Tutorial 1: Configuring Settings
Interactive Notebook of the tutorial
GenX is easy to customize to fit a variety of problems. In this tutorial, we show which settings are available to change, what their defaults are, and how to change them in your code.
What settings are there?
There are 21 settings available to edit in GenX, found in the file genx_settings.yml. These settings are described at the Model settings parameters page of the documentation. The file is located in the settings folder in the working directory. To change the location of the file, edit the settings_path variable in Run.jl within your directory.
Most settings are set as either 0 or 1, which correspond to whether or not to include a specific feature. For example, to use TimeDomainReduction, you would set its parameter to 1 within genx_settings.yml. If you would like to run GenX without it, you would set its parameter to 0.
Other settings, such as CO2Cap, have more options corresponding to integers, while some settings such as ModelingtoGenerateAlternativeSlack take a numerical input directly (in this case, the slack value). Two settings, Solver and TimeDomainReductionFolder take in text as input. To learn more about different solvers, read here. For TimeDomainReductionFolder, specify the name of the directory you wish to see the results in. For a more comprehensive description of the input options, see the documentation linked above.
To see how changing the settings affects the outputs, see Tutorials 3 and 7.
Below is the settings file for example_systems/1_three_zones:
All genx_settings.yml files in example_systems specify most parameters. When configuring your own settings, however, it is not necessary to input all parameters as defaults are specified for each one in configure_settings.jl.
To open genx_settings.yml in Jupyter, use the function YAML.load(open(...)) and navigate to file in the desired directory:
using YAML
genx_settings_SNE = YAML.load(open("example_systems/1_three_zones/settings/genx_settings.yml")) Dict{Any, Any} with 19 entries:
"NetworkExpansion" => 1
"ModelingToGenerateAlternativeIterations" => 3
"ParameterScale" => 1
"EnergyShareRequirement" => 0
"PrintModel" => 0
"TimeDomainReduction" => 1
"Trans_Loss_Segments" => 1
"CapacityReserveMargin" => 0
"ModelingtoGenerateAlternativeSlack" => 0.1
"MethodofMorris" => 0
"StorageLosses" => 1
"MultiStage" => 0
"OverwriteResults" => 0
"UCommit" => 2
"ModelingToGenerateAlternatives" => 0
"MaxCapReq" => 0
"MinCapReq" => 1
"CO2Cap" => 2
"WriteShadowPrices" => 1Since all settings have defaults, you only need to specify the settings you would like to change. In fact, you can leave your settings file completely blank and it will still run! Let's try editing genx_settings in example_systems/1_three_zones to contain no parameters:
new_params = Dict() # Empty dictionary
YAML.write_file("example_systems/1_three_zones/settings/genx_settings.yml", new_params)The empty file will look like this:
Now, we run GenX and output the file capacity.csv from the results folder. To do this, we use the function include, which takes a .jl file and runs it in jupyter notebook:
include("example_systems/1_three_zones/Run.jl") Configuring Settings
Configuring Solver
Loading Inputs
Reading Input CSV Files
Network.csv Successfully Read!
Demand (load) data Successfully Read!
Fuels_data.csv Successfully Read!
[ Info: Thermal.csv Successfully Read.
[ Info: Vre.csv Successfully Read.
[ Info: Storage.csv Successfully Read.
[ Info: Resource_minimum_capacity_requirement.csv Successfully Read.
Summary of resources loaded into the model:
-------------------------------------------------------
Resource type Number of resources
=======================================================
Thermal 3
VRE 4
Storage 3
=======================================================
Total number of resources: 10
-------------------------------------------------------
Generators_variability.csv Successfully Read!
