Functions for Writing the Different Results/Outputs to Separate Files

write_annual(fullpath::AbstractString, dfOut::DataFrame)

Internal function for writing annual outputs.

writefulltimeseriesreconstruction(path::AbstractString, setup::Dict, DF::DataFrame, name::String) Create a DataFrame with all 8,760 hours of the year from the reduced output.

This function calls full_time_series_reconstruction()`, which uses Period_map.csv to create a new DataFrame with 8,760 time steps, as well as other pre-existing rows such as "Zone". For each 52 weeks of the year, the corresponding representative week is taken from the input DataFrame and copied into the new DataFrame. Representative periods that represent more than one week will appear multiple times in the output.

Note: Currently, TDR only gives the representative periods in Period_map for 52 weeks, when a (non-leap) year is 52 weeks + 24 hours. This function takes the last 24 hours of the time series and copies them to get up to all 8,760 hours in a year.

This function is called when output files with time series data (e.g. power.csv, emissions.csv) are created, if the setup key "OutputFullTimeSeries" is set to "1".

Arguments

• path (AbstractString): Path input to the results folder
• setup (Dict): Case setup
• DF (DataFrame): DataFrame to be reconstructed
• name (String): Name desired for the .csv file

write_fulltimeseries(fullpath::AbstractString, dataOut::Matrix{Float64}, dfOut::DataFrame)

Internal function for writing full time series outputs. This function wraps the instructions for creating the full time series output files.

write_outputs(EP::Model, path::AbstractString, setup::Dict, inputs::Dict)

Function for the entry-point for writing the different output files. From here, onward several other functions are called, each for writing specific output files, like costs, capacities, etc.

write_settings_file(path, setup)

Internal function for writing settings files

write_system_env_summary(path::AbstractString)

Write a summary of the current testing environment to a YAML file. The summary includes information like the CPU name and architecture, number of CPU threads, JIT status, operating system kernel, machine name, Julia standard library path, Julia version and GenX version.

Arguments

• path::AbstractString: The directory path where the YAML file will be written.

Output

Writes a file named env_summary.yml in the specified directory.

choose_output_dir(pathinit)

Avoid overwriting (potentially important) existing results by appending to the directory name\n Checks if the suggested output directory already exists. While yes, it appends _1, _2, etc till an unused name is found

df = dftranspose(df::DataFrame, withhead::Bool)

Returns a transpose of a Dataframe.

write_status(path::AbstractString, inputs::Dict, EP::Model)

Function for writing the final solve status of the optimization problem solved.

write_status_benders(path::AbstractString, inputs::Dict, setup::Dict, benders_results::NamedTuple)

Function for writing the final status of a Benders decomposition run.

Unlike the monolithic case, there is no single JuMP model whose termination_status describes the run: the planning problem is repeatedly re-solved and only the algorithm's bounds describe how the decomposition terminated. The status is therefore derived from the Benders bounds and the stopping criteria in setup:

• MOI.OPTIMAL if the final relative gap (UB - LB) / |LB| is within setup[:ConvTol]
• MOI.TIME_LIMIT if the elapsed CPU time reached setup[:MaxCpuTime]
• MOI.ITERATION_LIMIT if the iteration count reached setup[:MaxIter]
• MOI.OTHER_LIMIT otherwise (terminated for some other reason without converging)

Objval is the best upper bound (the cost of the incumbent planning solution plus the operational cost it implies), and Objbound is the final lower bound.

write_co2_cap(path::AbstractString, inputs::Dict, setup::Dict, EP::Model)

Function for reporting carbon price associated with carbon cap constraints.

write_costs(path::AbstractString, inputs::Dict, setup::Dict, EP::Model)

Function for writing the costs pertaining to the objective function (fixed, variable O&M etc.).

write_fuel_consumption(path::AbstractString, inputs::Dict, setup::Dict, EP::Model).

