The Energy sector development was to expand the electricity supply coverage further, lower the tariff, and strengthen institutional mechanisms and management capacity by constructing and operating several hydropower plants such as (i) Kamchay Hydropower Plant with a total of 193.2 MW; Third Kirirom Hydropower Plant with capacity of 18 MW; Atai Hydropower Plant with capacity of 120 MW; Stung Russeychrum Krom Hydropower Plant with a capacity of 103 MW and a total capacity of 338 MW; and Coal-fired Power Plant in Preah Sihanouk with a capacity of 100 MW (RGC, 2014). Although significant progress has been made, the energy sector also faces challenges of electricity production from hydropower plants, which provides sufficient supply only in rainy season, while in dry season, power production is only 25%. Thus, there is a need to step up the implementation of the electrification strategy to realize the goal "by 2020, all villages in Cambodia will have access to electricity supplied by the national grid and other sources".