Validating time basis
CSV Files Successfully Read In From GenX-Tutorials/Tutorials/example_systems/1_three_zones
Generating the Optimization Model
Discharge Module
Non-served Energy Module
Investment Discharge Module
Fuel Module
CO2 Module
Investment Transmission Module
Transmission Module
Dispatchable Resources Module
Storage Resources Module
Storage Investment Module
Storage Core Resources Module
Storage Resources with Symmetric Charge/Discharge Capacity Module
Thermal (No Unit Commitment) Resources Module
Time elapsed for model building is
5.677411542
Solving Model
Running HiGHS 1.6.0: Copyright (c) 2023 HiGHS under MIT licence terms
Presolving model
402430 rows, 306077 cols, 1216044 nonzeros
334406 rows, 273093 cols, 1179498 nonzeros
Presolve : Reductions: rows 334406(-208720); columns 273093(-217481); elements 1179498(-265378)
Solving the presolved LP
IPX model has 334406 rows, 273093 columns and 1179498 nonzeros
Input
Number of variables: 273093
Number of free variables: 0
Number of constraints: 334406
Number of equality constraints: 54616
Number of matrix entries: 1179498
Matrix range: [4e-07, 1e+01]
RHS range: [7e+02, 2e+04]
Objective range: [1e-01, 1e+05]
Bounds range: [2e+00, 2e+04]
Preprocessing
Dualized model: no
Number of dense columns: 13
Range of scaling factors: [5.00e-01, 1.00e+00]
IPX version 1.0
Interior Point Solve
Iter P.res D.res P.obj D.obj mu Time
0 7.92e+03 4.68e+04 3.32147673e+12 -5.29874805e+12 3.77e+08 0s
1 2.52e+03 9.09e+03 -3.25877734e+12 -7.21381041e+12 1.13e+08 0s
2 4.85e+02 2.35e+03 -3.11396725e+11 -5.19621090e+12 2.79e+07 1s
3 3.29e+02 3.98e+02 -1.38395149e+11 -1.60011105e+12 1.06e+07 4s
Constructing starting basis...
4 2.79e+02 2.18e+02 -9.20089553e+10 -1.12770108e+12 6.86e+06 21s
5 9.53e+00 7.39e+01 9.91668627e+10 -5.58589863e+11 1.62e+06 24s
6 3.40e+00 1.42e+01 5.89999652e+10 -1.16297421e+11 3.82e+05 34s
7 9.22e-01 2.82e+00 3.17189476e+10 -3.28274389e+10 1.18e+05 39s
8 3.21e-01 9.06e-01 1.54947223e+10 -9.43126058e+09 4.16e+04 44s
9 1.43e-01 7.07e-02 1.25444514e+10 -2.07076014e+09 2.26e+04 50s
10 7.24e-02 2.69e-02 9.56770103e+09 6.98368943e+08 1.36e+04 59s
11 5.85e-02 2.34e-02 9.04050442e+09 9.72471748e+08 1.23e+04 76s
12 4.07e-02 1.86e-02 8.41352551e+09 1.36107427e+09 1.07e+04 91s
13 2.13e-02 1.04e-02 7.27813663e+09 2.37139743e+09 7.40e+03 106s
14 1.23e-02 9.58e-03 6.85995182e+09 2.42302634e+09 6.65e+03 121s
15 6.29e-03 8.69e-03 6.30996161e+09 2.53750169e+09 5.63e+03 137s
16 5.05e-03 4.32e-03 6.20375634e+09 3.06005287e+09 4.69e+03 153s
17 3.10e-03 2.90e-03 5.81685189e+09 3.42321619e+09 3.56e+03 171s
18 2.46e-03 1.90e-03 5.69010358e+09 3.69724506e+09 2.97e+03 193s
19 2.17e-03 1.40e-03 5.64332584e+09 3.92063823e+09 2.56e+03 211s
20 1.68e-03 1.08e-03 5.58574539e+09 4.00019716e+09 2.36e+03 225s
21 1.67e-03 1.03e-03 5.58471864e+09 3.99434084e+09 2.36e+03 239s
22 1.62e-03 7.41e-04 5.57432205e+09 4.11610384e+09 2.17e+03 253s
23 1.30e-03 5.69e-04 5.49997107e+09 4.19795422e+09 1.94e+03 271s
24 1.30e-03 5.50e-04 5.49974396e+09 4.19969138e+09 1.93e+03 290s
25 1.02e-03 2.93e-04 5.41913926e+09 4.35952658e+09 1.57e+03 303s
26 7.07e-04 2.24e-04 5.30762980e+09 4.42283116e+09 1.31e+03 348s
27 6.98e-04 2.04e-04 5.30566881e+09 4.42740669e+09 1.30e+03 368s