Write fuel consumption of each power plant.

write_emissions(path::AbstractString, inputs::Dict, setup::Dict, EP::Model)

Function for reporting time-dependent CO$_2$ emissions by zone.

write_capacity(path::AbstractString, inputs::Dict, setup::Dict, EP::Model))

Function for writing the diferent capacities for the different generation technologies (starting capacities or, existing capacities, retired capacities, and new-built capacities).

capacity_reserve_margin_price(EP::Model,
                              inputs::Dict,
                              setup::Dict,
                              capres_zone::Int)::Vector{Float64}

Marginal price for capacity constraint. This is equal to the dual variable of the capacity constraint. Returns a vector, with units of USD/MW

write_capacity_value(path::AbstractString,
                     inputs::Dict,
                     setup::Dict,
                     EP::Model)

This is the value of the derated capacities of different types of resources multiplied by the power generated by each of them

Arguments

• path::AbstractString: Path to the directory where the file will be written.
• inputs::Dict: Dictionary of input data.
• setup::Dict: Dictionary of setup data.
• EP::Model: EnergyModel object.

Results

• A CSV file named "CapacityValue.csv" is written to the directory specified by path.

write_capacityfactor(path::AbstractString, inputs::Dict, setup::Dict, EP::Model)

Function for writing the capacity factor of different resources. For co-located VRE-storage resources, this value is calculated if the site has either or both a solar PV or wind resource.

write_fusion_net_capacity_factor(path::AbstractString, inputs::Dict, setup::Dict, EP::Model)

The "net capacity factor" for fusion plants is the ratio of the annual net output to the net time-averaged capacity. The net output is the gross output less parasitic power. The net time-averaged capacity accounts for parasitic power and average capacity due to the need to pulse the plant, if any.

write_charge(path::AbstractString, inputs::Dict, setup::Dict, EP::Model)

Function for writing the charging energy values of the different storage technologies.

write_nse(path::AbstractString, inputs::Dict, setup::Dict, EP::Model)

Function for reporting non-served energy for every model zone, time step and cost-segment.

write_storage(path::AbstractString, inputs::Dict,setup::Dict, EP::Model)

Function for writing the capacities of different storage technologies, including hydro reservoir, flexible storage tech etc.

write_storagedual(path::AbstractString, inputs::Dict, setup::Dict, EP::Model)

Function for reporting dual of storage level (state of charge) balance of each resource in each time step.

write_power(path::AbstractString, inputs::Dict, setup::Dict, EP::Model)

Function for writing the different values of power generated by the different technologies in operation.

write_curtailment(path::AbstractString, inputs::Dict, setup::Dict, EP::Model)

Function for writing the curtailment values of the different variable renewable resources (both standalone and co-located).

locational_marginal_price(EP::Model, inputs::Dict, setup::Dict)

Marginal electricity price for each model zone and time step. This is equal to the dual variable of the power balance constraint. When solving a linear program (i.e. linearized unit commitment or economic dispatch) this output is always available; when solving a mixed integer linear program, this can be calculated only if WriteShadowPrices is activated.

Returns a matrix of size (T, Z).
Values have units of USD/MWh

write_price(path::AbstractString, inputs::Dict, setup::Dict, EP::Model)

Function for reporting marginal electricity price for each model zone and time step. Marginal electricity price is equal to the dual variable of the power balance constraint. If GenX is configured as a mixed integer linear program, then this output is only generated if WriteShadowPrices flag is activated. If configured as a linear program (i.e. linearized unit commitment or economic dispatch) then output automatically available.

write_reliability(path::AbstractString, inputs::Dict, setup::Dict, EP::Model)

Function for reporting dual variable of maximum non-served energy constraint (shadow price of reliability constraint) for each model zone and time step.

write_energy_revenue(path::AbstractString, inputs::Dict, setup::Dict, EP::Model)

Function for writing energy revenue from the different generation technologies.

write_subsidy_revenue(path::AbstractString, inputs::Dict, setup::Dict, EP::Model)

Function for reporting subsidy revenue earned if a generator specified Min_Cap is provided in the input file, or if a generator is subject to a Minimum Capacity Requirement constraint. The unit is $.

write_operating_reserve_regulation_revenue(path::AbstractString, inputs::Dict, setup::Dict, EP::Model)

