Tamil Nadu is one of India’s best states for rooftop solar. With 5.2 to 5.8 kWh/m²/day of solar irradiation, higher than Delhi, comparable to Rajasthan in many zones, Tamil Nadu homeowners generate more electricity per kW installed than most of the country. TANGEDCO (Tamil Nadu Generation and Distribution Corporation) is the state’s primary DISCOM (Distribution Company) and handles PM Suryaghar Muft Bijli Yojana applications for residential consumers across Chennai, Coimbatore, Madurai, Salem, Tirunelveli, and everywhere in between. This guide covers every step of the TANGEDCO PM Suryaghar process, the frequently misunderstood consumer number, TEDA’s role in the state, and our proprietary Tamil Nadu Solar ROI Map with city-specific payback estimates.
Key takeaway. PM Suryaghar subsidy for TANGEDCO Tamil Nadu consumers is ₹30,000 for 1 kW, ₹60,000 for 2 kW, and ₹78,000 for 3 kW and above from MNRE (Ministry of New and Renewable Energy). TANGEDCO feasibility approval takes 15 to 25 working days. Use the consumer (service connection) number exactly as printed on your bill, not the meter number. TEDA (Tamil Nadu Energy Development Agency) is the state’s renewable energy agency.
Tamil Nadu’s domestic tariff is slab-based: the low slabs are heavily subsidised and the rate climbs steeply for higher consumption. High-consumption households save the most from solar. Let’s break it all down.
What Is TANGEDCO and How Does It Handle PM Suryaghar?
TANGEDCO stands for Tamil Nadu Generation and Distribution Corporation Limited. Formed in 2010 from the former TNEB (Tamil Nadu Electricity Board), TANGEDCO runs power distribution across the entire state. Unlike Delhi, which splits service across BSES Rajdhani, BSES Yamuna, and TPDDL, Tamil Nadu has one primary distribution entity for residential consumers: TANGEDCO.
This means the PM Suryaghar application process in Tamil Nadu is relatively simple on the DISCOM identification side. Every Tamil Nadu homeowner applies through the same TANGEDCO channel on pmsuryaghar.gov.in. No need to figure out which of three DISCOMs serves your area.
TEDA: the Tamil Nadu Energy Development Agency, is the state’s renewable energy development agency. Under MNRE’s PM Surya Ghar guidelines, the DISCOM is the State Implementation Agency, and vendor registration in a state is handled by a nodal DISCOM or agency named by the state government, so check on the national portal which vendors are registered for Tamil Nadu. The TEDA website at teda.in carries state solar news.
For the national PM Suryaghar framework, our PM Suryaghar complete guide covers eligibility, subsidy amounts, and general process. This post focuses on what’s specific, and commonly misunderstood, in Tamil Nadu.
📘 Regulation note
TANGEDCO's net metering policy is governed by TNERC (Tamil Nadu Electricity Regulatory Commission) regulations. Capacity limits and the rate for exported units are set in TNERC's orders, so check the latest TNERC order for the current position before sizing your system.
Tamil Nadu Solar Numbers: Your Generation Baseline
Tamil Nadu’s solar irradiation is consistently strong. The southern districts, Tirunelveli, Thoothukudi, Virudhunagar, receive up to 5.8 kWh/m²/day, some of the highest in peninsular India. Even Chennai, with coastal humidity, averages 5.2 to 5.4 kWh/m²/day.
Tamil Nadu’s subsidised low slabs mean low consumers see limited solar savings. But households consuming 300+ units/month, where the per-unit tariff is much higher, find excellent economics. Air-conditioning users in Chennai and Coimbatore, consuming 400 to 600 units/month, typically cut their bills by 60 to 70% with a 3 kW system.
The TANGEDCO Consumer Number: Getting It Right
The most common mistake in Tamil Nadu PM Suryaghar applications is using the wrong number. A TANGEDCO bill carries more than one identifier:
| Number Type | Where to find it | Use For |
|---|---|---|
| Consumer (service connection) number | Printed on your bill and in TANGEDCO’s online services; may include region and section codes | PM Suryaghar portal, use this one |
| Meter Number | On the meter itself | Meter box only |
Enter the consumer number exactly as it appears on your bill, including any region or section codes, and never the meter number.
When you enter an incorrect identifier, the portal either rejects the entry or fetches the wrong account data, causing a name mismatch that takes 2 to 3 weeks to correct.
