How to Identify Fake and Cheap Solar Panels?

With the rise in solar demand in India, a flood of solar companies promising the lowest price, fastest installation, and biggest savings have emerged. The truth is, most of them sound identical on a sales call. The real differences only show up months after installation, when your electricity bill either drops the way it was promised, or barely moves at all.

The quickest way to identify a fake or cheap solar panel is to check three things:

• Price: A TOPCon panel with domestic content (DCR) costs about ₹21 to ₹24 per watt. A non-DCR TOPCon panel costs about ₹18 per watt. If your installer is offering you solar panels far below market rate for that wattage, you may be compromising on the grade or quality. An offer far below that usually means a lower grade, and lower grade means lower efficiency.
• Certifications: You must look for the BIS (Bureau of Indian Standards) mark or MNRE (Ministry of New and Renewable Energy) ALMM (Approved List of Models and Manufacturers) listing. Panels for the PM Surya Ghar subsidy must also be DCR.
• Paperwork: If the datasheet and serial number don’t trace back to a real manufacturer, you’re likely looking at a fake or substandard panel.

Most homeowners in India opt for cheap PV panels simply because they don’t know what to look for before installing solar, and that gap is exactly what low-quality sellers rely on. The good news is that a few checks, done before you sign anything, can save you years of regret.

In this blog, we’ll walk you through why fake and cheap solar panels are a real problem in India, what actually makes a panel low-quality, the warning signs to watch for, how to verify a panel is genuine, and what’s actually at stake if you get this wrong.

What is a fake solar panel?

A fake solar panel is sold under a copied brand name, a made-up datasheet, or an invented serial number. It looks real but delivers less power than its rating, wears out faster, and cannot be traced back to a genuine manufacturer. You can check the basic differences between genuine and fake panels below:

Please note: The per-watt TOPCon solar panel price listed above is an indicative range and can change based on the number of modules you order and the brand you choose.

What Makes a Solar Panel “Fake” or “Cheap”?

Most fake or cheap solar panels may look normal to the naked eye. However, you can notice the quality of solar panels; at least they should not be damaged or look poor-quality. Not every inexpensive solar panel is fake, and not every fake panel is cheap on paper. But a few patterns show up again and again in low-price solar panel deals that end up disappointing buyers:

• Mislabelled wattage: A panel marketed as 350W might actually output 280-300W in real conditions. You won’t notice this until your generation numbers fall short.
• Refurbished or second-hand cells: Some sellers provide second-hand solar panels. They repackage used or damaged cells inside a new-looking frame and sell them as fresh stock.
• Substandard materials: Thin glass, a weak backsheet, or a poor-quality junction box all cut costs, but they also cut the panel’s working life. You must keep an eye on whether the quality is up to the mark.
• No genuine certification: Missing or forged BIS certification, or no listing under MNRE’s Approved List of Models and Manufacturers (ALMM), is one of the clearest signs of a cheap photovoltaic panel cutting corners.
• Panels absent from the ALMM list: As per the Ministry of New and Renewable Energy’s official ALMM page, only listed models and manufacturers are approved for government-linked and subsidy-eligible solar installations in India. A panel that isn’t on this list should raise questions immediately.

How to Identify Fake or Cheap Solar Panels: Warning Signs

If your solar installation company is offering inexpensive solar panels with no certifications or paperwork, that’s usually a sign they’re handing you fake solar panels. Before you make up your mind to go for rooftop solar, there are a few crucial factors you must check first.

• A price that’s too good to be true: If a quote for cheap solar power is significantly below what other installers charge for the same wattage and brand, ask why. A reliable company provides a quote with transparent pricing, rather than giving you a vague total.

Along with the panel price, you must also check the cost of components such as the inverter, mounting structure, wiring, and more in the quotation. If you feel the quote is vague, that is a sign that the company is not transparent and may charge you extra or compromise on the solar panel quality.

In addition, make sure the solar company you are opting for uses DCR (Domestic Content Requirement) panels. These panels are manufactured in India. Under PM Surya Ghar Muft Bijli Yojana, you are only eligible if you have a solar system with DCR panels.

• No BIS mark or ALMM listing: Before anything else, you must confirm that a solar installer only installs BIS (Bureau of Indian Standards)-certified panels that are listed under ALMM (Approved List of Models and Manufacturers). ALMM listing is required for your system to qualify for the PM Surya Ghar subsidy, and BIS certification confirms the panels meet India’s official safety standards.

Ask for this in writing. A company that’s genuinely using certified equipment will have no trouble sharing documentation.

• Vague documentation: A genuine panel comes with a proper datasheet, a visible serial number, and clear manufacturer details. If you feel any of these details are hard to pin down, that’s a red flag. The company must have a specific serial number and datasheet that actually match their production records for solar panels.
• Warranty that doesn’t trace back to a real manufacturer: A warranty card is only as good as the company standing behind it. If you can’t verify the manufacturer directly, the warranty is close to worthless. Ask if there’s a written commitment on how many units your system is expected to generate each year, and what happens if it doesn’t.

At SolarSquare, we offer a solar panel performance warranty of ~28-30 years for TOPCon solar panels, and offer compensation of ₹8 if the rooftop solar panels generate fewer units than promised.

•  Buying through unregistered local vendors: A cheap solar power system sold by an unauthorised local dealer, rather than an authorised installer, often skips quality checks that would normally catch a fake panel. You must ensure the installer company conducts solar panel inspections to maintain the quality of solar panels.
• Physical red flags: If you notice uneven cell alignment, visible bubbles or discolouration under the glass, and a flimsy frame, these are all signs of a poorly manufactured panel, even before you check the paperwork. At SolarSquare, we provide an EL (Electroluminescence) image through which you can easily detect any internal cracks, micro-cracks, or any other manufacturing defects.

