Key Takeaways
- Getting solar permits and approvals in India means clearing your DISCOM, not a single government office. The DISCOM feasibility and net-metering sign-off is the real bottleneck.
- Grid-tied rooftop under a housing society or RWA usually needs a No Objection Certificate (NOC) before the DISCOM will even accept your application.
- Keep a clean paper trail: sanctioned load proof, latest bill, ID, roof photos, and the installer's list of approved equipment models.
- The national portal (PM Surya Ghar) now routes most residential applications, but your state DISCOM still runs the technical feasibility and meter installation.
- Budget realistically: approvals and net-meter installation often take longer than the physical install itself.
If you are planning a rooftop system, the panels are the easy part. The paperwork is where most homeowners get stuck. Understanding solar permits and approvals in India up front saves you weeks of back-and-forth with your electricity distribution company (DISCOM) and your local building authority. In this checklist I will walk you through exactly what documents you need, who signs off at each stage, how the DISCOM approval and net-metering steps actually work, and where people most often trip up. By the end you will know what to gather before you even call an installer, so your application moves instead of stalling.
Do you actually need a permit for rooftop solar?
For a small off-grid system that never touches the grid, formal approvals are minimal. But the moment you want to export power or claim net metering, you enter regulated territory. Any grid-connected rooftop system needs your DISCOM's technical feasibility approval and a net-metering agreement before commissioning.
Skipping this is a bad idea. An unapproved grid-tied system can lead to disconnection, denied subsidy, and safety liability if it back-feeds the grid during an outage. The approval exists to protect line workers and your own equipment, so treat it as part of the install, not an afterthought.
Tip: Confirm your sanctioned load first. Your solar capacity is usually capped at your sanctioned load (in kW). If you want a bigger system than your current connection allows, you may need a load-enhancement application before the solar file even starts.
The document checklist to gather first
Nine times out of ten, applications bounce because one document is missing or the name on the electricity bill does not match the applicant. Get these ready before you apply, and keep both physical and scanned copies.
- Latest electricity bill (shows consumer number and sanctioned load).
- Identity and address proof (Aadhaar, PAN, or similar).
- Proof of ownership of the premises, or an owner's consent letter if you are a tenant.
- Roof photographs and, for larger systems, a basic structural declaration.
- Society or RWA NOC if you live in an apartment or gated community.
- Installer details and the make/model of panels and inverter (must be from the DISCOM-approved list).
- Cancelled cheque or bank details if you are claiming subsidy.
Rooftop solar permits: the step-by-step process
The exact portal and forms vary by state, but the sequence is remarkably consistent across DISCOMs. Here is the flow I see on almost every residential job.
- Register the application on the national PM Surya Ghar portal or your state DISCOM portal, selecting your DISCOM and consumer number.
- Choose a registered vendor from the approved list and get a quote with approved equipment models.
- DISCOM technical feasibility review: they check your sanctioned load, transformer capacity, and connection type.
- Feasibility approval is issued, giving you the green light to install.
- Physical installation by the vendor, with proper earthing and a safe DC/AC layout.
- Apply for net metering and inspection; the DISCOM verifies the install matches the approved design.
- Net meter installation (a bidirectional meter) and final commissioning by the DISCOM.
- Subsidy disbursal (if applicable) after commissioning and bank verification.
The two DISCOM touchpoints, feasibility approval and net-meter installation, are where timelines slip. Everything in between is largely within your installer's control.
DISCOM approval for solar: what they actually check
The DISCOM's job is to confirm your rooftop system can safely connect without overloading the local network. They look at your sanctioned load versus proposed solar capacity, the health of the distribution transformer feeding you, and whether your equipment is on the approved list.
Many states also cap how much rooftop solar a single distribution transformer can host. If your feeder is already saturated with other rooftop installations, feasibility can be denied or delayed, even when your own paperwork is perfect. This is worth asking your DISCOM about early.
