Institute of Physics and Power Engineering (full name: I.I. Leypunsky Institute of Physics and Power Engineering, Russian: Государственный научный центр Российской Федерации Физико-энергетический институт, ГНЦ РФ-ФЭИ; IPPE) is a research and development institute in the field of nuclear technology located in Obninsk, Russia. It is a subsidiary of Rosatom.