Best Solar Company in Delhi NCR — A 10-Point Checklist Before You Hire

Finding the best solar company in Delhi is harder than it looks. Hundreds of installers advertise rooftop solar across Delhi NCR, and their quotes can differ by 30% or more for the same system. The right choice decides whether you still get 7,000 units a year from a 5kW system in 15 years, or whether you spend years chasing a subsidy that never arrives.

This guide gives you a practical 10-point checklist to compare installers. It works for homes, shops, factories and housing societies. Use it before you pay any advance.

What Makes the Best Solar Company in Delhi?

The best solar company in Delhi is not the one with the lowest price or the biggest advertisement. It is the one that is properly registered, quotes in writing, uses approved equipment, handles the DISCOM paperwork, and is still reachable five years after installation.

Solar is a 25-year asset. Most problems appear in the first year (paperwork and workmanship) and again after year five (inverter and service). A good installer is strong on both.

Check 1: Does the Best Solar Company in Delhi Have PM Surya Ghar Registration?

If you want the central subsidy, the installer must be a registered vendor on the PM Surya Ghar national portal. Installing through an unregistered vendor can forfeit the central subsidy entirely, and it cannot be fixed afterwards. Ask for the vendor registration details and verify them yourself.

Check 2: ALMM-Listed Panels, at the Model Level

Subsidised systems need panels from the MNRE ALMM list that meet the domestic content requirement. ALMM approval is granted per model, not per brand. A reputable installer will give you the exact model number and datasheet so you can check it. Our guide on the best solar panels in India explains what to look for.

Check 3: A Component-Wise Written Quote

A serious installer gives you a written breakup of panels, inverter, mounting structure, cables, protection equipment, installation, and net meter charges. If a company will only say “₹X per kW, all inclusive”, you cannot compare it with anything. Our 5kW price breakdown shows what a fair component list looks like.

Check 4: Inverter and Structure Quality

Panels get the attention, but the inverter and structure decide long-term performance. Ask for the inverter brand, model, warranty and local service centre. Ask what the structure is made of, its galvanisation thickness, and whether it is designed for Delhi’s summer storms.

Check 5: DISCOM Experience of the Best Solar Company in Delhi

Delhi has three DISCOMs: BSES Rajdhani, BSES Yamuna and Tata Power DDL. Each has its own portal habits and inspection style. Ask the company how many net-metering approvals it has completed with your DISCOM, and who will attend the inspection. Read our guide to net metering in Delhi so you know what a smooth application looks like.

Check 6: How the Best Solar Company in Delhi Handles Subsidy

Many installers promise the subsidy but leave the paperwork to you. The best solar company in Delhi handles portal registration, feasibility, photographs, commissioning and the claim. It should also warn you honestly about problems such as a sanctioned load lower than the system size, or a name mismatch between the bill, Aadhaar and bank account. For the rules, see solar subsidy in Delhi.

Check 7: Warranty Terms in Writing

You should receive the manufacturer warranties for panels (product and performance), the inverter, and the installer’s own workmanship warranty. Ask who handles a claim if the manufacturer is slow. A workmanship warranty from a company that disappears is worth nothing.

Check 8: After-Sales Service From the Best Solar Company in Delhi

Solar systems need little maintenance, but they are not zero maintenance. Dust and smog can cost a Delhi system 10–18% of its output between cleanings. Ask whether the company offers an annual maintenance contract, how often it visits, and how quickly it responds to a fault. See our solar panel maintenance guide for Delhi NCR for what proper upkeep involves.

Check 9: Local References You Can Visit or Call

Ask for two or three completed installations near your area, ideally 12 months old or more. Call the owners. Ask about the delivery timeline, whether the subsidy arrived, how the system performs in winter, and whether anyone answered when something went wrong. Online reviews help, but a direct call is better.

Check 10: A Fair Payment Schedule and Proper Invoice

A sensible schedule links payments to milestones: a small booking amount, a payment on material delivery, and the balance on commissioning. Avoid large advances before the DISCOM feasibility approval. Insist on a GST invoice that shows the GST split clearly, since the rate on solar panels and systems fell to 5% from 22 September 2025.

Comparison Table to Shortlist the Best Solar Company in Delhi

What to compare	Installer A	Installer B	Installer C
PM Surya Ghar registered
Panel brand and exact ALMM model
Inverter brand and warranty
Price per watt
Net meter and DISCOM liaison included
Workmanship warranty
AMC and response time

Fill this in for each quote. Gaps and vague answers tell you a lot.

Best Solar Company in Delhi for Homes, Businesses and Societies

The best solar company in Delhi for a 3kW home may not be the right fit for a 200kW factory roof. Homes need strong subsidy and net-metering support. Commercial buyers need engineering depth: transformer headroom, string inverter design, accelerated depreciation advice and monitoring. Housing societies need help with RWA resolutions and group net metering. Ask the company for examples in your category.

Why Customers Choose Solar Squad

Solar Squad is a Delhi-based EPC partner for solar design, supply and installation, with over 200 plants installed and more than 1,000 customers served across Delhi, Gurgaon and NCR. We work with brands such as Vikram Solar, Waaree, Adani Solar, Luminous and Havells, and we manage the subsidy and net-metering process from start to finish. You can check any claim above against our checklist, because it is the same one we expect customers to use.

Conclusion: Choosing the Best Solar Company in Delhi

The best solar company in Delhi is the one that passes all ten checks, not the one with the loudest offer. Verify portal registration, ALMM models, the component breakup, DISCOM experience, warranty and after-sales support before you pay. A few hours of checking can save you years of delay and thousands of rupees.

Get a Free Quote from Solar Squad

Want to see how we measure up? Contact Solar Squad for a free site visit, a written component-wise quote and a clear subsidy timeline. You can also call +91-88512 66347.

Official Sources and Further Reading

• PM Surya Ghar Muft Bijli Yojana — national portal
• MNRE — ALMM approved list
• Delhi Electricity Regulatory Commission

FAQs

How do I choose the best solar company in Delhi?

Check PM Surya Ghar vendor registration, ALMM model listing, a component-wise written quote, DISCOM experience, warranty terms, after-sales service and local references. Compare at least two or three quotes on a per-watt basis.

Is the cheapest solar quote in Delhi the best one?

Usually not. Very low quotes often mean non-ALMM panels, a light structure, thin cables, or exclusion of net metering and DISCOM work. Compare what is included, not only the total.

Should I pay an advance to a solar company?

A small booking amount is normal. Avoid large advances before DISCOM feasibility approval, and prefer a milestone-based payment schedule.

Do solar companies in Delhi handle the subsidy paperwork?

Good ones do. Ask whether the company registers you on the portal, files the feasibility and commissioning documents, and follows up on the subsidy claim until it reaches your bank account.

How long should installation take in Delhi?

The physical installation of a home system usually takes a few days. Feasibility approval, net metering and commissioning typically take around four to seven weeks in total.