Everything you need to know about the TSSPDCL and TSNPDCL net metering approval process — documents, timeline, common rejection reasons, and why you don't need to deal with it yourself.
When you install rooftop solar and connect it to the electricity grid, your system becomes part of a shared infrastructure. Excess solar power you generate flows back into the grid for your neighbours to use — and TSSPDCL or TSNPDCL credits you for it on your electricity bill. This is called net metering.
To enable net metering legally, DISCOM (Distribution Company) must approve your system, install a bidirectional meter, and issue a commissioning certificate. Without this, your system cannot legally export power to the grid, and you will not receive PM Surya Ghar subsidy — the subsidy is disbursed only after DISCOM confirms commissioning.
Installing solar without DISCOM approval is a legal violation and can result in disconnection of your electricity connection.
After you confirm your booking, we submit the net metering application to TSSPDCL or TSNPDCL on your behalf. This includes the proposed system single-line diagram, your electricity account details, and our TGREDCO vendor registration (TSRE260936).
A DISCOM engineer visits your premises to inspect the electrical panel capacity, existing meter, transformer load on your feeder, and roof suitability. They verify the proposed system size doesn't exceed your sanctioned load (typically 80–100% of sanctioned kW for residential). You don't need to be present — we coordinate the inspection.
DISCOM issues a feasibility approval letter authorising installation to proceed. This document specifies the approved system size (in kW) and any conditions. We proceed to schedule installation only after receiving this letter — installations without prior approval cannot be commissioned.
Our team installs the solar panels, inverter, mounting structure, and all wiring exactly as shown in the approved single-line diagram. Any deviation from the approved design requires a fresh application. Installation typically takes 1–3 days depending on system size.
After installation is complete, we photograph every component and submit the net meter connection application with an installation completion certificate, GPS-tagged photographs of panels and inverter, and the electrical test report.
A DISCOM team visits your premises and replaces the existing meter with a bidirectional net meter. This meter records both energy consumed from the grid (import) and solar energy fed into the grid (export). During this waiting period, your solar system is functional and reducing your electricity consumption — you just cannot earn export credits yet.
After net meter installation, DISCOM issues a Commissioning Certificate confirming your system is legally grid-connected. This is the final document needed to claim your PM Surya Ghar subsidy (up to ₹78,000) from the government portal. We submit the subsidy claim on your behalf immediately after receiving it.
| Document | Provided By | Details |
|---|---|---|
| Electricity Bill (last 3 months) | Homeowner | Shows consumer number, sanctioned load, and DISCOM details |
| Aadhaar Card | Homeowner | Identity proof of the electricity account holder |
| Property Ownership Proof | Homeowner | Sale deed / property tax receipt / society NOC for apartments |
| Passport Photo | Homeowner | 1–2 recent photos of the applicant |
| Bank Account Details | Homeowner | Cancelled cheque — for PM Surya Ghar subsidy disbursement |
| Single-Line Diagram | Sri Ishaan Solar | System design drawing showing panels, inverter, and grid connection |
| Vendor Empanelment Certificate | Sri Ishaan Solar | Our TGREDCO registration (TSRE260936) certifying we are an approved installer |
| Product Datasheets | Sri Ishaan Solar | Panel and inverter technical datasheets showing ALMM/MNRE approval |
| Installation Photographs | Sri Ishaan Solar | GPS-tagged photos of installed panels, inverter, meter, and earthing (after installation) |
| Electrical Test Report | Sri Ishaan Solar | Insulation resistance, earth continuity, and polarity test results |
DISCOM rules allow solar system size up to the sanctioned load on your electricity connection (typically 80–100%). If your sanctioned load is 5 kW and you apply for a 10 kW system, it will be rejected. We check your sanctioned load before designing the system and recommend the maximum permissible size. If needed, we advise you on applying for a sanctioned load enhancement first.
If too many solar systems are already connected to the transformer that serves your area, DISCOM may reject new applications. This is increasingly common in solar-dense areas like Kukatpally, Miyapur, and Manikonda. We check feeder capacity before submitting the application and advise alternatives if the feeder is full.
Missing documents, mismatched consumer numbers, or a single-line diagram that doesn't match the installed system are frequent causes of rejection or delay. We prepare and verify all documentation before submission to avoid this.
If the panels or inverter are not on the MNRE Approved List of Models and Manufacturers, DISCOM will reject the application. We source only ALMM-listed equipment on all installations.
| Scenario | Total Days (Booking to Commissioning) | Key Factor |
|---|---|---|
| Best Case | 30 days | DISCOM processes quickly, feeder has capacity, documents are perfect |
| Typical Case | 45 days | Standard processing time with normal queue at DISCOM |
| Worst Case | 75 days | High application volume, feeder capacity query, one resubmission needed |
From the first application to the commissioning certificate and subsidy claim — you don't visit a single government office. All you do is hand us your documents list items and we do the rest.
From DISCOM application to subsidy claim, Sri Ishaan Solar manages the full process. 8+ years experience, 100+ installations across Telangana, TGREDCO Reg. TSRE260936.
TGREDCO Reg. TSRE260936 · GSTIN 36AFXFS2132K1ZG · Serving all of Hyderabad & Telangana