In this paper, we present results of an empirical investigation on correlation and transition path of food and energy self-sufficiency by reference group of countries (e.g., OECD, OPEC, HDI developed countries, HDI developing countries, transition countries). The results suggest the importance of controlling country specific effects self-sufficiency, our study found that correlation between them varies across reference groups. A catch-up story of HDI developing countries and transition countries is identified when the 'level' of food and energy security is concerned. However, the same is found to be not true for the 'rate' of food and energy security. This suggests that synergy effects between food and energy security is not fully utilized during the sample period.