Sustainability now becomes one of the key issues in innovating existing environments, where we live, and behaviours of people, how we live. There have been a lot of new attempts and initiatives for promoting the sustainability by government, industries, and communities. However, for the survival and successful adoption of the innovative efforts to real world, they need to be institutionalized or established as stable formal/informal institutions or business models. Especially, the efforts in private sectors, incumbents or entrepreneurs, should develop and find out, even through trial and errors, a viable business model for the sustainability. This paper reviews the various initiatives from the business model perspective, analyze the characteristics of the sustainability business models and suggest key dimensions to design new business models for sustainability.