Recent years have seen the emergence of Eco-innovation as the way of the future, in which regards the valuation of the growth potential in a volatile environment. First regarded as a response to negative externalities, then as normal elements in the industrial dynamics, eco-innovations are acknowledged as extremely significant in the constantly changing competitive conditions. This paper presents the concept of eco-innovation and its taxonomy, in order to set the bases for further research within a project aimed at providing the Romanian SMEs with the necessary tools for improving their eco-innovative capacity and making use of their natural potential. In the first stages of the project, the research being reflected in this paper, a theoretical overview of the macroeconomic and microeconomic elements of eco-innovation, alongside a series of models (both based on indicators The Shift Model, as well as mathematical modeling The Percolation Diffusion Model) are presented. This work was supported by CNCSIS-UEFISCSU, project number PN II-RU TE_328/2010