zone1	2020	0.1
+PS_Zone2	2020	0.1

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/inputs/performance_standard_zones.tab

@@ -0,0 +1,3 @@
+performance_standard_zone	allow_violation	violation_penalty_per_emission
+PS_Zone1	0	0.0
+PS_Zone2	0	0.0

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/inputs/performance_standard_zones_carbon_credits_zone_mapping.tab

@@ -0,0 +1,2 @@
+performance_standard_zone	carbon_credits_zone
+PS_Zone1	Carbon_Credits_Zone1

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/inputs/periods.tab

@@ -0,0 +1,2 @@
+period	discount_factor	period_start_year	period_end_year	hours_in_period_timepoints
+2020	1.0	2020.0	2021.0	8760.0

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/inputs/project_carbon_cap_zones.tab

@@ -0,0 +1,3 @@
+project	carbon_cap_zone
+Gas_CCGT	Zone1
+Gas_CT	Zone1

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/inputs/project_carbon_credits.tab

@@ -0,0 +1,2 @@
+project	period	intensity_threshold_emissions_toCO2_per_MWh	absolute_threshold_emissions_toCO2
+Coal	2020	.	2000000.0

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/inputs/project_fuels.tab

@@ -0,0 +1,7 @@
+project	fuel	min_fraction_in_fuel_blend	max_fraction_in_fuel_blend
+Coal	Coal	.	.
+Gas_CCGT	Gas	0.0	1.0
+Gas_CCGT	Negative_Carbon_Fuel	0.0	1.0
+Gas_CCGT_z2	Gas	.	.
+Gas_CT	Gas	.	.
+Nuclear	Uranium	.	.

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/inputs/projects.tab

@@ -0,0 +1,8 @@
+project	capacity_type	availability_type	operational_type	balancing_type_project	technology	load_zone	variable_om_cost_per_mwh	min_stable_level_fraction	unit_size_mw	startup_cost_per_mw	shutdown_cost_per_mw	startup_fuel_mmbtu_per_mw	startup_plus_ramp_up_rate	shutdown_plus_ramp_down_rate	ramp_up_when_on_rate	ramp_down_when_on_rate	ramp_up_violation_penalty	ramp_down_violation_penalty	min_up_time_hours	min_up_time_violation_penalty	min_down_time_hours	min_down_time_violation_penalty	allow_startup_shutdown_power	storage_efficiency	charging_efficiency	discharging_efficiency	charging_capacity_multiplier	discharging_capacity_multiplier	minimum_duration_hours	maximum_duration_hours	aux_consumption_frac_capacity	aux_consumption_frac_power	last_commitment_stage	curtailment_cost_per_pwh	powerunithour_per_fuelunit	soc_penalty_cost_per_energyunit	soc_last_tmp_penalty_cost_per_energyunit	partial_availability_threshold	nonfuel_carbon_emissions_per_mwh	lf_reserves_up_ba	lf_reserves_up_derate	lf_reserves_down_ba	lf_reserves_down_derate	regulation_up_ba	regulation_up_derate	regulation_down_ba	regulation_down_derate	lf_reserves_up_ramp_rate	lf_reserves_down_ramp_rate	regulation_up_ramp_rate	regulation_down_ramp_rate	performance_standard_zone	carbon_credits_zone
+Coal	gen_spec	exogenous	gen_commit_cap	day	Coal	Zone1	1.0	0.4	6.0	1.0	0.0	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	2	.	.	.	.	.	.	.	.	.	.	Zone1	.	Zone1	.	.	.	.	.	.	Carbon_Credits_Zone1
+Gas_CCGT	gen_spec	exogenous	gen_commit_cap	day	Gas	Zone1	2.0	0.4	6.0	1.0	2.0	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	1	.	.	.	.	.	.	Zone1	.	Zone1	.	Zone1	.	Zone1	.	.	.	.	.	PS_Zone1	.
+Gas_CCGT_z2	gen_spec	exogenous	gen_commit_cap	day	Gas	Zone2	2.0	0.4	6.0	1.0	2.0	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	1	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.
+Gas_CT	gen_spec	exogenous	gen_commit_cap	day	Gas	Zone1	2.0	0.4	6.0	0.0	1.0	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	3	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	PS_Zone2	.
+Nuclear	gen_spec	exogenous	gen_must_run	day	Nuclear	Zone1	1.0	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.
+Solar	gen_new_lin	exogenous	gen_var	day	Solar	Zone1	0.0	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.
+Wind	gen_spec	exogenous	gen_var	day	Wind	Zone1	0.0	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/inputs/regulation_down_balancing_areas.tab

@@ -0,0 +1,2 @@
+balancing_area	allow_violation	violation_penalty_per_mw	reserve_to_energy_adjustment
+Zone1	1	999999999.0	.