⚠️ Watch out
Before starting your PM Suryaghar application, locate the TANGEDCO consumer number on your latest bill. If the format is unclear, check TANGEDCO's online consumer services or visit your nearest TANGEDCO section office to confirm it.
PM Suryaghar TANGEDCO Application: Step-by-Step
The PM Suryaghar application in Tamil Nadu follows the national framework with TANGEDCO-specific timelines:
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Register on pmsuryaghar.gov.in: visit pmsuryaghar.gov.in, click “Apply for Rooftop Solar”, select State: Tamil Nadu, DISCOM: TANGEDCO. Enter your consumer number and complete OTP verification.
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Fill the application form: enter proposed system capacity (1 kW, 2 kW, or 3 kW+), roof area in square metres, and applicant details. The name must match your Aadhaar exactly.
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Upload documents: upload your Aadhaar, latest TANGEDCO bill, property document, and bank account proof. See the complete document list in §6.
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TANGEDCO feasibility review: TANGEDCO engineers check your transformer’s available capacity, your existing sanctioned load, and technical suitability. Tamil Nadu feasibility takes 15 to 25 working days: longer than Gujarat (7 to 12 days) due to TANGEDCO’s large consumer base. For systems up to 10 kW, the Electricity (Rights of Consumers) Rules deem the application technically feasible once the state regulator and DISCOM have put that into effect. Track status on the portal with your application ID.
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Receive feasibility approval: the portal updates to “Feasibility Approved.” Only now should you finalise your installer and schedule installation.
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Installation by a registered vendor: the installer must be registered (empanelled) on the PM Surya Ghar national portal for Tamil Nadu and must use DCR panels made from Indian-made cells. Unregistered vendors or non-DCR panels make the system ineligible for subsidy.
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Apply for net metering: after installation, submit the net meter application through the portal with your installer’s commissioning report.
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TANGEDCO inspection: TANGEDCO engineers inspect the installation within 15 to 25 working days. They verify panel capacity, inverter, earthing, DCDB and ACDB compliance, and cable routing.
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Net meter installation: upon successful inspection, TANGEDCO installs the bidirectional net metering meter and issues a commissioning certificate.
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Subsidy payment: MNRE’s guidelines say the subsidy is processed within 15 days of TANGEDCO’s approval on the portal. You redeem the e-token in your portal login and the money goes to the bank account (or loan account) on your application.
Curious about your Tamil Nadu solar savings? Use our free solar calculator, subsidy plus savings estimate in 60 seconds.
The Tamil Nadu Solar ROI Map
This is Heaven Green Energy’s proprietary framework for Tamil Nadu homeowners. Generic payback numbers mean little when Tamil Nadu’s irradiation and tariff vary by city and consumption band. The Tamil Nadu Solar ROI Map gives city-specific estimates from our installation data.
How to use the map: Find your city. Check your TANGEDCO bill for your average monthly consumption. Use the corresponding row to estimate monthly savings and payback years for a 3 kW post-subsidy system (net cost approximately ₹90,000–₹1,10,000 after ₹78,000 subsidy).
| City | Avg Irradiation (kWh/m²/day) | 3 kW Monthly Generation (kWh) | Applicable Tariff at 300+ units | Monthly Saving (3 kW) | Payback (post-subsidy) |
|---|---|---|---|---|---|
| Chennai | 5.2 to 5.4 | 390 to 405 | ₹4.50–₹5.50/kWh | ₹1,755–₹2,228 | 4 to 5 years |
| Coimbatore | 5.4 to 5.6 | 405 to 420 | ₹4.50–₹5.50/kWh | ₹1,823–₹2,310 | 4 to 5 years |
| Madurai | 5.5 to 5.7 | 413 to 428 | ₹4.50–₹5.50/kWh | ₹1,858–₹2,354 | 3.5 to 4.5 years |
| Salem | 5.3 to 5.5 | 398 to 413 | ₹4.50–₹5.50/kWh | ₹1,790–₹2,271 | 4 to 5 years |
| Tirunelveli | 5.6 to 5.8 | 420 to 435 | ₹4.50–₹5.50/kWh | ₹1,890–₹2,393 | 3.5 to 4.5 years |
| High-consumption household (any city, 600+ units/month) | , | , | ₹5.50–₹6.00/kWh | ₹2,228–₹2,520 | 3 to 4 years |
Source: Heaven Green Energy estimates from installation data; check your own bill for the slab rate you pay.
