Rooftop solar is one of the smartest moves a homeowner can make right now, and three things explain why. Electricity bills keep rising, so the savings from solar grow every year. At the same time, the PM Surya Ghar Muft Bijli Yojana brings down what you pay at the end through subsidies. Financing has also become easier, so you don't need to pay the full cost at once. All of this has pushed solar into the mainstream.
But with that demand has come a flood of solar companies. Almost every one of them promises the lowest price, the fastest installation, and the biggest savings. On a sales call, most of them sound the same.
Here's the problem. You won't know which company was actually right until months after the solar system installation, when your electricity bill either drops the way you were promised, or barely moves at all. A solar system sits on your roof for close to 25 years. So, comparing companies properly, before you sign anything, matters a lot more than people realise. Here's how to actually do it.
How to Compare the Home Solar Panel Companies in India
To find the right solar panels for your home, it is crucial to keep certain things in mind to get the optimal results. You can check the following factors before saying yes to any solar company:
1. Start With Certification
Before anything else, check if a company only installs BIS (Bureau of Indian Standards)-certified panels that are listed under ALMM (Approved List of Models and Manufacturers). This isn't a small detail. ALMM listing is what makes your system eligible for the PM Surya Ghar Yojana. BIS certification confirms the panels meet India's official safety standards.
Ask for this in writing. A company actually using certified equipment will hand over the paperwork without any hesitation.
2. Compare Their Track Record
Ask each company how long they've been installing rooftop solar, and how many homes they've actually worked on. A company with more years has likely dealt with tricky roof shapes, local shading problems, and weather patterns specific to different parts of India. You can also check a company's number of installations directly on the PM Surya Ghar portal.
3. Check Whether They Assess Your Roof Before Quoting
A professional solar company sends someone to your home before giving you a final number. This visit should include a proper roof analysis, checking the roof's load-bearing capacity, taking exact measurements, mapping shadows across different seasons, and giving you a custom layout of where each panel will go.
If a company hands you a quote without ever seeing your roof, that number is a guess. It isn't a real assessment, and you shouldn't treat it like one.
4. Find Out Who Actually Installs the System
Many solar companies handle sales themselves, then hand off the physical installation to local solar companies. Ask directly whether the company uses its own trained Solar experts or outsources the job. This matters more than people expect. The equipment might be identical across two companies, but the quality of the installation rarely is.
5. Compare the Quotes Line by Line
A trustworthy company gives you an itemised quote, not just one vague total. It should break down the cost of panels, inverter, mounting structure, wiring, and labour separately. If a quote feels vague or incomplete, take that as a warning sign. It often means hidden costs later, or corners cut on equipment quality.
6. Look at the Panel Technology Being Offered
By 2026, newer panel types like Mono-PERC and N-Type TOPCon have become common. They offer better efficiency and degrade more slowly over time. Ask each company what kind of panels they're actually using, and whether that matches current technology. A company that stays updated usually cares more about your system's long-term performance than the one who’s simply selling whatever's cheapest to source.
7. Ask Who Handles the Subsidy and Net Metering Paperwork
Applying for the PM Surya Ghar Yojana and setting up net metering means dealing with government portals and your local DISCOM (Distribution Company). For a first-timer, this can get confusing fast. A good company manages this entire process for you, instead of leaving you to chase approvals on your own. This single factor can make the difference between a smooth experience and a stressful one while getting the solar system installed.
8. Look for a Written Performance Guarantee
This is where most companies fall short. Ask if there's a written commitment on how many units your system is expected to generate each year, and what happens if it falls short. Very few companies are willing to put this in writing.
A company called SolarSquare, now operating in various cities across India, backs their installations with a savings guarantee, offering compensation if the system generates fewer units than promised.
9. Check What After-Sales Support Actually Covers
A reliable solar company doesn't disappear after installation. Panels need occasional servicing and preventive system checks that catch small issues before they turn expensive. Ask exactly how many servicing visits are included in their plan, over what period, and what's actually covered under that plan.
A company offering a real, structured service contract is telling you something important. They expect to stay accountable for years after your system is commissioned, not just until the payment clears.
10. Read Beyond the Star Ratings
A high star rating alone doesn't tell you much. Look for detailed reviews instead, especially ones written months or years after installation. That's usually where the real differences between companies show up. You can also ask any company for a reference visit to a nearby customer's home, to get an honest sense of how they handle things once the sale is done.
How to Put This Comparison Together
Once you've checked all of this across two or three companies, line up their answers side by side.
● Who's certified and ALMM-listed?
● Who actually visited your roof?
● Who gave you a clear, itemised quote?
● Who's willing to put a performance guarantee in writing?
Among solar providers operating in India, “SolarSquare” is the #1 rooftop home solar company in India as per the PM Surya Ghar Muft Bijli Yojana portal. The company uses only BIS and ALMM-certified panels, and its mounting structures are engineered to withstand wind speeds of up to 170 km/hr. Their mounting structure, called “WindPro Mount™ 2.0”, is also IIT-Bombay approved. It also runs a structured solar servicing & maintenance program with remote monitoring, rather than treating installation as a one-time job.
Final Thoughts
Comparing solar companies in India was never about finding whoever quotes the lowest price or gives the smoothest sales pitch. It comes down to certified equipment, a proper roof assessment, transparent pricing, a written performance guarantee, and real after-sales support.
Those panels are going to sit on your roof for close to 25 years. Take the time to compare properly before you sign anything. It's really what separates a solar investment that pays off from one that quietly lets you down.
(The views, opinions, and claims in this article are solely those of the author’s and do not represent the editorial stance of The Assam Tribune)