Q.4 - GRIHA Rating System

4 6 Marks

Discuss the aim objective of GRIHA rating system guideline.

Answer: GRIHA Rating System - Aim and Objectives

GRIHA (Green Rating for Integrated Habitat Assessment) is India's national green building rating system developed by TERI (The Energy and Resources Institute) in collaboration with MNRE (Ministry of New and Renewable Energy). It evaluates the environmental performance of buildings throughout their lifecycle.

Aim of GRIHA

To minimize resource consumption and environmental impact of buildings while providing comfortable and healthy indoor environments. GRIHA aims to make green buildings mainstream in India by providing a rating tool suited to Indian climate, practices, and regulations.

Objectives of GRIHA

1. Energy Efficiency

Reduce energy consumption through efficient design and systems
Promote use of renewable energy (solar, wind)
Achieve 30-50% energy savings over conventional buildings

2. Water Conservation

Minimize water consumption through efficient fixtures
Promote rainwater harvesting and greywater recycling
Reduce dependence on municipal water supply

3. Sustainable Site Planning

Minimize disturbance to existing ecosystems
Reduce heat island effect
Promote public transport accessibility

4. Sustainable Materials

Use locally sourced, recycled, and low-embodied energy materials
Reduce construction waste
Promote use of fly ash, recycled steel, bamboo

5. Indoor Environmental Quality

Ensure adequate daylighting and ventilation
Maintain thermal and visual comfort
Use low-VOC materials for better air quality

Rating Levels

Rating	Points Required
1 Star	25-40
2 Star	41-55
3 Star	56-70
4 Star	71-85
5 Star	86-100

Key Features

India-specific: Designed for Indian climate, materials, and context
Lifecycle Approach: Covers design, construction, and operation
34 Criteria: Comprehensive assessment across multiple parameters
Mandatory for Central Govt: Buildings >5000 sq.m. must be GRIHA-rated

Conclusion

GRIHA aims to transform India's building sector toward sustainability by providing a comprehensive rating framework that addresses energy, water, materials, waste, and indoor environment. As India's official green building rating system, it plays a crucial role in reducing the environmental footprint of buildings, which account for 40% of energy consumption. GRIHA certification benefits building owners through reduced operating costs, higher property values, and regulatory incentives.

Sources: Module 3 Notes | GRIHA Council | MNRE