Energy security through diversification of non-hydro renewable energy sources in developing countries

The increasing diversity of renewable energy sources in developing countries is receiving attention in discussions about the future of energy security and climate change. Given the strong relationship between energy demand and economic growth, this paper explores the factors that influence the diversification of non-hydro renewable energy sources across 117 developing countries covering more than 30 years. We contribute to the literature by using a new measure capturing diversification of non-hydro renewable energy sources and explore several estimation techniques in investigating determinants of diversification. Controlling for regional variations, results show that higher per capita income, implementation of policies promoting renewable energy, technological innovations and human capital improvement encourage diversification. In addition, the squared term of income was included to capture nonlinear effects. The results depict a U-shaped kind of relationship suggesting non-monotonic changes in renewable energy diversification in relation to increasing affluence. This implies that greater environmental concern in terms of energy use can be expected as countries developed. Other determinants suggest that high dependence on imported fuels and increasing world market price for crude oil will motivate developing countries to diversify non-hydro renewable energy sources. In contrast, the local abundance of hydropower and the availability of natural resources like oil impede diversification. Finally, we conclude that the progressive integration of renewable energy in developing countries energy mix can be hastened with environmental awareness, relevant policy, and favorable economic conditions.