The International Renewable Energy Congress (IREC) provides a forum for researchers and practitioners around the world on recent developments in the fields of renewable energy. The congress consists of keynotes, oral sessions and poster presentations. Considered as a catalyst for research works, the IREC led in its fifth edition (IREC’2014) to the selection of 30% among presented papers for possible publication in partner journals. The sixth edition of the IREC (IREC’2015) will be held on March 24-26, 2015 in Sousse, Tunisia. Authors from academia as well as industry working within the scope of the congress subjects are invited to submit their papers. Submissions will be peer reviewed by our International Program Committee on the basis of full manuscripts. Acceptance will be based on quality, originality and relevance. Papers should be formatted according to the congress template and uploaded through the congress Website. They should be written in English and limited to six pages. Contributions should be original and not published elsewhere or submitted for publication during the review period.