Energy indirectly affects the productivity of the industrial and economic sectors, which is a major factor in any country's economic health. In the least developed Asian countries, most people still struggle to meet their basic energy needs. Without addressing inequality in the least developed Asian countries, a World Bank report states that universal access to renewable energy will remain unattainable. The answer is to switch to renewable energy sources, such as wind, solar, and biofuels. Among all renewable energy sources, photovoltaic (PV) technologies have shown to be a viable source of inexpensive, clean energy. This research delves into a thorough discussion of economic and geographical condition of Asian least developed countries. Consequently, in order to maintain the development of solar technology capacity, a thorough analysis of the renewable energy policies of the least developed Asian countries is required, along with a discussion of the policy's shortcomings. The location of solar energy potential in the least developed Asian nations—Bangladesh, Bhutan, Afghanistan, Myanmar, Republic of Yemen, Timor-Leste, Nepal, Cambodia, and Lao People's Democratic Republic—is provided in depth by this study.