Applied General Equilibrium Modelling GLOBE, STAGE and R23 Models

© Scott McDonald & Karen Thierfelder


The Site

This site provides access to technical documentation and (GAMS) code for a range on applied general equilibrium models and associated code for data handling, miscellaneous teaching materials and working papers.

All the teaching materials provided on this site are provided free of charge for academic and training purposes: we appreciate  feedback.

All the codes on this site for the STAGE and GLOBE models are open source subject to the Creative Commons BY-NC-SA (Attribution - Non Commercial - Share Alike) licence, i.e., free of charge for academic use.

PLEASE read Conditions of Use carefully before using any of this material.

The Models

As with all CGE models, the models here depend on the data and price systems developed by Richard Stone and associates. They are SAM based models.

The models available from this site are descendants of the models associated with Dervis, de Melo and Robinson (1982). The models are developments of the USDA’s single country CGE model from 1990 (Robinson, et al., 1990; Kilkenny, 1991).

GLOBE is a suite of global/multi region CGE models calibrated using data from the GTAP and/or WIOD databases presented as global SAMs.

STAGE is a suite of single country CGE models that require a country specific SAMs for calibration.

R23 is a global development of the  well-known 123 model.

The codes for these versions are robust formulations. Persons with good GAMS experience can easily use these models.

Technical documentation for variants of the models is also provided.


  1. ‘Practical CGE Modelling: Online courses 2018-9 are open to recruit participants. LINK.

  1. ‘Single Country CGE Modelling: Online courses’ 2018-9 are open to recruit participants. LINK

  1. ‘Global CGE Modelling: Online courses’ 2018-9 are open to recruit participants. LINK

  1. ‘Advanced Training/Support. LINK


All the code provided via this web site is done so under the creative Commons BY-NC-SA (Attribution - Non Commercial - Share Alike) licence. (See ).  If you want to use the code for commercial use you need to contact the authors.

‘Black Boxes’

CGE models are NOT ‘black boxes’. Given an understanding of general equilibrium (GE) microeconomics, and some macroeconomics, and the ability to read a simple programming language, all model insights are ultimately obvious. GE systems may be complex, just as the world is complex; but an unwillingness to learn enough economics and a ‘language’ does not make a CGE model a ‘black box’.