The Energy Systems Engineering program offers students, who wish to have an academic, research, industry or entrepreneurship based career, the opportunity to pursue the doctorate degree in energy systems engineering. It is important that the Ph.D. program graduates perceive the need for lifelong learning, are constantly improving themselves and are specialized engineers who have gained detailed knowledge of the related practices. For this reason, the primary aim of the Ph.D. in Energy Systems Engineering program is to train academics who can; conduct independent research on energy systems, comment on scientific events with a broad and deep perspective, continuously improve/train themselves to adapt to innovations in the field, and identify the steps needed to reveal new syntheses. Doctoral thesis will fulfill the aims of scientific innovation developing a new scientific method and/or applying a known method to a new field.