Dear Scholars and Researchers, Warmest Greetings from CPESE2019! This is The 6th International Conference on Power and Energy Systems Engineering conference committee. We are very pleased to tell you that CPESE 2019 will be held in Okinawa, Japan during September 20-23, 2019. CPESE2019 is technically sponsored by University of the Ryukyus, JAPAN Publication: The registered and presented papers will be published into Energy Procedia (ISSN: 1876-6102), which is indexed by Ei Compendex, Scopus. Indexing History: Papers of CPESE2017, CPESE2016 were published in Engery Procedia and were indexed by Ei Compendex and Scopus! Submission: Please send your full paper to: cpese@zhconf.ac.cn Keynote Speaker: **The information will be announced soon, please visit: http://www.cpese.net/keynote.html Conference Venue: The information will be available through: http://www.cpese.net/venue.html Conference Schedule: September 20, 2019---Registration and Collecting Conference Materials September 21, 2019---Keynote Speeches and Oral & Poster Presentations September 22, 2019---Keynote Speeches and Oral & Poster Presentations September 23, 2019---Tour / Visit