J K KaldellisProfessor John K. Kaldellis is Head of the Soft Energy Applications & Environmental Protection Laboratory (SEALAB) at the Technological Education Institute of Piraeus, Greece. Prof. Kaldellis has long and extensive academic experience in the dvelopment and application of renewable energy sources with an emphasis in wind-based renewable energy systems and many research interests in the field of hybrid wind energy systems. Read More Read Less