# Chennai RWA installs Tamil Nadu’s largest rooftop solar system 2026-08-06T14:49:58+00:00 | Technology | Indian Opinion Desk Corroboration: 1 independent outlet Bollineni Hillside Phase I in Chennai began operating two 97 kW rooftop solar systems at its sewage treatment and water treatment units in late January 2026. The 1,295-home community has received the Tamil Nadu Solar Energy Developers Association award for the largest solar installation in the residential welfare association category in Tamil Nadu, The Hindu reports. The project cost Rs 1.1 crore to Rs 1.2 crore, with Rs 35 lakh received through the PM Surya Ghar scheme. The association’s net investment is about Rs 85 lakh. It estimates annual savings of Rs 25 lakh and expects to recover the cost in 3.5 to four years. The panels are expected to last 25 years. ## Coverage - thehindu.com Tags: Chennai, PM Surya Ghar, rooftop solar, RWAs, Tamil Nadu Canonical: https://indianopinion.org/chennai-rwa-installs-tamil-nadus-largest-rooftop-solar-system/ License: Summary and commentary (c) Indian Opinion, reusable with attribution. Facts belong to the linked sources. Cite: https://indianopinion.org/chennai-rwa-installs-tamil-nadus-largest-rooftop-solar-system/#story-in-brief Review state: restored archive article, accurate at time of publication, not offered to search indexes.