This book presents an approach for energy conservation by optimal sizing of grid connected AC irrigation pumps and a new methodology for sizing SPV powered DC irrigation pumps based on crop water requirements & local hydraulic field conditions. Sizing methodology includes crop water assessment, hydraulic head calculations and assessment of HP rating for irrigation pumps. A case study is taken up in the agriculture lands of Malaprabha Riverbed at Kittali village, Badami Tq, Bagalkot Dst, Karnataka, India (15.8351N-75.5394E) to identify energy conservation potential. Further, detailed analysis and energy conservation assessment is presented.