Juha Kiviluoma, Arttu Tupala, Antti Soininen
Should be quite fast for linear problems.
perfect foresight, but can use limited horizon
GNU Library or "Lesser" General Public License version 3.0 (LGPL-3.0)
Typically linear cost minimization, but unit online decisions can be mixed-integer linear (and effectively investment decisions too).
IRENA FlexTool is an energy and power systems model for understanding the role of variable power generation in future energy systems. It performs capacity expansion planning as well as operational planning. VTT develops the model for IRENA (and receives a lot of feedback from IRENA to improve the model)