Function for reporting the operating reserve and regulation revenue earned by generators listed in the input file. GenX will print this file only when operating reserve and regulation are modeled and the shadow price can be obtained from the solver. The revenues are calculated as the operating reserve and regulation contributions in each time step multiplied by the corresponding shadow price, and then the sum is taken over all modeled time steps. The last column is the total revenue received from all operating reserve and regulation constraints. As a reminder, GenX models the operating reserve and regulation at the time-dependent level, and each constraint either stands for an overall market or a locality constraint.

write_reserve_margin_revenue(path::AbstractString, inputs::Dict, setup::Dict, EP::Model)

Function for reporting the capacity revenue earned by each generator listed in the input file. GenX will print this file only when capacity reserve margin is modeled and the shadow price can be obtained form the solver. Each row corresponds to a generator, and each column starting from the 6th to the second last is the total revenue from each capacity reserve margin constraint. The revenue is calculated as the capacity contribution of each time steps multiplied by the shadow price, and then the sum is taken over all modeled time steps. The last column is the total revenue received from all capacity reserve margin constraints. As a reminder, GenX models the capacity reserve margin (aka capacity market) at the time-dependent level, and each constraint either stands for an overall market or a locality constraint.

write_hourly_matching_prices(path::AbstractString, inputs::Dict, setup::Dict, EP::Model)

Function for reporting the shadow price of each hourly matching constraint in each timestep. GenX will print this file only when an hourly matching requirement is modeled and the shadow price can be obtained form the solver. Each column corresponds to an hourly matching constraint, and each row corresponds to a timestep.

write_hourly_matching_revenue(path::AbstractString, inputs::Dict, setup::Dict, EP::Model)

Function for reporting the hourly matching revenue earned by each generator listed in the input file. GenX will print this file only when an hourly matching requirement is modeled and the shadow price can be obtained form the solver. Each row corresponds to a generator, and each column starting from the is the total revenue from each hourly matching constraint. The revenue is calculated as the net generation in each time step multiplied by the shadow price, and then the sum is taken over all modeled time steps. The last column is the total revenue received from all hourly matching constraints.

write_hourly_matching_slack(path::AbstractString, inputs::Dict, setup::Dict, EP::Model)

Function for reporting the value of the slack variable for each hourly matching constraint in each timestep and the total objective function cost. GenX will print this file only when an hourly matching requirement is modeled, an optional slack variable is created, and the shadow price can be obtained form the solver.

write_esr_revenue(path::AbstractString, inputs::Dict, setup::Dict, dfPower::DataFrame, dfESR::DataFrame, EP::Model)

Function for reporting the renewable/clean credit revenue earned by each generator listed in the input file. GenX will print this file only when RPS/CES is modeled and the shadow price can be obtained form the solver. Each row corresponds to a generator, and each column starting from the 6th to the second last is the total revenue earned from each RPS constraint. The revenue is calculated as the total annual generation (if elgible for the corresponding constraint) multiplied by the RPS/CES price. The last column is the total revenue received from all constraint. The unit is $.

write_net_revenue(path::AbstractString, inputs::Dict, setup::Dict, EP::Model, dfCap::DataFrame, dfESRRev::DataFrame, dfResRevenue::DataFrame, dfChargingcost::DataFrame, dfPower::DataFrame, dfEnergyRevenue::DataFrame, dfSubRevenue::DataFrame, dfRegSubRevenue::DataFrame, dfVreStor::DataFrame, dfOpRegRevenue::DataFrame, dfOpRsvRevenue::DataFrame)

Function for writing net revenue of different generation technologies.

write_vre_stor(path::AbstractString, inputs::Dict, setup::Dict, EP::Model)

Function for writing the vre-storage specific files.

write_vre_stor_capacity(path::AbstractString, inputs::Dict, setup::Dict, EP::Model)

Function for writing the vre-storage capacities.

write_vre_stor_charge(path::AbstractString, inputs::Dict, setup::Dict, EP::Model)

Function for writing the vre-storage charging decision variables/expressions.

write_vre_stor_discharge(path::AbstractString, inputs::Dict, setup::Dict, EP::Model)

Function for writing the vre-storage discharging decision variables/expressions.

write_multi_stage_outputs(stats_d::Dict, 
    outpath::String, 
    settings_d::Dict, 
    inputs_dict::Dict)

This function calls various methods which write multi-stage modeling outputs as .csv files.

