DISCOM Approval Process for Rooftop Solar: Step by Step
Getting your rooftop solar system officially connected to the grid requires navigating your local DISCOM's (Distribution Company's) approval process — a step that can feel bureaucratic and confusing if you don't know what to expect. Here's a clear, step-by-step walkthrough of how this typically works.
Why DISCOM Approval Is Necessary
Your DISCOM approval process exists to ensure your solar installation meets safety and technical standards before it's connected to the shared electrical grid — protecting both your own system and the broader grid infrastructure, as well as utility workers who may need to safely work on grid equipment during outages or maintenance. This isn't optional paperwork; it's a genuine technical safety requirement, and it's also the process through which your net meter (the device that makes bill savings possible) actually gets installed.
Most experienced installers handle the bulk of this DISCOM coordination on your behalf as part of their standard service, submitting the required technical documentation and liaising directly with the DISCOM's renewable energy or net metering department — but understanding the process yourself helps you track progress, ask informed questions, and recognise if something seems to be taking unusually long.
The Typical Approval Sequence
Step 1 — Feasibility application: Before installation begins, your installer (or you, through the PM Surya Ghar portal for residential systems) submits an application for feasibility approval, providing details of your electricity connection, proposed system capacity, and site details. The DISCOM reviews this against your sanctioned load and local grid capacity in your area, and issues a feasibility approval before physical installation work proceeds.
Step 2 — Installation: With feasibility approved, your installer carries out the actual physical installation — panels, inverter, mounting structure, and all associated electrical work — following relevant safety standards, including proper earthing and the specific technical requirements (like anti-islanding protection in the inverter, which automatically disconnects the system from the grid during an outage for safety) that DISCOMs typically mandate.
Step 3 — Inspection application: Once installation is physically complete, your installer submits an inspection request to the DISCOM, along with technical documentation confirming the installation meets required standards — this typically includes details of the specific equipment installed (matching what was approved in the feasibility stage) and often photographic or technical documentation of the completed work.
Step 4 — Site inspection: A DISCOM representative visits the site to physically verify the installation matches submitted documentation and meets safety standards — checking earthing, wiring quality, inverter certification, and overall installation compliance. This inspection typically happens within 1-3 weeks of the request being submitted, though timelines vary by DISCOM workload and location.
Step 5 — Net meter installation: Following successful inspection, the DISCOM installs (or authorises replacement of) your bi-directional net meter, which is the device that actually enables the net metering billing arrangement. From this point, your system is officially "commissioned" and connected to the grid under net metering.
Step 6 — Subsidy disbursement (for eligible residential systems): For systems under the PM Surya Ghar scheme, successful net meter commissioning triggers the final step of subsidy disbursement — typically credited to your registered bank account within 30 to 45 days of commissioning, assuming all documentation and bank details are correctly submitted on the portal.
How Net Metering Works
Net metering is the billing arrangement that makes rooftop solar financially worthwhile for most Indian households and businesses. Once your solar system is installed, the DISCOM replaces your regular meter with a bi-directional net meter that can measure electricity flowing both ways — the power you draw from the grid, and the surplus solar power you export back to it.
During the day, your solar panels generate electricity that first powers whatever appliances are running in your home or business. Any extra power your panels produce beyond what you're using gets exported to the grid, and the net meter records this as a credit. In the evening or on cloudy days, when your panels aren't generating enough, you draw power back from the grid as usual. At the end of the billing cycle, you're only charged for the net units consumed — total units drawn from the grid minus total units exported to it.
This means the grid effectively acts as a free "battery" for your solar system during the day, and you only pay the DISCOM for the shortfall. For most homes with a well-sized rooftop system, this can bring monthly electricity bills down by 70–90%, and in some cases reduce them to the fixed minimum charge only.
What Is the PM Surya Ghar Muft Bijli Yojana?
Launched by the Government of India in February 2024, the PM Surya Ghar Muft Bijli Yojana is the country's flagship scheme for residential rooftop solar. Its goal is to get solar panels onto one crore (10 million) homes, and it does this by offering a direct subsidy — called Central Financial Assistance (CFA) — straight into the homeowner's bank account after installation, rather than routing it through the installer.
Under the scheme, households can get a subsidy of ₹30,000 per kW for the first 2 kW of capacity, and ₹18,000 per kW for the next 1 kW (i.e., the 2–3 kW slab), capped at a maximum of ₹78,000 for systems of 3 kW or larger. A household installing a 3 kW system, for example, can expect to receive close to ₹78,000 back from the government, substantially reducing the net cost of going solar.
To apply, homeowners register on the national portal (pmsuryaghar.gov.in), select their state and electricity distribution company (DISCOM), and choose an empanelled vendor to carry out the installation. Net metering is arranged through the DISCOM once installation is complete and inspected, after which the subsidy is credited directly to the applicant's bank account — usually within 30 to 45 days of a successful net-meter installation.
Documents and Application Process
Applying for solar subsidy in India, whether under PM Surya Ghar for residential rooftops or PM-KUSUM for agricultural applications, generally requires a similar set of documents: proof of identity (Aadhaar card), proof of address, a recent electricity bill showing your consumer/connection number, proof of property ownership or a no-objection certificate if you're a tenant, and bank account details (for the subsidy to be credited directly).
