Indira Paryavaran Bhavan in New Delhi, a project of Ministry of Environment and Forests, Govt of India at Aliganj, New Delhi is the first net zero energy building in the country constructed with a solar passive design and using energy-efficient building materials. Started in 2011, the building was inaugurated on Feb 25, 2014. The 31,488 sq m (plinth area) structure covers only 30% of the total area while a larger soft area with plantation and grass surrounds the building. The earthquake-resistant building has its own solar power plant, sewage treatment facility, geothermal heat exchange system and a robotic parking system for 330 cars in the basement. A design that allows for 75% of natural daylight, easy access for the differently-abled and energy saving chilled beam system of air-conditioning are among its other features. The building received GRIHA 5-Star rating in January 2014.