Abstract: Biogas is such a solution which produces clean and renewable energy, reduces the need to import fossil fuels, create jobs for skilled and unskilled persons and provides a new stream of income to farmers and investors. For more sustainable development of this technology, policy-makers should reform the existing institutional framework by reorganizing subsidies, motivating and attracting investor with flexible financial conditions, liberalizing the management of gas grids and involving farmers in local projects. In most of the cases, biogas projects become unsuccessful due to the lacking of financial attractiveness. Therefore, it is a great challenge to find a proper mode of design and implementation of biogas installations that ensure participation, ownership and responsibility of the final users and a sustainable financing mechanism. Community business connectivity can have played an important role in stimulating and shaping the spread of biogas technology. This study proposed a number of business models and micro-economic evaluation systems to calculate their economic viability which could play role to improve the sustainability of the biogas technology.