MPSGE Overview
February 27, 2026
At its core, the MPSGE.jl package creates a JuMP.jl model with the necessary constraints of a CGE model. Namely: zero profit, income balance, market clearance, and any auxiliary constraints. This appendix gives the mathematical background on how these constraints are created given a model specified by MPSGE. Read more
Basic Structure of a Scalar MPSGE.jl Model
February 16, 2026
This example will create a model three ways: in MPSGE/GAMS, in MPSGE.jl, and as an explicit algebraic MCP using JuMP.jl. This example will assume that you are familiar with MPSGE/GAMS syntax and are interested in experimenting with Julia. The MPSGE.jl syntax is designed to mirror the MPSGE/GAMS syntax as closely as possible, so if you are familiar with MPSGE/GAMS, you should be able to understand MPSGE.jl with ease. Read more
A Julia/JuMP Introduction
January 31, 2026
This example will introduce the basic syntax of JuMP, a modeling language for optimization problems in Julia. We start with a simple example to introduce syntactic elements of JuMP and compare it to GAMS syntax. Then we will detail a slightly larger example. Read more
Aggregating WiNDC National
January 06, 2026
This example will walk through the code in thisrepository. This repository contains an example aggregating theWiNDC National dataset to a size that can be run with a trial PATHlicense (less than 300 variables in the model). Read more
Closed Economy Model with Monopoly in the X Sector
July 23, 2025
This example is a conversion of the Markusen M51 model into Julia. This is a standard two-good, two-factor, closed-economy general-equilibrium model. Activities are X, Y and W (welfare or utility). Factors of production are called unskilled and skilled labor. Unskilled labor is typically called L with a price of PW or just W, and skilled labor is called S with a price of PZ or just Z. PU is the price of a unit of utility (the value of the unit expenditure function). Read more