Gekko users

Gekko has been used for serious real-world purposes for quite a few years now.

  • Since 2009, Gekko has been used by the Danish Energy Agency ( and the Technical University of Denmark ( for forcasting the future Danish energy consumption with the EMMA energy model (about 2000 equations). The EMMA project has been discontinued.
  • Since 2010, Gekko is being used by the Danish Ministry of Finance ( and the Danish Ministry for Economic Affairs and the Interior ( for their short-, medium- and long-run economic forecasts on the macroeconomic model ADAM (about 4000 equations, annual).
  • Since 2011, Gekko is being used for model simulation (ADAM) on the recurring 1-semester course “Economic forecasts in practice” at the University of Copenhagen.
  • Since 2012, Statistics Denmark ( is distributing Gekko to its paying customers of the macroeconomic model ADAM. These ADAM ‘customers’ include ministeries, larger banks, interest groups, and universities. Statistics Denmark regularly conducts two-day courses on the use of ADAM and Gekko. (To avoid misunderstandings: note that Gekko is free, whereas ADAM is generally not. Gekko can run any macro model and is not particularly tied to ADAM).
  • The Danish model SMEC (annual) runs via the Gekko solver (Danish Economic Councils).
  • The Danish model MONA (quarterly) runs via the Gekko solver (Central bank of Denmark).
  • The new Danish model MAKRO (annual) runs via Gekko as user interface, whereas the model itself is solved with GAMS. The model is used by the Danish Ministry of Finance and others.
  • The quarterly national accounts at Statistics Denmark are using Gekko.
  • CRT.
  • Since Gekko is open-source and free to use and download, there may be users that the Gekko editor has not heard of.

In addition to this, Gekko has been successfully tested on the CPB (Dutch Bureau for Economic Policy Analysis) short- and medium term model SAFFIER.