Key finding: Madurai and Tirunelveli consumers benefit most, high irradiation plus meaningful tariff at 300+ unit slabs gives the shortest payback. Chennai consumers with air-conditioning use (400 to 600 units/month) see near-identical savings to Madurai. For detailed ROI methodology, see our solar payback period explained guide.
💰 Real numbers
A family in Coimbatore consuming 450 units/month installs 3 kW. Generation: 415 kWh/month. At ₹5/kWh blended tariff, monthly saving is ₹2,075. Annual saving: ₹24,900. Net post-subsidy cost: ₹95,000. Payback: 3.8 years. Then 20+ more years of near-zero bills.
Documents Required for TANGEDCO PM Suryaghar
Prepare these before starting your online application. Any missing document causes a 2 to 3 week re-submission delay:
| Document | Details | Note |
|---|---|---|
| Aadhaar card | Self-attested copy | Name must exactly match TANGEDCO bill |
| Latest TANGEDCO electricity bill | Original or digital | Must clearly show the consumer number |
| Property document | Registered sale deed, patta, or society allotment letter | Patta accepted for revenue land in TN |
| Bank account details | Cancelled cheque or passbook copy | Aadhaar-seeded account recommended for DBT |
| Passport-size photograph | Recent JPEG/PNG | For portal upload |
| Mobile number | Aadhaar-registered mobile | For OTP verification |
Tamil Nadu property proof specifics: For urban areas, a registered sale deed is standard. For semi-urban and rural properties, a patta (revenue record) is accepted. For joint family properties, a certified extract from the sub-registrar or an affidavit from all co-owners is needed. Society allotment letters work for housing society flats.
The subsidy is paid to the bank account on your application, so it must be in your name, with a cancelled cheque or passbook as proof; Aadhaar seeding is a sensible precaution. Don’t leave this to the last step; bank-detail problems are a common reason for subsidy transfer delay.
Subsidy Amounts and TANGEDCO Tariff Context
PM Suryaghar subsidy amounts are uniform across India, funded by the central MNRE:
| System Size | PM Suryaghar Subsidy | Approx. Installed Cost (before subsidy) | Net Cost After Subsidy |
|---|---|---|---|
| 1 kW | ₹30,000 | ₹60,000–₹70,000 | ₹30,000–₹40,000 |
| 2 kW | ₹60,000 | ₹1,10,000–₹1,30,000 | ₹50,000–₹70,000 |
| 3 kW | ₹78,000 | ₹1,65,000–₹1,90,000 | ₹87,000–₹1,12,000 |
| 4 to 10 kW | ₹78,000 (capped) | ₹2,05,000–₹4,80,000 | ₹1,27,000–₹4,02,000 |
Source: Heaven Green Energy market estimates, 2026. MNRE’s own benchmark is ₹50,000/kW for the first 2 kW and ₹45,000 for the third kW.
We are not aware of a Tamil Nadu state top-up for residential rooftop solar on top of the central PM Suryaghar amount as of 2026; check with TANGEDCO or TEDA before you budget. The central subsidy is the primary financial benefit. Tamil Nadu does operate solar schemes for agricultural consumers under PM-KUSUM.
TANGEDCO’s subsidised domestic tariff structure means low-consumption consumers (under 200 units/month) see limited bill savings from solar, the tariff is already very low in their slab. For higher consumers in the upper slabs, solar is highly cost-effective. Check the solar subsidy landscape at the official MNRE site mnre.gov.in.
State Comparison: TANGEDCO vs Other DISCOMs
How does Tamil Nadu’s PM Suryaghar process compare with other major states?
| Feature | Tamil Nadu (TANGEDCO) | Gujarat (UGVCL/DGVCL) | Maharashtra (MSEDCL) | Delhi (BSES) |
|---|---|---|---|---|
| Feasibility timeline | 15 to 25 working days | 7 to 12 working days | 15 to 20 working days | 12 to 20 working days |
| Inspection timeline | 15 to 25 working days | 7 to 12 working days | 15 to 20 working days | 12 to 20 working days |
| State top-up subsidy | Check with TEDA | Check with GEDA | Check with MEDA | Check Delhi’s solar policy |
| Irradiation | 5.2 to 5.8 kWh/m²/day | 5.5 to 6.0 kWh/m²/day | 4.5 to 5.5 kWh/m²/day | 5.0 to 5.5 kWh/m²/day |
Source: MNRE, 2026; Heaven Green Energy application processing data.