28 5.75e-04 1.34e-04 5.25404059e+09 4.51834486e+09 1.09e+03 384s
29 5.11e-04 5.18e-05 5.23316215e+09 4.57449214e+09 9.78e+02 422s
30 3.06e-04 3.13e-05 5.11136554e+09 4.65641695e+09 6.75e+02 463s
31 2.48e-04 2.50e-05 5.07790558e+09 4.68190888e+09 5.88e+02 556s
32 2.26e-04 1.93e-05 5.07281283e+09 4.69130536e+09 5.66e+02 578s
33 1.57e-04 9.24e-06 5.02737766e+09 4.76799355e+09 3.85e+02 610s
34 9.42e-05 6.90e-06 4.99047612e+09 4.78396507e+09 3.06e+02 633s
35 9.03e-05 5.12e-06 4.98763526e+09 4.80106034e+09 2.77e+02 662s
36 3.98e-05 2.82e-06 4.94599392e+09 4.83065342e+09 1.71e+02 671s
37 2.58e-05 2.14e-06 4.93651437e+09 4.83728484e+09 1.47e+02 682s
38 2.50e-05 1.47e-06 4.93618595e+09 4.83982232e+09 1.43e+02 693s
39 2.07e-05 1.07e-06 4.93270993e+09 4.84546499e+09 1.29e+02 703s
40 1.99e-05 9.16e-07 4.93246702e+09 4.84544485e+09 1.29e+02 712s
41 1.27e-05 5.14e-07 4.92622155e+09 4.85308727e+09 1.08e+02 749s
42 6.18e-06 2.78e-07 4.91448823e+09 4.86733398e+09 6.98e+01 756s
43 5.75e-06 2.48e-07 4.91402422e+09 4.86791504e+09 6.83e+01 768s
44 3.92e-06 2.41e-07 4.91163152e+09 4.86829302e+09 6.42e+01 772s
45 3.73e-06 2.31e-07 4.91112985e+09 4.86905244e+09 6.23e+01 776s
46 1.94e-06 1.39e-07 4.90762167e+09 4.87412061e+09 4.96e+01 779s
47 1.92e-06 1.37e-07 4.90757967e+09 4.87423812e+09 4.94e+01 783s
48 1.25e-06 1.12e-07 4.90638638e+09 4.87546419e+09 4.58e+01 787s
49 7.47e-07 8.85e-08 4.90346514e+09 4.87810372e+09 3.75e+01 790s
50 6.48e-07 7.92e-08 4.90314008e+09 4.87888853e+09 3.59e+01 794s
51 4.98e-07 6.91e-08 4.90218004e+09 4.88024918e+09 3.25e+01 797s
52 4.95e-07 6.83e-08 4.90215919e+09 4.88024410e+09 3.24e+01 801s
53 4.90e-07 6.80e-08 4.90216775e+09 4.88028007e+09 3.24e+01 804s
54 4.36e-07 6.78e-08 4.90188796e+09 4.88043523e+09 3.18e+01 806s
55 2.99e-07 6.38e-08 4.90162529e+09 4.88076205e+09 3.09e+01 809s
56 1.58e-07 4.39e-08 4.90042224e+09 4.88323839e+09 2.54e+01 811s
57 1.34e-07 4.22e-08 4.90059270e+09 4.88334431e+09 2.55e+01 813s
58 1.04e-07 3.50e-08 4.90003483e+09 4.88459728e+09 2.29e+01 815s
59 9.50e-08 3.37e-08 4.90009649e+09 4.88472024e+09 2.28e+01 818s
60 8.60e-08 3.33e-08 4.90001976e+09 4.88479577e+09 2.25e+01 820s
61 7.03e-08 2.51e-08 4.89985257e+09 4.88580810e+09 2.08e+01 823s
62 5.25e-08 2.49e-08 4.89952348e+09 4.88588451e+09 2.02e+01 825s
63 4.41e-08 2.20e-08 4.89936497e+09 4.88640830e+09 1.92e+01 827s
64 1.95e-08 2.05e-08 4.89921316e+09 4.88671585e+09 1.85e+01 829s
65 1.85e-08 2.04e-08 4.89917163e+09 4.88677402e+09 1.84e+01 831s
66 9.08e-09 1.50e-08 4.89794260e+09 4.88826475e+09 1.43e+01 832s
67 3.26e-09 1.41e-08 4.89826703e+09 4.88831416e+09 1.47e+01 834s
68 2.55e-09 9.27e-09 4.89776323e+09 4.89045614e+09 1.08e+01 836s
69 4.15e-10 6.43e-09 4.89731419e+09 4.89088355e+09 9.52e+00 838s
70 9.46e-11 6.14e-09 4.89657446e+09 4.89107504e+09 8.14e+00 840s
71 7.28e-12 2.97e-09 4.89649409e+09 4.89256997e+09 5.81e+00 842s
72 8.60e-12 2.23e-09 4.89597151e+09 4.89267917e+09 4.87e+00 844s
73 7.28e-12 1.47e-09 4.89583195e+09 4.89300343e+09 4.19e+00 845s
74 7.42e-12 1.28e-09 4.89583188e+09 4.89303732e+09 4.14e+00 847s
75 7.03e-12 1.11e-09 4.89582547e+09 4.89341063e+09 3.57e+00 849s
76 7.28e-12 6.11e-10 4.89574070e+09 4.89395382e+09 2.65e+00 850s
