He is a Green energy consultant to UN. He has done many national, international assignments in renewable energy and energy efficiency. Initiated 36 patents, many of these are commercialized. He has presented 22 papers in international conferences, 12 in journals. He promoted solar cooking, especially for midday meal schemes for schools. He is Involved in thousands of tree plantation through Suman Foundation. Through his NGO PRINCE, he has done entrepreneurship training in renewable energy to more than 500 people from India and abroad.