Unravelling the past, present and future of solar policy in Vietnam Solar installs throughout 2020 took Vietnam’s cumulative capacity to more than 19.4GW. Image: JinkoSolar. Vietnam’s year-end solar installation figure of 9GW captured headlines in January 2021. But how did Vietnam grow its cumulative solar installations from a 2018 base of 106MWp, according to International Renewable Energy Agency (IRENA) Renewable Capacity Statistics, to year end 2020 cumulative PV capacity of over 19.4GWp? In a word, policy. The uncapped solar Feed-in Tariff (FIT) incentive policies to be more specific. Cumulative solar capacity of ASEAN nations. IRENA (2020), Renewable Energy Statistics 2020, EVN (2021) The original FIT1