Rooftop solar for Chennai homes — TANGEDCO bill first

Chennai heat drives AC loads; coastal wind and salt air raise structure quality requirements. Free-unit / tariff rules also change how much a plant actually saves on the lowest slabs. Use the free home check before chasing a quote.

Central CFA (what you can plan on today)

PM Surya Ghar residential CFA is commonly ₹30,000 (1 kW), ₹60,000 (2 kW), and up to ₹78,000 for eligible 3 kW+ systems, paid as DBT after commissioning via pmsuryaghar.gov.in with your TANGEDCO service connection. Details: PM Surya Ghar guide.

Tamil Nadu state top-up — careful reading

Tamil Nadu has announced a rooftop solar subsidy scheme in convergence with PM Surya Ghar, with press coverage describing a combined household ceiling around ₹1 lakh. Detailed state guidelines (exact share, eligibility, process) may still be rolling out. Do not treat a flyer’s “extra ₹22,000 today” as locked bankable cash until TEDA / TANGEDCO / portal wording confirms it. Model your decision on central CFA first; treat state top-up as upside.

TANGEDCO net metering

Grid-tied rooftop in Chennai needs TANGEDCO feasibility and net metering. Timelines vary by circle. Empanelled vendors and ALMM / DCR-eligible equipment still apply for CFA. Cyclone-prone coastal mounting is an installer engineering job — websites cannot certify wind loads.

Who this is for

• Owner-occupied homes (or clear roof rights) on domestic TANGEDCO
• Bills high enough that net cost after CFA still pays back — not every free-power / low-slab home
• People who want bill maths before society or vendor pressure

Related

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