Arguments:

• stats_d: Dictionary which contains the run time, upper bound, and lower bound of each DDP iteration.
• outpath: String which represents the path to the Results directory.
• settings_d: Dictionary containing settings configured in the GenX settings genx_settings.yml file as well as the multi-stage settings file multi_stage_settings.yml.
• inputs_dict: Dictionary containing the input data for the multi-stage model.

write_multi_stage_costs(outpath::String, settings_d::Dict)

This function writes the file costs_multi_stage.csv to the Results directory. This file contains variable, fixed, startup, network expansion, unmet reserve, and non-served energy costs discounted to year zero.

inputs:

• outpath – String which represents the path to the Results directory.
• settings_d - Dictionary containing settings dictionary configured in the multi-stage settings file multi_stage_settings.yml.

writemultistagestats(outpath::String, statsd::Dict)

This function writes the file stats_multi_stage.csv. to the Results directory. This file contains the runtime, upper bound, lower bound, and relative optimality gap for each iteration of the DDP algorithm.

inputs:

• outpath – String which represents the path to the Results directory.
• stats_d – Dictionary which contains the run time, upper bound, and lower bound of each DDP iteration.

write_multi_stage_settings(outpath::AbstractString, settings_d::Dict)

Function for writing the multi-stage settings file to the output path for future reference.

write_multi_stage_network_expansion(outpath::String, settings_d::Dict)

This function writes the file network_expansion_multi_stage.csv to the Results directory. This file contains new transmission capacities for each modeled transmission line for the first and all subsequent model stages.

inputs:

• outpath – String which represents the path to the Results directory.
• settings_d - Dictionary containing settings dictionary configured in the multi-stage settings file multi_stage_settings.yml.

write_multi_stage_capacities_discharge(outpath::String, settings_d::Dict)

This function writes the file capacities_multi_stage.csv to the Results directory. This file contains starting resource capacities from the first model stage and end resource capacities for the first and all subsequent model stages.

inputs:

• outpath – String which represents the path to the Results directory.
• settings_d - Dictionary containing settings dictionary configured in the multi-stage settings file multi_stage_settings.yml.

write_multi_stage_capacities_charge(outpath::String, settings_d::Dict)

This function writes the file capacities_charge_multi_stage.csv to the Results directory. This file contains starting resource charge capacities from the first model stage and end resource charge capacities for the first and all subsequent model stages.

inputs:

• outpath – String which represents the path to the Results directory.
• settings_d - Dictionary containing settings dictionary configured in the multi-stage settings file multi_stage_settings.yml.

write_multi_stage_capacities_energy(outpath::String, settings_d::Dict)

This function writes the file capacities_energy_multi_stage.csv to the Results directory. This file contains starting resource energy capacities from the first model stage and end resource energy capacities for the first and all subsequent model stages.

inputs:

• outpath – String which represents the path to the Results directory.
• settings_d - Dictionary containing settings dictionary configured in the multi-stage settings file multi_stage_settings.yml.

create_multi_stage_stats_file(outpath::String)

Create an empty CSV file in the specified output directory with the filename stats_multi_stage.csv. The file contains the columns defined in _get_multi_stage_stats_header(). The function first generates the filename and header using _get_multi_stage_stats_filename() and _get_multi_stage_stats_header() respectively. It then creates a DataFrame with column names as headers and writes it into a CSV file in the specified output directory.

Arguments

• outpath::String: The output directory where the statistics file will be written.

Returns

• Nothing. A CSV file is written to the outpath.

update_multi_stage_stats_file(outpath::String, ic::Int64, upper_bound::Float64, lower_bound::Float64, iteration_time::Float64; new_row::Bool=false)

Update a multi-stage statistics file.

Arguments

• outpath::String: The output directory where the statistics file will be written.
• ic::Int64: The iteration count.
• upper_bound::Float64: The upper bound value.
• lower_bound::Float64: The lower bound value.
• iteration_time::Float64: The iteration time value.
• new_row::Bool=false: Optional argument to determine whether to append a new row (if true) or update the current row (if false).

The function first checks if the file exists. If it does not, it creates a new one. Then, it reads the statistics from the existing file into a DataFrame. It calculates the relative gap based on the upper and lower bounds, and either appends a new row or updates the current row based on the new_row argument. Finally, it writes the updated DataFrame back to the file.

