The Department of Renewable Energy Engineering (earlier known as School of Renewable Energy Engineering/School of Energy Studies for Agriculture) was established in 1984 for effective planning and implementation of its programme of advanced training, research & development in the field of Renewable Energy. A number of research projects funded by various State, National and International organizations such as: PSEB, PEDA, PSCST, ICAR, MNRE, TERI, DST, FAO/UNDP, UGC, BARC etc. have been successfully completed. The mandate of the Department is to develop and disseminate integrated renewable technologies viz., solar, biogas and biofuel technologies. The current areas of research are : utilization of agricultural residues including paddy straw as source of energy through bioconversion and thermal conversion route, solar thermal energy for industrial and agricultural applications, slurry handling and value addition of bio-digested slurry, lignin-silica solubilization of paddy straw for increasing biogas production, biofuels generation and nutraceutical production from micro-algae. The Department has also initiated work on energy management in agriculture and agro-industries. The Department offers Ph.D. programme in Renewable Energy Engineering from year 2023-24 and earlier offered Ph.D. programme in Energy Science and Technology.