The typical process starts with online registration on the relevant government portal, followed by selecting your state, DISCOM, and an empanelled installer. The installer conducts a site survey, submits a technical feasibility report to the DISCOM, and — once approved — carries out the installation. After installation, the DISCOM inspects the site and installs the net meter, following which the subsidy amount is disbursed directly to the applicant's registered bank account, typically within 30 to 45 days of the net meter going live.
How to Choose the Right Solar Installer
The quality of your solar installation depends heavily on who installs it, not just what equipment you buy. When evaluating an EPC (Engineering, Procurement and Construction) company, start by checking whether they're empanelled with your state's renewable energy agency and DISCOM — this is a mandatory requirement to be eligible for government subsidy under schemes like PM Surya Ghar and PM-KUSUM.
Ask to see examples of their completed installations in your area, and if possible, speak to a couple of their past customers about the after-sales experience — how they handled warranty claims, whether the system's actual output matched what was promised, and how quickly they responded to service requests. A trustworthy installer will always conduct a proper site visit before quoting, checking your roof's shading, orientation, structural strength, and your actual electricity consumption pattern, rather than quoting a one-size-fits-all package over the phone.
Finally, insist on a clear, itemised quotation that separately lists the panel brand and wattage, inverter brand and capacity, mounting structure type, cabling and balance-of-system components, and installation charges — along with the warranty terms for each component (panels typically carry a 25-year performance warranty, inverters 5–10 years). Avoid installers who are vague about brands or bundle everything into a single opaque number.
Why Solar Makes Sense in India
India receives an average of 300 sunny days a year and among the highest solar irradiance levels in the world, which is precisely why the country has made solar power a cornerstone of its energy policy. For homeowners and businesses, this translates into a straightforward proposition: install a solar system once, and it keeps generating free electricity from sunlight for the next 25 years or more, dramatically cutting down what you pay to the grid.
Rising electricity tariffs, frequent hikes by state electricity boards, and the volatility of diesel prices for backup power have made solar an increasingly obvious financial decision, not just an environmental one. Combined with central and state government subsidies, the payback period on a typical residential or commercial rooftop solar system in India today ranges between 3 to 6 years, after which the electricity generated is effectively free for the remaining life of the system.
Beyond the financial case, solar also insulates households and businesses from unplanned power cuts, voltage fluctuations, and the uncertainty of grid supply in many semi-urban and rural parts of the country — a benefit that's often just as valuable as the money saved.
Cost and Payback Period
The cost of a rooftop solar system in India varies with system size, panel and inverter brand, roof type, and installation complexity, but as a rough benchmark, a good-quality on-grid residential system typically costs between ₹50,000 and ₹65,000 per kW before subsidy, using Tier-1, DCR-compliant components. After applying the government subsidy under PM Surya Ghar (up to ₹78,000 for a 3 kW system), the net out-of-pocket cost drops meaningfully.
Payback period — the time it takes for your electricity bill savings to equal your net investment — usually works out to between 3 and 6 years for most residential and commercial systems in India, depending on your local electricity tariff, how much of your solar generation you self-consume versus export, and how well the system is sized to your actual usage pattern. After the payback period, the electricity generated is essentially free for the remaining 18–22 years of the panel's rated life, making solar one of the few home investments that pays for itself and then keeps paying dividends.
Frequently Asked Questions
How long does the entire DISCOM approval process typically take from start to finish?
This varies by state and DISCOM, but a reasonable expectation for the full process — from feasibility application through to net meter commissioning — is typically 6 to 10 weeks, assuming no documentation issues or unusual scheduling delays.
What's the most common cause of delays in this process?
Incomplete or incorrect documentation is the most frequent cause of delays, followed by scheduling constraints on the DISCOM's inspection team, particularly in areas with high solar application volume. Working with an experienced installer who submits complete, accurate documentation the first time significantly reduces this risk.
Can I use my solar system before the DISCOM inspection and net meter installation are complete?
Technically the panels can generate power once physically installed, but the system shouldn't be connected to feed power into the grid until officially commissioned with net metering — your installer will typically ensure the system operates safely within your own premises during this interim period without improperly exporting to the grid before approval.
What happens if the DISCOM inspection finds an issue with the installation?
The DISCOM will typically specify what needs correction, and your installer addresses the identified issue before requesting a follow-up inspection — this is one reason working with an experienced, DISCOM-empanelled installer matters, since they're familiar with exactly what standards the inspection checks for and generally get installations right the first time.
Do I need to be personally present during the DISCOM inspection?
This varies by DISCOM and specific circumstances, but it's generally advisable to be available or reachable during the scheduled inspection window, even if your installer is primarily managing the technical interaction with the inspector.
Final Thoughts
While the DISCOM approval process involves several distinct steps, it's a well-established, routine procedure that experienced installers navigate regularly — your main role as the homeowner is largely to ensure your own documentation (identity, address, bank details) is accurate and promptly provided when needed, letting your installer handle the technical coordination with the DISCOM.