Tamil Nadu domestic consumers, enjoy ongoing major relief in 2026! The state government continues the popular subsidy scheme providing first 100 units free in every bi-monthly billing cycle for all household connections. Combined with PM Surya Ghar Muft Bijli Yojana solar rooftop incentives (central subsidy up to ₹78,000 + possible state boosts), low-usage families in Chennai, Coimbatore, Madurai, Tiruchirappalli, and Salem can achieve near-zero bills. Apply now to lock in monthly savings amid stable tariffs.
Know Complete Details
The free units scheme (bi-monthly billing) makes consumption up to 100 units completely free (zero energy + fixed charges for that slab). This applies automatically to all domestic services via TANGEDCO – no separate registration needed.
- Bi-monthly up to 100 units (50 units/month average): ₹0 bill
- Additional slabs: Progressive rates with subsidies
- Recent rule: Free benefit limited to one connection per property (multiple meters no longer get separate free units)
- Solar boost: Install rooftop under PM Surya Ghar for net metering – generate extra units credited to bill
- State incentive: ₹20,000 per kW (up to certain limit) under Chief Minister’s Solar Rooftop Scheme, on top of central CFA
Over 2 crore domestic consumers benefit from the free units subsidy annually.
How Much Benefit/Relief/Savings
Low consumption homes get full relief; solar adds more.
Example Bi-Monthly Savings (without solar):
| Bi-Monthly Consumption | Approx Unsubsidized Cost | Subsidized Bill | Savings |
|---|---|---|---|
| Up to 100 units | ₹600-800 | ₹0 | ₹600-800 |
| 101-200 units | ₹1,200-1,500 | ₹400-600 | ₹800+ |
| 201-400 units | ₹2,000+ | Normal slabs | Partial |
With 2-3 kW solar: Generate 250-400 units/month – offset higher usage for near-zero bills year-round.
Central Subsidy Table (PM Surya Ghar):
| System Size | Central Subsidy | Approx Net Cost |
|---|---|---|
| 1-2 kW | Up to ₹60,000 | ₹20,000-40,000 |
| 3+ kW | Up to ₹78,000 | ₹50,000-80,000 |
Plus state ₹20,000/kW incentive for eligible.
How It Affects You
- Perfect for small families or low-usage homes – covers lights, fans, fridge, TV easily.
- In hot cities like Chennai/Madurai: Solar helps during peak summer AC usage.
- Tenants: Eligible with owner consent or proof.
- Long-term solar: 25-year life, free power after payback (3-5 years).
Tips to Avoid Trouble – Application Details
- Free units: Auto-applied; check bill via TANGEDCO app/portal.
- For solar: Register on national portal pmsuryaghar.gov.in → Select TANGEDCO as DISCOM.
- Or use TANGEDCO USRP portal: https://www.tnebltd.gov.in/usrp/
- Upload Aadhaar, bill, roof photo; choose empanelled vendor.
- Net metering approval post-installation – excess units credited.
- Check eligibility/status on official sites below.
Have you checked your latest bill for free units? Planning solar installation in 2026 for extra savings?
Comment below and share your views!
Stay updated with us for all latest TANGEDCO tariffs, subsidies, and solar updates in 2026.
Official Website Links:
- TANGEDCO Official: https://www.tangedco.gov.in
- Solar Rooftop Portal (TANGEDCO): https://www.tnebltd.gov.in/usrp/
- PM Surya Ghar National Portal: https://pmsuryaghar.gov.in
- TNERC (Tariff Orders): https://tnerc.tn.gov.in
- Bill Payment/Status: https://www.tnebnet.org.in