Nowadays the renewable energy implementation and development is being discussed widely in Thailand with its 20-Year Energy Efficiency Development Plan (2011-2030) and additionally the 10-Year Alternative Energy Development Plan 2012-2021 (AEDP 2012-2021), which is targeting on increasing the share of renewable energy and alternative energy uses by 25 percent instead of fossil fuels within the next 10 years. To reach such an ambitious setting target, several measures must be established with data support from relevant feasibility studies. In this paper, a green city model - in which a 100 % renewable electricity supply is employed in the province - is proposed to be a feasibility study and Pathum Thani, a province in the vicinity of Bangkok, is selected as a case study. Different scenarios are discussed and analyzed for their possibilities. © 2014 Asian Institute of Technology.