There are immense potential and opportunities for biogas implementation in developing countries, but lack of adequate infrastructures, sufficient capital, and appropriate policy have hindered successful implementation. The previous implementation was supported by governments, international organizations (the United Nations and European Union), and nongovernmental organizations and partly by carbon trading through Voluntary Emission Reductions managed by the World Bank. However, biogas technology in developing countries still require advancement in all levels from small-scale (household or domestic implementation) to large-scale implementation for energy generation, electricity generation, and transportation. There are challenges associated with policy, funding, technical services, sustainability, awareness, and education which are key factors to achieving full potential of biogas in developing countries. These challenges and solutions are briefly discussed in this work. Technical training, enforcement of policy, public–private partnership funding, record keeping, and advertisement of biogas programs are recommended for enhanced biogas implementation. © 2019 Elsevier B.V.