SPRERI organized “Open House” 15th February, 2020 to bring awareness on various aspects of the renewable energy technologies. During the visit students were divided in small groups. The visit started with poster presentation on renewable energy technologies. Then they demonstrated various working models on how solar energy can be utilized to generate heat or electrical energy. Students also got to know how the olden gas is converted to new modern ways to get the complete combustion. A fan was attached at the end of hole through which the wood leads to complete combustion. And at last we got to know how the waste water can be purified with the help of algae.