Once feasibility clears, the net-metering step is a separate approval. This is where your export arrangement is formalised, so it pairs directly with how billing works. If you are fuzzy on the export side, read our simple explainer on net metering in India before you sign the agreement.
| Stage | Who approves | Typical documents | Common delay cause |
|---|---|---|---|
| Application registration | Portal (national/state) | Bill, ID, consumer number | Name mismatch on bill |
| Technical feasibility | DISCOM engineer | Load details, roof photos | Transformer saturation |
| Society/RWA clearance | Housing society | NOC letter | Committee scheduling |
| Net metering | DISCOM | Install report, agreement | Meter stock shortage |
| Subsidy | DISCOM / nodal agency | Bank details, commissioning proof | Bank verification lag |
The society NOC hurdle (apartments and gated communities)
If you live in an apartment or a gated community, the society NOC is often the slowest single item. Committees meet infrequently, and members worry about shared-roof rights and roof waterproofing. Raise it early and bring a one-page proposal showing the roof area you need and how mounting will not damage the terrace.
For shared rooftops, some states allow group net metering or virtual net metering so multiple flats can benefit. The rules differ by state, so ask your DISCOM whether your society qualifies before you promise neighbours anything.
Safety and inspection: don't gloss over earthing
Warning: A grid-tied system that lacks proper earthing and surge protection can fail inspection and, worse, put you and utility workers at risk. DC wiring and mains connection must be done by a qualified electrician. Do not attempt the final grid tie-in yourself.
The DISCOM inspection before net-meter installation checks that the install matches the approved single-line diagram and meets basic electrical safety norms. Proper earthing, anti-islanding protection on the inverter, and surge protection are the usual sticking points. Get these right the first time and read our guide to earthing and surge protection for solar systems so nothing surprises the inspector.
The solar application process: how long does it really take?
Honestly, timelines vary widely by state and by how busy your DISCOM circle is. Feasibility can come back in days or drag for weeks. Net-meter installation depends on meter stock, which is a genuine bottleneck in some regions. Assume the approvals and metering will take longer than the physical install, and plan accordingly.
You can help yourself by keeping every document ready before you apply, responding to DISCOM queries the same day, and picking a vendor who files clean applications routinely. If subsidy matters to you, use only approved models and a registered vendor, because non-approved equipment disqualifies the subsidy even after commissioning. For an overview of how permits fit into the bigger design picture, see our complete guide to designing a home solar system.
Government scheme details and the residential portal live on the official site; the Ministry of New and Renewable Energy publishes current guidance at mnre.gov.in. Always cross-check scheme specifics there, since subsidy rates and portal steps are updated periodically. For our stance on accuracy, see our disclaimer.
Frequently Asked Questions
Do I need DISCOM approval for a small rooftop solar system?
Yes, if it connects to the grid. Any grid-tied rooftop system needs DISCOM technical feasibility approval and a net-metering agreement before commissioning. A fully off-grid system that never exports power does not need net-metering approval, though local wiring safety norms still apply.
What is the difference between feasibility approval and net metering?
Feasibility approval confirms your rooftop system can safely connect given your load and the local transformer. Net metering is a separate agreement that sets up bidirectional billing so you get credit for exported power. Feasibility comes first, then installation, then net-metering approval and meter installation.
Can a tenant install rooftop solar in India?
Usually yes, but you need the owner's written consent because the electricity connection and premises are in their name. For apartments, you also need a society NOC. Discuss ownership of the system and what happens if you move out before you invest in the install.
Why did my solar application get rejected or delayed?
The most common causes are a name mismatch on the electricity bill, a saturated distribution transformer that cannot host more rooftop solar, a missing society NOC, or equipment not on the DISCOM-approved list. Fixing the paperwork and using approved models usually clears the block.
Does my solar size have to match my sanctioned load?
In most states, rooftop solar capacity is capped at your sanctioned load. If you want a larger system, you may need to apply for a load enhancement first. Confirm your sanctioned load on your latest bill before finalising system size with your installer.
Bringing it together
The permits and approvals for rooftop solar in India are not complicated once you know the sequence: gather clean documents, register on the portal, clear DISCOM feasibility, install safely, and pass inspection before the net meter goes in. Get the paperwork right up front and the process moves; leave gaps and it stalls. When you are ready to plan capacity, budget, and layout around these approvals, start with our full guide to designing a home solar system and build from there.