Returns

• Nothing. A CSV file is updated or created at the outpath.

write_angles(path::AbstractString, inputs::Dict, setup::Dict, EP::Model)

Function for reporting the bus angles for each model zone and time step if the DC_OPF flag is activated

write_settings_file(path, setup)

Internal function for writing settings files

write_allam_capacity(path::AbstractString, inputs::Dict, setup::Dict, EP::Model)

This function writes the different capacities for the Allam Cycle LOX technologies (starting capacities or, existing capacities, retired capacities, and new-built capacities) to the capacity_allam_cycle_lox.csv file.

write_allam_output(path::AbstractString, inputs::Dict, setup::Dict, EP::Model)

This function writes the power output from each component of an Allam Cycle LOX resource to the output_allam_cycle_lox.csv file.

_as_time_matrix(data, nrows, ncols, name)

Coerce data into a (nrows × ncols) Matrix{Float64}, transposing if needed.

Accepts vectors (reshaped to a single row or column depending on which dimension matches), matrices in either orientation, or any Array-convertible type. Raises DimensionMismatch if the data cannot be unambiguously mapped to the target shape. name is used only in error messages.

_slice_time_series(data, time_columns)

Slice data along its time axis using time_columns.

For a 1-D array returns data[time_columns]; for a 2-D array returns data[:, time_columns]. Converts to a plain Array first to handle JuMP DenseAxisArray inputs.

_subproblem_time_columns(inputs, subproblem, local_T)

Return the global time-step range corresponding to a single subproblem.

Uses subproblem[:subproblem_index] and inputs["hours_per_subperiod"] to map local time indices 1:local_T to their position in the full annual time series. Returns 1:local_T when either field is absent (single-period or non-decomposed case).

_subproblem_zonal_operational_costs(EP, inputs, setup)

Compute per-zone operational costs from a solved subproblem EP, as three Z-length vectors (cvar, cnse, cstart) in raw model units (scaling applied by the cost writer).

Mirrors the per-zone loop of the monolithic write_costs:

• cvar — generation/discharge (eCVar_out), storage charging (eCVar_in), flexible demand (eCVarFlex_in), co-located VRE+storage, and Allam-cycle (eCVar_Allam) VOM.
• cnse — non-served energy (eCNSE[:, :, z]).
• cstart — non-fuel startup O&M (eCStart, eCStart_Allam). Startup fuel is excluded here and added by the cost writer from the per-plant fuel_cost_start.

Each per-zone sum is over the subproblem's time slice; summing across subproblems yields the annual per-zone value. Component sets absent from the model contribute zero.

_vre_stor_zonal_var_om(EP, inputs, z)

Zone-z variable O&M for co-located VRE+storage resources in a subproblem EP.

Mirrors the VRE-storage block of the monolithic write_costs per-zone loop: solar/wind output VOM (eCVarOutSolar/eCVarOutWind) plus asymmetric DC/AC charge/discharge VOM. Returns raw model units; empty when the model has no VRE-storage resources.

collect_benders_output_bundle(inputs, setup, subproblems)

Collect all operational output arrays from solved subproblems into a single NamedTuple.

Dispatches to collect_distributed_output_bundle when subproblems is a DArray (multi-worker run) or get_local_output_bundle otherwise.

collect_distributed_output_bundle(inputs, setup, subproblems)

Collect and concatenate output bundles from all workers into a single NamedTuple.

Fetches get_local_output_bundle from each worker in parallel, then reduces each time-series field with hcat (concatenating representative periods along the time axis) and each scalar/annual field with +. Returns a single bundle with the same structure as get_local_output_bundle.

get_local_output_bundle(inputs, setup, subproblems_local)

Extract and assemble all output arrays from the subproblems on a single worker.

Iterates over subproblems_local, extracting power dispatch, emissions, charge, storage, curtailment, NSE, transmission flows and losses, fuel consumption, dual-based prices, storage duals, and unit commitment decisions from each solved JuMP model. Time-series arrays are concatenated along the time axis (representative periods ordered by subproblem_index) to produce full-year matrices.

