GRIHA is India's national rating system for green buildings established in 2007. It evaluates a building's environmental performance over its lifecycle and provides standards for green buildings in India. GRIHA considers energy efficiency, water conservation, sustainable construction materials and practices, health and well-being of occupants, and other factors. It aims to minimize resource use and reduce waste generation. GRIHA certification is awarded based on a point system, with 50 points required for basic certification. There are various GRIHA variants for different building sizes and types, including for affordable housing and existing buildings. The rating process involves registration, documentation submission, site visits and evaluation.