Verdict. Tamil Nadu’s 15 to 25 day timeline is the main friction compared to Gujarat’s faster process. But Tamil Nadu’s irradiation advantage over Maharashtra and Delhi partially compensates. Get your consumer number correct and documents complete upfront, that single action saves the most time.
How Heaven Green Energy Helps Tamil Nadu Consumers
Heaven Green Energy is an MNRE-approved channel partner with 10,000+ installations across India. Our team handles PM Suryaghar applications end-to-end for Tamil Nadu homeowners, verifying your TANGEDCO consumer number, preparing documents, coordinating TANGEDCO inspection, and following up on DBT disbursement.
We understand Tamil Nadu vendor registration requirements and TANGEDCO’s specific inspection protocols. Our how to choose a solar installer guide explains what to check in any EPC company before signing a contract.
Our full service range:
- Residential Solar: 1 to 10 kW rooftop systems with PM Suryaghar subsidy handled end-to-end.
- Commercial Solar: 10 to 100 kW for offices, shops, and SMEs with TNERC net metering compliance.
- Solar Calculator: estimate your Tamil Nadu savings and subsidy in 60 seconds.
- About Heaven Green Energy: 10,000+ installations, MNRE empanelled, 25-city network.
Get a free site visit. Our engineer visits in 24 hours, sends a custom proposal in 48 hours, no cost, no obligation. Get your free quote →
Frequently Asked Questions
What is the TANGEDCO consumer number format for PM Suryaghar?
Use the consumer (service connection) number printed on your TANGEDCO bill, exactly as shown, including any region or section codes. Do not use the meter number. The PM Suryaghar portal needs the exact consumer number to link your application to your TANGEDCO account correctly.
How long does TANGEDCO PM Suryaghar approval take?
TANGEDCO feasibility review takes 15 to 25 working days after document submission, longer than Gujarat’s 7 to 12 days but similar to Maharashtra. After installation, TANGEDCO inspection takes another 15 to 25 working days. Net meter installation follows. Total timeline from application to subsidy DBT: approximately 90 to 120 days when documents are complete and error-free.
What is TEDA and why does it matter for Tamil Nadu solar?
TEDA stands for Tamil Nadu Energy Development Agency, the state’s renewable energy development agency. Under MNRE’s PM Surya Ghar guidelines, the DISCOM is the State Implementation Agency and vendors must be registered on the national portal for the state, so any installer doing PM Suryaghar work in Tamil Nadu must appear on the portal’s vendor list. Visit teda.in for TEDA’s state solar updates.
Does Tamil Nadu offer any additional state subsidy on top of PM Suryaghar?
We are not aware of a Tamil Nadu state-level cash subsidy on top of the central PM Suryaghar subsidy as of 2026; check with TANGEDCO or TEDA. The PM Suryaghar central subsidy (₹30,000 for 1 kW, ₹60,000 for 2 kW, ₹78,000 for 3 kW+) is the primary financial benefit for residential consumers. Tamil Nadu government operates separate solar schemes for agricultural consumers under PM-KUSUM.
Is PM Suryaghar available in all parts of Tamil Nadu?
Yes. PM Suryaghar is available across Tamil Nadu wherever TANGEDCO supplies electricity, which covers the vast majority of the state including Chennai, Coimbatore, Madurai, Salem, Tirunelveli, Trichy, Vellore, and rural areas. Very small pockets served by cooperative electric supply societies follow slightly different processes but are eligible under the same scheme.
What happens to my TANGEDCO bill after solar installation?
After net meter installation, your bill reflects net consumption, grid imports minus solar exports. In months where your solar system generates more than you consume, the surplus is credited as TNERC’s net metering rules allow, which is particularly valuable in peak-generation summer months when solar output is highest. Check the current TNERC order for how and when surplus credit is settled.
How do I track my TANGEDCO PM Suryaghar application status?
Log into pmsuryaghar.gov.in with your registered mobile number. The portal dashboard shows your current application stage. For escalation, raise a grievance on the portal (MNRE’s guidelines set a 30-day resolution period) or contact TANGEDCO’s section office in your area.
Can I apply for PM Suryaghar for a commercial or rental property in Tamil Nadu?
The PM Suryaghar residential subsidy applies to domestic LT electricity connections only. The application is made by the registered domestic consumer for that connection. Commercial properties are not eligible for PM Suryaghar residential subsidy, but commercial solar installations qualify for Accelerated Depreciation (AD) tax benefits and other TANGEDCO net metering provisions. See our commercial solar page for commercial options.