Returns a NamedTuple with all operational output arrays needed by the write functions, plus has_subproblem_duals indicating whether LP duals were available.

write_benders_output(benders_results, outpath, setup, inputs, planning_problem, subproblems)

Write all Benders decomposition outputs to outpath.

Orchestrates the full output pipeline: convergence history, capacity, network expansion, policy requirements, costs, operational time series (power, charge, storage, curtailment, NSE, power balance, emissions, fuel consumption, transmission), capacity factors, shadow-price-based outputs (LMPs, reliability prices, storage duals, energy revenue, charging costs), unit commitment decisions, and planning problem duals. Each output is guarded by the corresponding key in setup["WriteOutputsSettingsDict"]; outputs default to enabled when the key is absent.

If the planning problem has no solver values (e.g. the algorithm did not converge), only the status file and convergence CSV are written and the function returns early.

write_capacity_benders(path, inputs, setup, planning_problem, planning_sol)

Write capacity.csv for a Benders run using the incumbent planning solution directly.

Capacity quantities are evaluated by substituting the best-incumbent variable values from planning_sol.values into the planning-problem variables and capacity expressions (value(v -> planning_sol.values[name(v)], ...)), so the output reflects the same first-stage solution as the dispatch outputs regardless of the planning-problem model's post-Benders solve state. This mirrors the monolithic write_capacity column-for-column except that CapacityConstraintDual is omitted: that column is a shadow price, which is not available from planning_sol (and is not reliably recoverable from the cut-laden master). It can be reintroduced once a trustworthy planning dual is available.

write_capacityfactor_benders(path, inputs, setup, benders_bundle, planning_problem)

Write capacity factors using power output from subproblems and installed capacity from the planning problem.

write_charge(path, inputs, setup, charge, charge_ids)

Write charging power to charge.csv for the subset of resources indexed by charge_ids.

charge is a (length(charge_ids) × T) matrix of unscaled values.

write_charging_cost_benders(path, inputs, setup, benders_bundle)

Write annual charging costs for storage and flexible demand resources using subproblem LMPs.

write_co2_cap_benders(path, inputs, setup, planning_problem)

Write CO2 prices from the Benders planning problem (constraint cCO2Emissions_systemwide_planning).

write_co2_emissions_plant(path, inputs, setup, emissions_plant)

Write per-plant annual CO2 emissions to emissions_plant.csv.

emissions_plant is a (G × T) matrix of unscaled emissions values. Scale factor is applied before computing the annual weighted sum. Time-series columns are written when setup["WriteOutputs"] != "annual".

write_curtailment_benders(path, inputs, setup, curtailment)

Write VRE curtailment to curtailment.csv.

curtailment is a (G × T) matrix of unscaled curtailment values (available generation minus dispatched generation for VRE resources, zero for others).

write_emissions_benders(path, inputs, setup, emissions_by_zone)

Write total CO2 emissions aggregated by zone to emissions.csv.

emissions_by_zone is a (Z × T) matrix of unscaled zone-level emissions. Annual or time-series output is selected by setup["WriteOutputs"].

write_energy_revenue_benders(path, inputs, setup, benders_bundle)

Write annual energy revenue for each generator using subproblem LMPs.

write_fuel_consumption_benders(path, inputs, setup, benders_bundle)

Write all fuel consumption outputs.

Calls write_fuel_consumption_plant_benders, write_fuel_consumption_ts_benders (when time-series output is requested), and write_fuel_consumption_tot_benders.

write_fuel_consumption_plant_benders(path, inputs, setup, benders_bundle)

Write per-plant annual fuel costs and heat input to Fuel_cost_plant.csv.

Includes multi-fuel breakdown columns when inputs["MULTI_FUELS"] is non-empty.

write_fuel_consumption_tot_benders(path, inputs, setup, benders_bundle)

Write total annual fuel consumption aggregated by fuel type to FuelConsumption_total_MMBTU.csv.

write_fuel_consumption_ts_benders(path, inputs, setup, benders_bundle)

Write per-plant hourly fuel consumption time series to FuelConsumption_plant_MMBTU.csv.