77 5.46e-12 1.48e-09 4.89568118e+09 4.89402122e+09 2.46e+00 852s
78 7.28e-12 5.82e-10 4.89555416e+09 4.89441725e+09 1.68e+00 854s
79 5.46e-12 9.31e-10 4.89551185e+09 4.89441779e+09 1.62e+00 856s
80 7.28e-12 8.00e-10 4.89548266e+09 4.89444930e+09 1.53e+00 858s
81 5.46e-12 4.66e-10 4.89540821e+09 4.89457401e+09 1.23e+00 859s
82 3.64e-12 4.95e-10 4.89518737e+09 4.89480554e+09 5.65e-01 861s
83 7.28e-12 1.03e-09 4.89518640e+09 4.89481077e+09 5.56e-01 864s
84 5.46e-12 8.59e-10 4.89516124e+09 4.89485596e+09 4.52e-01 866s
85 3.64e-12 5.97e-10 4.89510929e+09 4.89488390e+09 3.34e-01 869s
86 3.64e-12 7.28e-10 4.89511555e+09 4.89489396e+09 3.28e-01 870s
87 3.64e-12 9.75e-10 4.89509232e+09 4.89493928e+09 2.27e-01 872s
88 5.46e-12 1.35e-09 4.89508607e+09 4.89497465e+09 1.65e-01 875s
89 5.46e-12 2.34e-09 4.89507160e+09 4.89500290e+09 1.02e-01 877s
90 3.64e-12 4.66e-10 4.89506888e+09 4.89501168e+09 8.47e-02 879s
91 3.64e-12 8.15e-10 4.89505281e+09 4.89502676e+09 3.86e-02 882s
92 7.28e-12 2.90e-09 4.89504804e+09 4.89503126e+09 2.48e-02 884s
93 7.28e-12 3.11e-09 4.89504828e+09 4.89503139e+09 2.50e-02 886s
94 3.64e-12 3.94e-09 4.89504182e+09 4.89503147e+09 1.53e-02 887s
95 7.28e-12 4.55e-09 4.89503900e+09 4.89503404e+09 7.34e-03 889s
96 7.28e-12 3.97e-09 4.89503797e+09 4.89503587e+09 3.11e-03 891s
97 3.64e-12 7.99e-09 4.89503736e+09 4.89503634e+09 1.50e-03 893s
98 3.64e-12 7.41e-09 4.89503673e+09 4.89503642e+09 4.55e-04 895s
99 3.64e-12 9.50e-09 4.89503663e+09 4.89503648e+09 2.22e-04 897s
100* 3.64e-12 1.32e-08 4.89503652e+09 4.89503651e+09 1.82e-05 899s
101* 3.64e-12 1.08e-08 4.89503652e+09 4.89503652e+09 2.25e-06 901s
102* 3.64e-12 3.12e-08 4.89503652e+09 4.89503652e+09 1.34e-07 903s
103* 3.64e-12 1.51e-08 4.89503652e+09 4.89503652e+09 8.82e-09 905s
Running crossover as requested
Primal residual before push phase: 1.27e-04
Dual residual before push phase: 5.11e-05
Number of dual pushes required: 103575
Number of primal pushes required: 6498
Summary
Runtime: 905.57s
Status interior point solve: optimal
Status crossover: optimal
objective value: 4.89503652e+09
interior solution primal residual (abs/rel): 6.64e-11 / 3.97e-15
interior solution dual residual (abs/rel): 1.48e-08 / 1.05e-13
interior solution objective gap (abs/rel): 1.62e-03 / 3.31e-13
basic solution primal infeasibility: 8.04e-10
basic solution dual infeasibility: 2.05e-12
Ipx: IPM optimal
Ipx: Crossover optimal
Solving the original LP from the solution after postsolve
Model status : Optimal
IPM iterations: 103
Crossover iterations: 12550
Objective value : 4.8950365168e+09
LP solved for primal
Writing Output
Time elapsed for writing costs is
1.118419208
Time elapsed for writing capacity is
0.3498405
Time elapsed for writing power is
0.784041083
Time elapsed for writing charge is
0.317718542
Time elapsed for writing capacity factor is
0.262756083
Time elapsed for writing storage is
0.144432875
Time elapsed for writing curtailment is
0.235764667
Time elapsed for writing nse is
0.673588083
Time elapsed for writing power balance is
0.533529375
Time elapsed for writing transmission flows is
0.111765375
Time elapsed for writing transmission losses is
0.139880458
Time elapsed for writing emissions is
0.244327417
