Kalim Ullah received a Bachelor's and Master's Degree in Electrical Engineering from the University of Engineering and Technology, Peshawar, and CECOS University of IT and Emerging Sciences, Peshawar, Pakistan. He is a PhD scholar at the College of Electrical Engineering at Zhejiang University in Hanghzou, P.R China. He has been working in the Department of Electrical Engineering, University of Science and Technology, Bannu, Pakistan since 2011. His current position is a lecturer. Optimization, power system analysis, and renewable energy are some of his research interests.