Only called when setup["WriteOutputs"] != "annual". Optionally reconstructs the full time series when OutputFullTimeSeries is enabled.

write_nse_benders(path, inputs, setup, nse)

Write non-served energy (NSE) by segment and zone to nse.csv.

nse is a (SEG*Z × T) matrix laid out as segments cycling within zones. Annual or time-series output is selected by setup["WriteOutputs"].

write_nw_expansion_benders(path, inputs, setup, planning_problem, planning_sol)

Write network_expansion.csv for a Benders run using the incumbent planning solution.

Transmission reinforcement (vNEW_TRANS_CAP) is a first-stage variable, so its value is read from planning_sol by substituting the incumbent variable values into the planning-problem variable (value(v -> planning_sol.values[name(v)], ...)) — no solved model state required. Mirrors the monolithic write_nw_expansion.

write_power(path, inputs, setup, power)

Write per-resource power output to power.csv.

power is a (G × T) matrix of unscaled dispatch values. The scale factor is applied, annual weighted sums are computed, and time-series columns are included when setup["WriteOutputs"] != "annual".

write_power_balance_benders(path, inputs, setup, benders_bundle)

Write the zonal power balance decomposition to power_balance.csv.

Assembles the (Lcomp*Z × T) power-balance matrix from the operational time series stored in benders_bundle, covering generation, storage discharge/charge, flexible demand, NSE, transmission net exports and losses, demand, and optional electrolyzer, VRE-storage, and fusion components.

write_price_benders(path, inputs, setup, price)

Write locational marginal prices (LMPs) from Benders subproblem duals. price is a (Z × T) matrix already scaled ($/MWh) and divided by period weights.

write_reliability_benders(path, inputs, setup, reliability)

Write reliability prices (shadow prices on NSE capacity constraints) from Benders subproblem duals. reliability is a (Z × T) matrix already scaled ($/MWh) and divided by period weights.

write_storage_benders(path, inputs, setup, stored, stored_ids)

Write state-of-charge values to storage.csv for resources indexed by stored_ids.

stored is a (length(stored_ids) × T) matrix of unscaled state-of-charge values.

write_storagedual_benders(path, inputs, setup, storagedual)

Write storage state-of-charge balance duals from Benders subproblem LPs. storagedual is a (G × T) matrix with duals divided by period weights (scale applied here).

write_transmission_flows_benders(path, inputs, setup, flow)

Write line-level power flows to flow.csv.

flow is a (L × T) matrix of unscaled flow values. Annual or time-series output is selected by setup["WriteOutputs"].

write_transmission_losses_benders(path, inputs, setup, tlosses)

Write line-level transmission losses to tlosses.csv.

tlosses is a (L × T) matrix of unscaled loss values. Annual or time-series output is selected by setup["WriteOutputs"].

write_ucommit_benders(path, inputs, setup, data, filename)

Write unit commitment, startup, or shutdown decisions (generic helper). data is a (COMMIT_count × T) matrix of values.

write_planning_problem_costs(path, inputs, setup, benders_results, planning_problem, benders_bundle=nothing)

Write the Benders cost breakdown to planning_problem_costs.csv.

First-stage (planning) costs — total fixed cost (cFix), network expansion cost (cNetworkExp), and unmet planning policy penalty (cUnmetPlanningPolicyPenalty) — are evaluated against the best Benders planning solution stored in benders_results.planning_sol (no re-solve required, so they are valid even when the master model holds no solver values).

When benders_bundle is supplied, the operational (second-stage) costs aggregated from the solved subproblems are added as additional rows, mirroring the monolithic write_costs: variable O&M (cVar), fuel (cFuel), non-served energy (cNSE), and startup (cStart, non-fuel startup O&M plus startup fuel). In that case cTotal is the actual cost of the incumbent design (fixed + network + operational), which equals the Benders upper bound. When benders_bundle is nothing (e.g. the no-values early-return path) only the first-stage rows are written and cTotal is taken from the master objective value(eObj).

Per-zone columns (Zone1 … ZoneZ) are appended when multiple zones exist. Fixed costs are always broken out by zone; with a bundle the operational costs are too (matching the monolithic per-zone layout). System-wide rows without a per-resource attribution — cNetworkExp and cUnmetPlanningPolicyPenalty — are written as "-" in each zone column.