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/inputs/regulation_down_tmp_requirement.tab

@@ -0,0 +1,3 @@
+ba	timepoint	requirement
+Zone1	20200101	1.0
+Zone1	20200102	2.0

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/inputs/regulation_up_balancing_areas.tab

@@ -0,0 +1,2 @@
+balancing_area	allow_violation	violation_penalty_per_mw	reserve_to_energy_adjustment
+Zone1	1	999999999.0	.

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/inputs/regulation_up_tmp_requirement.tab

@@ -0,0 +1,3 @@
+ba	timepoint	requirement
+Zone1	20200101	1.0
+Zone1	20200102	2.0

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/inputs/spec_capacity_period_params.tab

@@ -0,0 +1,7 @@
+project	period	specified_capacity_mw	hyb_gen_specified_capacity_mw	hyb_stor_specified_capacity_mw	specified_capacity_mwh	fuel_production_capacity_fuelunitperhour	fuel_release_capacity_fuelunitperhour	fuel_storage_capacity_fuelunit	fixed_cost_per_mw_yr	hyb_gen_fixed_cost_per_mw_yr	hyb_stor_fixed_cost_per_mw_yr	fixed_cost_per_mwh_yr	fuel_production_capacity_fixed_cost_per_fuelunitperhour_yr	fuel_release_capacity_fixed_cost_per_fuelunitperhour_yr	fuel_storage_capacity_fixed_cost_per_fuelunit_yr
+Coal	2020	6.0							0.0						
+Gas_CCGT	2020	6.0							0.0						
+Gas_CCGT_z2	2020	12.0							0.0						
+Gas_CT	2020	6.0							0.0						
+Nuclear	2020	6.0							0.0						
+Wind	2020	2.0							0.0						

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/inputs/specified_transmission_line_capacities.tab

@@ -0,0 +1,2 @@
+transmission_line	period	specified_tx_min_mw	specified_tx_max_mw	fixed_cost_per_mw_yr
+Tx1	2020	-10.0	10.0	.

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/inputs/timepoints.tab

@@ -0,0 +1,3 @@
+timepoint	period	timepoint_weight	number_of_hours_in_timepoint	previous_stage_timepoint_map	month
+20200101	2020	4380.0	1	.	1
+20200102	2020	4380.0	1	.	1

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/inputs/transmission_lines.tab

@@ -0,0 +1,2 @@
+transmission_line	tx_capacity_type	tx_availability_type	tx_operational_type	load_zone_from	load_zone_to	tx_simple_loss_factor	reactance_ohms
+Tx1	tx_spec	exogenous	tx_simple	Zone1	Zone2	.	.

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/inputs/variable_generator_profiles.tab

@@ -0,0 +1,5 @@
+project	timepoint	cap_factor
+Solar	20200101	0.05
+Solar	20200102	1.0
+Wind	20200101	0.9
+Wind	20200102	0.5

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/results/objective_function_value.txt

@@ -0,0 +1 @@
+-3592014778836.29

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/results/solver_status.txt

@@ -0,0 +1 @@
+ok

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/results/summary_results.txt

@@ -0,0 +1,20 @@
+##### SUMMARY RESULTS FOR SCENARIO *test_performance_standard_carbon_credits_w_cap_no_credits_mapping* #####
+
+### CAPACITY RESULTS ###
+
+--> New Generation Capacity <--
+                             New Capacity (MW)
+load_zone technology period                   
+Zone1     Solar      2020                 2.00
+
+### OPERATIONAL RESULTS ###
+
+--> Energy Production <--
+                             Annual Energy (MWh)  % Total Power
+load_zone period technology                                    
+Zone1     2020   Coal                  18,688.00          14.05
+                 Gas                   40,296.00          30.30
+                 Nuclear               52,560.00          39.52
+                 Solar                  9,198.00           6.92
+                 Wind                  12,264.00           9.22
+Zone2     2020   Gas                   85,118.00         100.00

