The issues of green energy and sustainable development are one of the most discussed and most important today in face of the global challenges, such as global warming, greenhouse emissions, degradation of the ecology etc. In this regard, green energy is obviously a necessary part of the energy policy of a country. Still, economic crises and instability have led to the necessity to form a sustainable economy; hence the crossing of the two mentioned policies leads to the necessity to figure out what sustainable green energy is. The issues of green energy are very important for the developing economies, which are highly limited in financial resources. The countries of Latin America are among the ones which face significant issues in this sphere. The article is devoted to the formulation of this concept and to the proof that sustainable energy development is individual for every country. The scope of the research is the Latin American region, within the years since 2000. The authors conducted a regression analysis of the GDPs of several countries, namely, Brazil, Argentina, Peru and Colombia and their green energy sectors, and formulated conclusions on sustainable energy sources in these countries. The key findings include the proof of sustainable green energy sources for every researched country and the strategies for the improvement of these countries’ renewable energy sector performance. The novelty of the article encompasses the methodology used and the concept of sustainable renewable energy.