Accepted and registered full papers will be published into Conference Proceedings, which will be indexed by Ei & Scopus. *Proceedings:ICEER 2018 July 23-27, 2018 | PragueEnergy Procedia, online soon ICEER 2017 July 17-20, 2017, ISEP (Polytechnic of Porto, Portugal)Energy Procedia, Volume 136, Pages 1–520 (October 2017) ISSN: 1876-6102, indexed by Scopus & EI Compendexonline: http://www.sciencedirect.com/journal/energy-procedia/vol/136/suppl/C ICEER 2016 September 9-11, 2016 | UPC, BarcelonaEnergy Procedia, Volume 107, Pages 1-398 (February 2017), indexed by Scopus & EI Compendexonline: http://www.sciencedirect.com/science/journal/18766102/107/supp/C *Submission:By online submission system: http://www.easychair.org/conferences/?conf=iceer2019