Why Fake and Cheap Solar Panels Are a Real Problem in India

India’s solar market has grown fast, and growth of this scale always attracts shortcuts. Due to the rising solar popularity, unregistered and unbranded manufacturers have entered the space, selling cheap solar panels with no certifications. This is why fake and cheap solar panels are emerging in India.

You’ll find panels sold with mislabelled wattage, tested cells reused and repackaged as new, and paperwork that looks official but doesn’t hold up under a real check. Someone selling a cheap PV panel isn’t always lying about the price. They’re often lying about what’s actually inside the panel.

The other factor that gives this seller the courage to sell fake or cheap solar panels is unawareness among homeowners. Most homeowners don’t have the tools or the technical background to test a solar cell’s actual output or check material quality.

This is exactly why it’s crucial who is installing your solar. At SolarSquare:

•  We only source panels from MNRE ALMM-listed, BIS-certified manufacturers. There’s no ambiguity about where your panels come from or whether they meet the government’s quality benchmark.
• We’re upfront about the brand, wattage, and certification of every panel before installation even begins, so you’re never guessing what’s actually going on your roof.
• Our solar experts handle procurement and installation directly, rather than routing the job through unauthorised local vendors who might cut corners to save cost.
•  And because a panel’s real performance only shows up after installation, we back every system with a written savings guarantee, so your actual output is tracked and guaranteed, not just promised on a brochure.
• Our after-sales support also stays with you well beyond installation day, and any genuine manufacturer warranty is honoured in full, not treated as fine print.

How Much Should a Genuine Solar Panel Actually Cost?

The solar panel price depends mainly on its brand, wattage, order quantity, and whether it is a DCR or non-DCR module. A low-price solar panel isn’t automatically fake, and a high price doesn’t automatically mean genuine.

The DCR (Domestic Content Requirement) TOPCon panel price* is between ₹21 and ₹24 per watt, and non-DCR TOPCon panels are ~ ₹18 per watt.

If the solar quote is far below for the same wattage and panel type, that gap has to come from somewhere. It usually comes from thinner materials, untested cells, or skipped certification. When you compare quotes, always ask for the per-watt price and the exact panel model, not just a lump-sum number for the whole system. This makes it much easier to spot when someone’s cheap solar quote doesn’t add up.

Please note: The per-watt TOPCon solar panel price listed above is an indicative range and can change based on the number of modules you order and the brand you choose.

Risks of Installing Fake or Cheap Solar Panels

Choosing inexpensive solar panels without checking their authenticity carries real, long-term costs, not just a slightly lower output:

• Poor ROI: Lower actual power output than promised means your payback period stretches out far longer than what you were quoted.
• Faster degradation: Genuine panels are built to perform reliably for 25 years. Cheap or fake ones often degrade much faster, sometimes within a few years.
• No real warranty support: When something fails, you may find no traceable manufacturer is standing behind the paperwork you were handed.
• Safety risks: Poor-quality junction boxes and substandard wiring increase the risk of overheating, short circuits, and, in rare cases, fire.
• Subsidy disqualification: If you’re applying for the PM Surya Ghar Muft Bijli Yojana subsidy, your panels must be ALMM-listed at the time of commissioning. Non-compliant panels can mean your entire subsidy application gets rejected.

Conclusion

The worst part of any fake or cheap solar panel is that it rarely looks fake. It looks like any other panel sitting on a roof. What actually gives it away is the paperwork, the certification, and the seller standing behind it.

So, the real protection isn’t becoming an expert at spotting every technical flaw yourself. It’s choosing a certified, accountable installer who’s already done that homework for you. Cheap solar power might look attractive on a quote, but genuine, certified solar is what actually protects your investment for the next 25 years.

Ready for solar that’s certified, verified, and backed by a real guarantee? Book a free consultation with SolarSquare and go solar without second-guessing what’s on your roof.

Frequently Asked Questions

How can I check if my solar panel is BIS certified?

You need to look for the BIS mark on the panel’s nameplate label, along with a licence number. You can verify this licence number directly through the manufacturer or the Bureau of Indian Standards to confirm it’s genuine and active.

What is MNRE’s ALMM list and why does it matter?

ALMM stands for Approved List of Models and Manufacturers, maintained by India’s Ministry of New and Renewable Energy. Only panels on this list are approved for government-subsidised and grid-connected installations, making it one of the strongest quality signals available.

Can fake solar panels affect my government subsidy eligibility?

Yes. Under the PM Surya Ghar Muft Bijli Yojana, your panels must be ALMM-listed at the time your system is commissioned. Non-compliant or fake panels can lead to your entire subsidy application being rejected.

Do cheap solar panels really perform worse?

Cheap solar panels often use lower-grade materials and untested cells. This lowers real-world output and shortens the panel’s usable life compared to certified, properly manufactured panels.

How long should a genuine solar panel last?

A genuine, well-manufactured solar panel is typically built to perform reliably for around ~25 years, with a gradual, predictable drop in output over that period. Fake or low-quality panels rarely hold up anywhere close to this.

Is it safe to buy solar panels from local, unbranded vendors?

No, you must avoid buying solar panels from local, unbranded vendors. Unregistered local vendors often skip certification checks, and if something goes wrong, there’s usually no traceable manufacturer or warranty to fall back on. Buying through an authorised, certified installer is a safer route.