Vidulka National Energy Symposium was held for the sixth consecutive year on 20thNovember 2015 from 9.00 a.m. to 5.00 p.m. at the BMICH, Colombo. This symposium was objected at enhancing the sustainable energy related R&D in the country and aligning the research activities of different organizations related to the subject to the national sustainable energy development agenda focally coordinated by Sustainable Energy Authority. Research papers submitted from researchers of universities and research institutions in the country are presented in the symposium and those are evaluated based on the merits of particular researches in context of the sustainable energy development agenda and other important scientific and allied aspects.