The document discusses green business models (GBM), which aim to provide environmental benefits while remaining economically viable. GBMs have the potential to enhance competitiveness and productivity, create jobs, and lower environmental impacts. However, the concept of GBMs remains elusive, posing a barrier to their dissemination. The document reviews the history of GBMs and various studies on their potential and challenges. It also provides definitions of GBMs, discusses categories and examples of GBMs, and identifies barriers that have hindered their adoption, such as a lack of knowledge and risk aversion.