It is the third year premier international conference organized by EEAAT, the Electrical Engineering Academic Association (Thailand). In comparison with the second iEECON last year, this year conference shows a rapid growth in terms of not only the number of papers and participants but also the debut of industry technology in the technical sessions. In addition, good quality papers published in the Proceedings of iEECON2015 will be submitted for inclusion in the abstract book of iEECON2015 and will be published in a periodic journal Advanced Materials Research (AMR), indexed by Elsevier: SCOPUS www.scopus.com and Ei Compendex (CPX) www.ei.org/. Cambridge Scientific Abstracts (CSA) www.csa.com, Chemical Abstracts (CA) www.cas.org, Google and Google Scholar google.com, ISI (ISTP, CPCI, Web of Science) www.isinet.com, Institution of Electrical Engineers (IEE) www.iee.org, etc., after each paper is reviewed and (if any) satisfactorily modified according to the reviewer comments.