How to Find the Best Solar Installation Company for Your Home in India

With thousands of solar installers operating across India, picking the right one can feel overwhelming. The wrong choice costs money, voids warranties, and leaves you with a system that underperforms. This guide tells you exactly what to look for in 2026.

7 Signs of a Good Solar Installation Company

1. DISCOM Empanelled

Only DISCOM-empanelled installers can help you claim the PM Surya Ghar subsidy (₹30,000–₹78,000). Ask for their DISCOM registration number before signing anything. Every state's DISCOM maintains a list of approved vendors on their website.

2. Offers a Site Survey Before Quoting

A professional company will visit your home or request your roof photos, electricity bill, and address before giving a final quote. Anyone quoting without this information is guessing.

3. Itemised Written Quote

The quote must separately list: panels (brand, model, wattage), inverter (brand, model), mounting structure, wiring, labour, net metering charges. Never accept a single-number quote like "3 kW system: ₹1,80,000" with no breakdown.

4. Clear Panel and Inverter Brands

Reputable installers use Tier 1 panel brands — Waaree, Adani Solar, Vikram Solar, Tata Power Solar, Longi, Jinko. For inverters: Growatt, Solis, Goodwe, Delta, SMA. Avoid unknown Chinese brands with no Indian support.

5. Handles Net Metering End-to-End

The installer should submit your net metering application to the DISCOM, follow up, and inform you once the net meter is installed. If they say "you have to do it yourself," that is a red flag.

6. Verifiable Reviews and Track Record

Check their Google Maps listing. Look for companies with 20+ reviews and at least a 4.2 rating. Ask for 2–3 customer references in your city and call them. Ask if the system is performing as promised.

7. Post-Installation Support and AMC

A good company offers at least 1 year of free AMC (annual maintenance contract) after installation. After that, annual cleaning and checkup should cost ₹3,000–₹8,000.

Red Flags — Walk Away If You See These

  • Pressure to sign "today only" deals or cash discounts with no receipt
  • Unable to show previous installations in your city
  • No written warranty document for panels or inverter
  • Asking for 100% payment upfront
  • Not registered as a business (no GST number)
  • Promising exact electricity bill savings without seeing your bill

National vs Local Installer — Which Is Better?

Both have pros and cons:

  • National brands (Tata Power Solar, Adani, Luminous, etc.) — higher trust, standardised processes, but often more expensive and slower turnaround
  • Local verified installers — faster response, better local DISCOM knowledge, often better pricing, but quality varies more

The best approach: get one quote from a national brand and two from top-rated local installers in your city, then compare.

Find Verified Installers by City

GoSolarIndex lists verified solar installation companies across 53 cities with real ratings, phone numbers, and addresses:

Browse all residential solar installers or commercial solar installers on GoSolarIndex.

Questions to Ask Before Signing

  1. Are you DISCOM-empanelled in my area?
  2. Which panel brand and model will you use?
  3. What is the performance warranty on panels?
  4. Who handles the net metering application?
  5. What is the payment schedule (never pay 100% upfront)?
  6. What happens if the system underperforms in year 1?
  7. Do you provide monitoring app access?