Tamil Nadu’s innovative ‘Cool Roof’ initiative has gained international attention, earning a mention in a recent United Nations (UN) report as an effective urban strategy to combat climate change. The UN Environment Programme (UNEP) has highlighted the project for its potential to mitigate extreme urban heat. It is now exploring ways to replicate similar interventions in Delhi, India’s national capital.
Pilot Project in Chennai Shows Promising Results
The Environment and Climate Change Department of the Tamil Nadu government partnered with UNEP to implement this cool roof technology. The initiative was carried out under the Urban Heat Mitigation Project. The pilot was launched in a residential area in Perumbakkam, Chennai, chosen for its suitability as a demonstration site. According to UNEP’s recent note on passive cooling solutions, the project led to a significant indoor temperature drop of 5 to 8°C during peak summer months. It offers a cost-effective and energy-efficient cooling alternative.
High SRI Paint Delivers Cooling Benefits
Supriya Sahu, Secretary of the Environment, Climate Change and Forests Department, shared, “We selected the Lighthouse Project site in Perumbakkam for the pilot. We used Silka cool roof paint, which has a high Solar Reflective Index (SRI) of 102, and applied it to two residential blocks comprising 200 homes. This passive cooling solution yielded impressive temperature reductions and improved indoor comfort.”
Scaling Up for Broader Impact
Buoyed by the success of the pilot, the Tamil Nadu government now plans to scale up the Cool Roof initiative to other regions. This move aligns with the state’s broader climate adaptation and resilience strategy. It aims to address the growing impact of urban heat islands and promote sustainable, low-carbon living.
As reported by thehindubusinessline.com, Tamil Nadu is embracing innovative passive cooling solutions. The state sets a compelling example for other cities in India and around the world. It demonstrates that climate-responsive infrastructure can be both practical and impactful in the fight against rising urban temperatures.