Time elapsed for writing reliability is
0.163886125
Time elapsed for writing storage duals is
0.43827175
Time elapsed for writing fuel consumption is
0.50627925
Time elapsed for writing co2 is
0.173650209
Time elapsed for writing price is
0.07908475
Time elapsed for writing energy revenue is
0.251686916
Time elapsed for writing charging cost is
0.174489958
Time elapsed for writing subsidy is
0.188284041
Time elapsed for writing time weights is
0.050749417
Time elapsed for writing net revenue is
0.797592334
Wrote outputs to GenX-Tutorials/Tutorials/example_systems/1_three_zones/results
Time elapsed for writing is
8.276978416The function Run.jl will build and then solve the model according to the specified parameters. These results will then be output into a results folder in the same directory. Note that the results folders are not overwritten with each run.
using CSV
using DataFrames
results = CSV.read(open("example_systems/1_three_zones/Results/capacity.csv"),DataFrame)11×15 DataFrame
| Row | Resource | Zone | StartCap | RetCap | NewCap | EndCap | CapacityConstraintDual | StartEnergyCap | RetEnergyCap | NewEnergyCap | EndEnergyCap | StartChargeCap | RetChargeCap | NewChargeCap | EndChargeCap |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| String31 | String3 | Float64 | Float64 | Float64 | Float64 | String3 | Float64 | Float64 | Float64 | Float64 | Float64 | Float64 | Float64 | Float64 | |
| 1 | MA_natural_gas_combined_cycle | 1 | 0.0 | 0.0 | 7394.75 | 7394.75 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 2 | CT_natural_gas_combined_cycle | 2 | 0.0 | 0.0 | 2305.82 | 2305.82 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 3 | ME_natural_gas_combined_cycle | 3 | 0.0 | 0.0 | 716.666 | 716.666 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 4 | MA_solar_pv | 1 | 0.0 | 0.0 | 21186.5 | 21186.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 5 | CT_onshore_wind | 2 | 0.0 | 0.0 | 11905.5 | 11905.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 6 | CT_solar_pv | 2 | 0.0 | 0.0 | 16578.8 | 16578.8 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 7 | ME_onshore_wind | 3 | 0.0 | 0.0 | 12767.3 | 12767.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 8 | MA_battery | 1 | 0.0 | 0.0 | 3362.3 | 3362.3 | 0.0 | 0.0 | 0.0 | 19427.7 | 19427.7 | 0.0 | 0.0 | 0.0 | 0.0 |
| 9 | CT_battery | 2 | 0.0 | 0.0 | 5318.36 | 5318.36 | 0.0 | 0.0 | 0.0 | 27274.1 | 27274.1 | 0.0 | 0.0 | 0.0 | 0.0 |
| 10 | ME_battery | 3 | 0.0 | 0.0 | 2095.3 | 2095.3 | 0.0 | 0.0 | 0.0 | 7096.27 | 7096.27 | 0.0 | 0.0 | 0.0 | 0.0 |
| 11 | Total | n/a | 0.0 | 0.0 | 83631.3 | 83631.3 | n/a | 0.0 | 0.0 | 53798.1 | 53798.1 | 0.0 | 0.0 | 0.0 | 0.0 |
As you can see, this runs without a problem! To try with your own parameters, edit the new_params dictionary with whatever parameters you'd like to try and run the cells again.Note: to output the results, you'll have to either delete the previous results folder, or input the name of the new results folder (e.g. results_1) when calling CSV.read as above.
Finally, let's rewite genx_settings.yml to put the original settings in the example back:
YAML.write_file("example_systems/1_three_zones/settings/genx_settings.yml", genx_settings_TZ)