Regarding the Global MARKAL MACRO (GMM) model, the following extensions were considered: a.the development of a stand-alone transportation model and its integration to GMM after its completion, calibration and testing and after including technology spillovers b.the construction of a link between GMM and the TFLC interface (called Soft-link) c.the development of a simulation routine (CLIMATE) capable of estimating objectives related to climate change.