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Last Reviewed: October 5, 2026 •
Next Review: April 2027
Understanding the Rooftop Solar Timeline in Tamil Nadu, Tamil Nadu solar installation timeline
The Tamil Nadu solar installation timeline runs from portal registration to subsidy credit in roughly 6-10 weeks. Knowing each stage, feasibility, installation, inspection, DBT, keeps your project on track.
PM Surya Ghar application lifecycle stages.
Rooftop Solar Milestones (45-60 Days Process)
Phase / Step
Activity Details
Average Duration
Day 1 - 7
Submit online application on the National Portal; TANGEDCO inspects transformer capacity.
7 Days
Day 8 - 10
Feasibility approval issued. Contract signing with empanelled vendor.
3 Days
Day 11 - 25
Material procurement (panels, inverters, structures). Site prep & physical installation.
15 Days
Day 26 - 32
Vendor submits Work Completion Report. Online request for net meter testing.
7 Days
Day 33 - 42
Joint physical inspection by TANGEDCO. Net meter installation and plant commissioning.
10 Days
Day 43 - 60
Submit bank details on portal. MNRE reviews documentation & releases subsidy via DBT.
18 Days
Standard Operating SLAs for TANGEDCO
Under the Tamil Nadu Right to Services Act, TANGEDCO has binding SLAs for solar integration:
Technical Feasibility Review: 15 working days from submission.
Joint Inspection and Meter Setup: 10 working days from Work Completion upload.
Commissioning Certificate Issuance: 3 working days from physical testing.
Your Solar Journey Continues
Keep reading the Tamil Nadu cluster to ensure a successful rooftop installation:
Official 2026 Consumer Rights & DISCOM Escalation Protocol in Tamil Nadu
Under the latest regulations notified by the Tamil Nadu Electricity Regulatory Commission (TNERC) and MNRE guidelines, consumers across Chennai, Coimbatore, Madurai, Tiruchirappalli, Salem and Tirunelveli are legally protected by strict Service Level Agreements (SLAs). If your rooftop solar net meter installation, feasibility inspection, or subsidy disbursement is delayed, follow this formal escalation hierarchy:
Escalation Level
Designated Authority
Mandated SLA Timeline
Action & Remedy
Level 1: Local Sub-Division
Assistant Engineer / Junior Engineer (TANGEDCO (Tamil Nadu Generation and Distribution Corporation Ltd), TANGEDCO)
3 Working Days
Submit written grievance ticket regarding net meter testing or portal document hold.
Level 2: Circle Superintending Engineer
Executive Engineer (Solar Renewable Cell)
7 Working Days
Formal grievance filing on DISCOM portal with application acknowledgement number.
Level 3: Regulatory Ombudsman
Consumer Grievance Redressal Forum (CGRF) under Tamil Nadu Electricity Regulatory Commission (TNERC)
15 Working Days
Binding legal hearing. Utility can be fined daily penalties for willful commissioning delays.
Mandatory Inspection Documents Checklist
When the DISCOM inspection team visits your premises for the final bi-directional meter synchronization, have these exact physical documents signed and organized in a physical file:
Joint Inspection Report (JIR): Signed by the homeowner and the empanelled solar engineer.
Factory Flash Test Report: Showing peak watt test results matching your panel serial numbers.
DCR Undertaking Stamp Paper: Affirming domestic solar cell content as mandated by MNRE.
Inverter Type Test Certificate: Confirming anti-islanding compliance (IS 16221 / IS 16169).
💡 Consumer Tip: Always keep a timestamped digital copy of your Work Completion Report (WCR) and joint inspection form. If your net meter is not installed within 15 days of successful plant inspection, your vendor can register a formal complaint on the PM Surya Ghar National Grievance Portal.
5. Week-by-Week Milestone Roadmap: From Registration to Commissioning in Tamil Nadu
Homeowners in Tamil Nadu can expect a complete turnaround of 25 to 40 days from initial portal submission to final net meter power synchronization. Here is the realistic chronological roadmap:
Time Window
Action Step
Homeowner Verification Checklist
Day 1 to 3
Portal Registration & Selection
Submit consumer number and Aadhaar; select an empanelled vendor from the official DISCOM directory.
Day 4 to 10
Feasibility & Agreement Signing
DISCOM issues technical feasibility approval; execute model consumer contract with milestone payment terms.
Day 11 to 20
On-Site Installation & Civil Work
Structure erection, module bolting, 3 chemical earth pits, inverter mounting, and DC/AC cabling.
Day 21 to 30
Joint Inspection & Net Meter
DISCOM field team verifies installation, tests anti-islanding disconnect, and installs bi-directional smart meter.
Day 31 to 60
Subsidy Direct Benefit Transfer
MNRE deposits ₹78,000 directly into your bank account via PFMS DBT gateway.
6. Proactive Escalation Tips for Stalled Applications
If your application gets delayed at the DISCOM sub-division office for more than 15 days, call the national portal helpline (15555) with your application ID. You can also visit your local DISCOM junior engineer (JE) office with your technical feasibility letter to fast-track net meter dispatch.
7. Tracking Digital Status Updates & DISCOM SMS Alerts in Tamil Nadu
Throughout your application cycle in Tamil Nadu, the national portal and your local power utility (TANGEDCO, TANGEDCO) send automated SMS and email notifications at each milestone. Homeowners can track real-time progress using their registered mobile number:
Status: 'Feasibility Approved': The DISCOM field office has verified that your neighborhood distribution transformer has sufficient capacity. Your vendor can now begin rooftop installation.
Status: 'Work Completion Submitted': Your vendor has uploaded photos of the panels, inverters, and three chemical earth pits. A DISCOM junior engineer (JE) is automatically assigned for site inspection.
Status: 'Net Meter Installed & Synchronized': The bi-directional meter is active and your official Commissioning Certificate is generated on the portal. Subsidy DBT disbursement triggers automatically.
If any status remains static for more than 10 working days, visit your local DISCOM sub-division office or raise a ticket on the national solar portal (pmsuryaghar.gov.in) referencing your application ID.
8. Expediting Net Meter Dispatch & Avoiding Store Delays in Tamil Nadu
If physical panel installation is complete but your bi-directional meter has not been dispatched from the utility testing lab after 15 days, take proactive action:
Request your empanelled vendor to provide the official DISCOM Work Completion Report (WCR) submission acknowledgment receipt number.
Visit the local sub-divisional Assistant Engineer (AE Metering) with your application printout to confirm meter allocation from the central zonal store.
Under Tamil Nadu regulatory standards, DISCOMs face statutory service compensation penalties if net meter energization exceeds 30 calendar days from WCR submission.
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