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/results/termination_condition.txt

@@ -0,0 +1 @@
+optimal

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/scenario_description.csv

@@ -0,0 +1,126 @@
+scenario_id,105
+scenario_name,test_performance_standard_carbon_credits_w_cap_no_credits_mapping
+of_transmission,1
+of_transmission_hurdle_rates,
+of_simultaneous_flow_limits,
+of_lf_reserves_up,1
+of_lf_reserves_down,1
+of_regulation_up,1
+of_regulation_down,1
+of_frequency_response,
+of_spinning_reserves,
+of_period_energy_target,
+of_horizon_energy_target,
+of_period_transmission_target,
+of_carbon_cap,1
+of_track_carbon_imports,
+of_carbon_tax,
+of_performance_standard,1
+of_carbon_credits,1
+of_fuel_burn_limit,
+of_subsidies,
+of_prm,
+of_capacity_transfers,
+of_deliverability,
+of_elcc_surface,
+of_local_capacity,
+of_markets,
+of_tuning,
+temporal_scenario_id,1
+load_zone_scenario_id,2
+lf_reserves_up_ba_scenario_id,1
+lf_reserves_down_ba_scenario_id,1
+regulation_up_ba_scenario_id,1
+regulation_down_ba_scenario_id,1
+frequency_response_ba_scenario_id,NULL
+spinning_reserves_ba_scenario_id,NULL
+energy_target_zone_scenario_id,NULL
+transmission_target_zone_scenario_id,NULL
+carbon_cap_zone_scenario_id,1
+carbon_tax_zone_scenario_id,NULL
+performance_standard_zone_scenario_id,1
+carbon_credits_zone_scenario_id,1
+carbon_cap_zones_carbon_credits_zones_scenario_id,NULL
+performance_standard_zones_carbon_credits_zones_scenario_id,1
+carbon_tax_zones_carbon_credits_zones_scenario_id,NULL
+carbon_credits_price_scenario_id,NULL
+fuel_burn_limit_ba_scenario_id,NULL
+prm_zone_scenario_id,NULL
+local_capacity_zone_scenario_id,NULL
+market_scenario_id,NULL
+project_portfolio_scenario_id,15
+project_operational_chars_scenario_id,16
+project_availability_scenario_id,1
+fuel_scenario_id,1
+project_load_zone_scenario_id,1
+project_lf_reserves_up_ba_scenario_id,5
+project_lf_reserves_down_ba_scenario_id,5
+project_regulation_up_ba_scenario_id,5
+project_regulation_down_ba_scenario_id,5
+project_frequency_response_ba_scenario_id,NULL
+project_spinning_reserves_ba_scenario_id,NULL
+project_energy_target_zone_scenario_id,NULL
+tx_line_transmission_target_zone_scenario_id,NULL
+project_carbon_cap_zone_scenario_id,2
+project_carbon_tax_zone_scenario_id,NULL
+project_carbon_tax_allowance_scenario_id,NULL
+project_performance_standard_zone_scenario_id,1
+project_carbon_credits_zone_scenario_id,1
+project_carbon_credits_scenario_id,1
+project_fuel_burn_limit_ba_scenario_id,NULL
+project_prm_zone_scenario_id,NULL
+prm_capacity_transfer_scenario_id,NULL
+prm_capacity_transfer_params_scenario_id,NULL
+transmission_prm_zone_scenario_id,NULL
+project_elcc_chars_scenario_id,NULL
+prm_deliverability_cost_scenario_id,NULL
+prm_deliverability_existing_scenario_id,NULL
+prm_deliverability_potential_scenario_id,NULL
+project_prm_deliverability_multipliers_scenario_id,NULL
+project_local_capacity_zone_scenario_id,NULL
+project_local_capacity_chars_scenario_id,NULL
+load_zone_market_scenario_id,NULL
+project_specified_capacity_scenario_id,3
+project_specified_fixed_cost_scenario_id,1
+fuel_price_scenario_id,1
+project_new_cost_scenario_id,1
+project_new_potential_scenario_id,2
+project_new_binary_build_size_scenario_id,NULL
+project_capacity_group_requirement_scenario_id,NULL
+project_relative_capacity_requirement_scenario_id,NULL
+project_capacity_group_scenario_id,NULL
+transmission_portfolio_scenario_id,1
+transmission_load_zone_scenario_id,1
+transmission_specified_capacity_scenario_id,1
+transmission_new_cost_scenario_id,NULL
+transmission_availability_scenario_id,1
+transmission_operational_chars_scenario_id,1
+transmission_hurdle_rate_scenario_id,NULL
+transmission_new_potential_scenario_id,NULL
+transmission_flow_scenario_id,NULL
+transmission_capacity_group_requirement_scenario_id,NULL
+transmission_capacity_group_scenario_id,NULL
+transmission_carbon_cap_zone_scenario_id,NULL
+transmission_simultaneous_flow_limit_scenario_id,NULL
+transmission_simultaneous_flow_limit_line_group_scenario_id,NULL
+load_scenario_id,1
+lf_reserves_up_scenario_id,1
+lf_reserves_down_scenario_id,1
+regulation_up_scenario_id,1
+regulation_down_scenario_id,1
+frequency_response_scenario_id,NULL
+spinning_reserves_scenario_id,NULL
+period_energy_target_scenario_id,NULL
+horizon_energy_target_scenario_id,NULL
+period_transmission_target_scenario_id,NULL
+carbon_cap_target_scenario_id,1
+carbon_tax_scenario_id,NULL
+performance_standard_scenario_id,1
+fuel_burn_limit_scenario_id,NULL
+subsidy_scenario_id,NULL
+prm_requirement_scenario_id,NULL
+local_capacity_requirement_scenario_id,NULL
+elcc_surface_scenario_id,NULL
+market_price_scenario_id,NULL
+market_volume_scenario_id,NULL
+tuning_scenario_id,NULL

