1990 (December): B. E. (Mechanical Engineering): Assam Engineering College;
1991- 1992: Project Associate at Energy Science Centre, Assam Engineering College (Closely guided by Prof. A.K. Padmapati);
1992 - 2001: Junior Scientific Officer at Assam Science Technology and Environment Council, Guwahati, Assam, India;
1997: Advance training on Solar PV Design Engineering at Siemens Solar Industries, New Delhi and extensive tour in the USA;
2002 - 2007: Scientific Officer at Assam Energy Development Agency, Guwahati, India;
2007: M. Sc (Renewable Energy): Carl Von Ossietzky University, Oldenburg, Germany including six months of research work in the Fraunhofer Institute of Solar Energy Systems, Freiburg, Germany;
2007 - 2008: Manager - Energy Group at IT Power India PVT. Ltd, Pondicherry, India;
2008 - 2012: Head - Renewable Energy Solutions at IT Power India Pvt. Ltd, Gurgaon, India;
2010 - 20012: Director (Energy & Climate) at ICLEI - Local Government for Sustainability, South Asia Secretariat, New Delhi (Dual charge);
2012 - Present: Co-Founder & Managing Director at GSES India Sustainable Energy Pvt. Ltd., New Delhi; (www.gses.in)
Area of Work: Renewable Energy