在現今的開發中國家，永續發展(SD)的概念正逐漸成型，並以此連結永續發展的三個關鍵元素：環境、社會與經濟，以發展各國人民的福祉和安定。永續發展的目標是做到滿足當代需求, 同時不損及後代滿足其需要之發展，此承諾可在能源的服務、生產、獲得和分配獲得擔保。而永續能源發展(SED)做為永續發展的解決方案，此概念涵蓋所有再生能源與技術，能提供一個划算又安全且對環境無害的能源供應方式。近年來再生能源因其對環境友善的特性而蓬勃發展，但另一方面它也需要足夠的技術去達成能源安全、增進效率與減緩溫室氣體排放的可行性。本論文將探討能源和社會、經濟與環境的關係。文中將以貝里斯為範例來闡述永續能源發展的概念，並藉由能源指標(EI)來評估全國的永續發展狀況。透過這些分析的結果將可對貝里斯的生態承載力、能源對環境的衝擊、經濟效益以及社會-政治公平性有所瞭解。 The concept of Sustainable Development (SD) resonates throughout developing countries in order to link its key elements: the environment, society and the economy for the development of man’s well-being and stability. The goal for SD is to meet the needs of the present without compromising the ability of future generations to meet their own needs; a guarantee that is promised by energy services, production, availability and distribution. Sustainable Energy Development (SED), as the answer, is locked conceptually in the inclusion of all renewable sources and technology that can produce economic and safe energy resources for all without impacting the environment. Renewable energy sources are encouraged because they are replenishable within a human lifetime and causes no long-term damage to the environment;adequate technologies, on the other hand, are essential for energy security, improving energy efficiency, reducing dependence on fossil fuel resources, and providing opportunities for mitigating the emission of greenhouse gases. This thesis aims at analyzing the interrelationship between energy and the three dimensions of SD: social, economic and the environment. It explores the concept of SED in Belize, presenting the best assessment for the Nation through the utilization of Energy Indicators (EI) as a tool to measure SED. The end result should establish an idea of Belize’s ecological carrying capacity, energy-related environmental impacts, economic efficiency and socio-political equity.