1. SPIES 2019 was Technically Supported by Prince of Songkla University, Changmai University, Universiti Tenaga Nasional, University of Malaya, Tsinghua University and Curtin University. SPIES 2019 papers was published in IOP Conference Series: Earth and Environmental Science (EES) (ISSN: 1755-1315), which have been indexed in EI compendex and Scopus.2. SPIES 2020 was Technically Supported by Prince of Songkla University, Changmai Unversity, Universiti Tenaga Nasional, University of Malaya,Tsinghua University, KITAMI Institute of Technology, King Mongkut's University of Technology North Bangkok, Universite de Bretagne Occidentable and Shanghai University of Electric Power, China. SPIES 2020 was held successfully during September 15-18, 2020 online. Publication:Conference proceedings to be archived into IEEE Xplore Digital Library, and will be indexed by EI Compendex and Scopus.•Special Issue for IAS periodicals (IEEE Transactions on Industry Applications [Impact Factor 3.488]), and IEEE Industry Applications Magazine [Impact Factor 1.093]) – 20% papers will be recommended;•Special Issue for Sustainable Energy Technologies and Assessments’ Journal (Impact Factor 3.427).