New Delhi, Feb 25 (ANI): Prime Minister Dr. Manmohan Singh on Tuesday dedicated the "Indira Paryavaran Bhawan" to the nation. The centrally air conditioned office building, which has a provision to accommodate about 600 officials of the Ministry of Environment and Forests, is located on Jorbagh Road and in proximity to other central government ministries and departments. Indira Paryavaran Bhawan is India's first on site Net Zero Building built by adoption of solar passive design and energy efficient building material.