For years, Vietnam like many other developing countries relied on coal as the cheapest and easiest option to meet energy needs. However, technological progress and growing environmental concerns have made renewable energies more attractive. In 2017, solar energy played almost no part in Vietnam’s energy strategy. By the end of 2019, Vietnam surpassed Malaysia and Thailand to reach the largest installed capacity of solar panels in Southeast Asia. The country found itself with 5 gigawatts (GW) of photovoltaic projects, far exceeding the 1 GW by 2020 target. Among various segments, rooftop solar is fast gaining traction in the country.