examples/test_performance_standard_carbon_credits_w_cap_no_credits_mapping/units.csv

@@ -0,0 +1,15 @@
+metric,unit
+power,MW
+energy,MWh
+fuel_energy,MMBtu
+cost,USD
+carbon_emissions,tonnes CO2
+time_for_cost,yr.
+heat_rate,MMBtu/MWh
+fuel_emission_intensity,tonnes CO2/MMBtu
+fuel_price,USD/MMBtu
+variable_om_cost,USD/MWh
+fixed_om_cost,USD/MW-yr.
+fixed_om_cost_energy,USD/MW-yr.
+capacity_cost,USD/MW-yr.
+energy_capacity_cost,USD/MWh-yr.

gridpath/system/policy/carbon_cap/purchase_credits.py

@@ -85,7 +85,7 @@ def get_inputs_from_database(scenario_id, subscenarios, subproblem, stage, conn)
         AND carbon_credits_zone in (
             SELECT carbon_credits_zone
             FROM inputs_geography_carbon_credits_zones
-            WHERE carbon_credits_zone_scenario_id = {subscenarios.CARBON_CAP_ZONE_SCENARIO_ID}
+            WHERE carbon_credits_zone_scenario_id = {subscenarios.CARBON_CREDITS_ZONE_SCENARIO_ID}
         )
         ;
         """
@@ -110,7 +110,8 @@ def write_model_inputs(
         "inputs",
         "carbon_cap_zones_carbon_credits_zone_mapping.tab",
     )
-    df.to_csv(fpath, index=False, sep="\t")
+    if not df.empty:
+        df.to_csv(fpath, index=False, sep="\t")
 
 
 def load_model_data(m, d, data_portal, scenario_directory, subproblem, stage):
@@ -124,17 +125,20 @@ def load_model_data(m, d, data_portal, scenario_directory, subproblem, stage):
     :param stage:
     :return:
     """
-    data_portal.load(
-        filename=os.path.join(
-            scenario_directory,
-            str(subproblem),
-            str(stage),
-            "inputs",
-            "carbon_cap_zones_carbon_credits_zone_mapping.tab",
-        ),
-        set=m.CARBON_CAP_ZONES_CARBON_CREDITS_ZONES,
+    map_file = os.path.join(
+        scenario_directory,
+        str(subproblem),
+        str(stage),
+        "inputs",
+        "carbon_cap_zones_carbon_credits_zone_mapping.tab",
     )
 
+    if os.path.exists(map_file):
+        data_portal.load(
+            filename=map_file,
+            set=m.CARBON_CAP_ZONES_CARBON_CREDITS_ZONES,
+        )
+
 
 def export_results(scenario_directory, subproblem, stage, m, d):
     """