The United Nations Millennium Summit in 2000 produced 8 Millennium Development Goals (MDGs), designed as a blueprint to improve the lives of the world’s poorest and most vulnerable populations. The MDG target date came and passed at the end of 2015. After analyzing the successes and shortcomings of the MDGs, the UN followed with a set of 17 Sustainable Development Goals (SDGs)—agreed to by 193 countries, including Cambodia—to replace and expand the MDGs, as well as highlight additional areas of global concern. One of these SDGs is the new goal of bringing “affordable and clean energy” to all nations. In line with this objective, Cambodia’s government has embarked on an ambitious plan to provide reliable and inexpensive energy to its entire population. Cambodia has made great strides in meeting the energy demands of its population. But what remains uncertain are the environmental and social costs of the dams and fossil fuel plants being built. But it is hard to turn down the funding and support in Cambodia’s drive to develop its lagging infrastructure. This is a dilemma faced by the poorest nations—not just Cambodia—as they look for paths to improve the lives of their people. If Cambodia is to move up the economic ladder and attract more international business investment, it needs to continue improving energy access and stability. In rural areas this may mean looking at a combination of on-grid and off-grid solutions. It also needs to protect its valuable resources and look for more sustainable approaches to energy access.