TANGEDCO Solar Net Metering & Per Unit Rate Tamil Nadu (2026)

⚠️ Disclaimer: Tariff rates and export prices are indicative as of June 2026 and subject to change per SERC/CERC orders. Always verify current rates at tangedco.gov.in before making financial decisions. Rates change annually.

TANGEDCO Electricity Tariff Slabs 2026

The following domestic tariff slabs apply to household consumers under TANGEDCO (Tamil Nadu Generation and Distribution Corporation). Commercial and industrial tariffs differ — check tangedco.gov.in for those categories.

Monthly Consumption Slab	Rate per Unit (Indicative)
0–100 units (domestic LT-IA)	₹0 (free)
101–200 units	₹1.50/unit
201–500 units	₹3.00/unit
Above 500 units	₹5.00/unit

TANGEDCO Solar Net Metering — Export Rate

Under net metering, TANGEDCO consumers with rooftop solar systems can export surplus electricity to the grid and receive credit at the applicable tariff rate. The solar export price for TANGEDCO is approximately ₹2.26/unit for net metering; gross metering may differ (TNERC order), as per the latest order from the state electricity regulatory commission.

Net metering settlement in Tamil Nadu is done monthly — excess export units are credited at the export rate, and any net import is billed at the prevailing import tariff. Annual settlement of any remaining export credit varies by DISCOM policy.

How Solar Saves Money Under TANGEDCO Tariffs

For a household consuming 300–400 units per month in TANGEDCO area, a 3 kW solar system can offset 300–360 units per month (25 kWh/day average). At current TANGEDCO tariffs, this typically saves ₹1,500–₹3,500/month on the electricity bill, depending on consumption pattern and time of generation.

Use our solar cost calculator and ROI calculator to estimate your exact savings based on your monthly bill.

PM Surya Ghar Subsidy for TANGEDCO Consumers

Residential consumers in TANGEDCO areas are eligible for PM Surya Ghar Muft Bijli Yojana subsidy: ₹78,000 central (PM Surya Ghar). Tamil Nadu state: check TEDA for state-specific incentives. To avail the subsidy:

Apply at pmsuryaghar.gov.in
Select an MNRE-empanelled installer from your DISCOM area
Complete installation; installer files net metering application with TANGEDCO
After DISCOM inspection and net meter installation, subsidy is credited to your bank account

Serving customers in Chennai, Coimbatore, Madurai, Trichy, Salem, Tirunelveli, Vellore, Erode and surrounding districts.

🌟 Connect with Verified Solar Installers in Your City

Get 3 free quotes from MNRE-empanelled solar installers registered with TANGEDCO.

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Documents for TANGEDCO Net Metering Application

Last 3 months electricity bill (showing TANGEDCO consumer number)
Load sanction / connection letter
Solar system single-line diagram (SLD) — signed by licensed electrical engineer
Inverter test certificate (IEC 61727 / IS 16221)
Solar panel IEC certificate (IEC 61215, IEC 61730)
MNRE-empanelled installer's electrical contractor licence copy
GST invoice for solar system
Geo-tagged site photographs
ID proof of electricity consumer

See our complete DISCOM net metering documentation guide for the full state-wise checklist.

Frequently Asked Questions

What is the TANGEDCO per unit electricity rate in 2026?

TANGEDCO domestic tariff 2026: First 100 units are free for domestic consumers. 101–200 units: ₹1.50/unit; 201–500 units: ₹3.00/unit; above 500 units: ₹5.00/unit. Tamil Nadu's first-100-units-free policy applies to households whose total consumption is 100 units or less in a month. If consumption exceeds 100 units, all units (including the first 100) are billed at the applicable slab rate — the free benefit lapses. This billing mechanism means high-consuming households (200+ units/month) gain the most from solar in Tamil Nadu. Verify at tangedco.gov.in.

What is the TANGEDCO solar net metering export rate?

TANGEDCO pays approximately ₹2.26 per unit for solar export under net metering (TNERC tariff order). Note: because Tamil Nadu gives the first 100 units free, solar mainly helps customers consuming above 100 units — those in the 200–500+ unit range benefit most from rooftop solar in Tamil Nadu.

How to apply for TANGEDCO solar rooftop net metering?

Visit tangedco.gov.in → Consumer Services → Solar Rooftop. Required documents: TANGEDCO service connection number, last electricity bill, solar SLD, inverter/panel IEC certificates, installer MNRE empanelment, and GST invoice. Tamil Nadu also processes applications via the PM Surya Ghar portal (pmsuryaghar.gov.in). Processing typically 30–60 days.

Is net metering available for TANGEDCO commercial consumers?

Yes. TANGEDCO provides net metering for commercial and LT industrial consumers under TNERC regulations. Tamil Nadu has been one of India's progressive states for renewable energy. The commercial net metering export rate may differ from residential — verify at tangedco.gov.in.

What is the maximum rooftop solar system size under TANGEDCO net metering?

Under TANGEDCO's net metering policy, residential systems up to 10 kW and commercial/LT systems up to 500 kW are eligible for net metering. Larger systems require a gross metering or PPA arrangement. Verify current limits at tangedco.gov.in.

Does Tamil Nadu offer state solar incentives for TANGEDCO consumers?

Tamil Nadu has the Tamil Nadu Energy Development Agency (TEDA) managing state solar programmes. TEDA periodically offers state subsidies and incentives on top of the central PM Surya Ghar scheme. Check teda.in for current Tamil Nadu-specific solar incentives for TANGEDCO consumers.