A solar panel warranty is only as valuable as your ability to claim it. Adani Solar offers one of the more detailed warranty structures in the Indian market — a 10-year product warranty backed by the manufacturer and a 25-year linear power output guarantee. But most buyers who receive a warranty card at installation have no idea what these warranties actually cover, what voids them, how to make a claim, or what compensation they can expect. This guide answers every one of those questions.
Key takeaway. Adani Solar panels carry a 10-year product warranty (covering manufacturing defects, delamination, junction box failure) and a 25-year linear power output warranty (guaranteeing minimum 90% output at Year 10 and 80.6% at Year 25). Claims are filed with Adani Solar directly using the panel serial number and warranty card. Heaven Green Energy is a certified Adani Solar channel partner and registers each client’s warranty at commissioning, making claims significantly easier.
Understanding your warranty before a problem arises — not after — is the difference between a resolved claim and a years-long dispute.
The Two Types of Adani Solar Warranty
Adani Solar panels come with two distinct warranty documents:
1. Product Warranty (10 years)
This covers manufacturing defects that cause the panel to fail or degrade abnormally. Specifically:
- Delamination of the encapsulant (EVA or POE layer)
- Junction box failure, moisture ingress, or connector failure
- Frame deformation or corrosion under normal conditions
- Backsheet cracking or delamination
- Cell microcracks from manufacturing
The 10-year product warranty means Adani Solar will replace or repair a defective panel at no charge, including shipping, during this period.
2. Linear Power Output Warranty (25 years)
This is the performance guarantee. It specifies the minimum output the panel must deliver at standard test conditions (STC: 1000 W/m², 25°C cell temperature, AM 1.5 spectrum):
- Year 1: Not less than 97.5% of rated output
- Year 2–25: Not less than 0.55% annual degradation
- At Year 10: Not less than 90% of rated output
- At Year 25: Not less than 80.6% of rated output
For a 545W panel, this means: at Year 25, the panel must produce at least 440W under STC conditions. If it produces less than 440W, Adani Solar must replace it or provide compensation.
According to IRENA’s 2024 solar module quality report, leading Indian manufacturers including Adani Solar have degradation rates of 0.45–0.55% per year in field conditions — actually better than the warranty guarantee, meaning real-world performance typically exceeds the warranty floor. The Adani Solar product catalogue and BIS certification portal can be used to verify that any Adani Solar panel you receive matches the manufacturer’s official specifications.
💡 Fast tip
Keep a copy of your inverter's monthly generation log from Year 1 onward. If you ever need to claim under the power output warranty, the generation history is the evidence that proves your panels are underperforming relative to the warranty guarantee.
The Degradation Guarantee: What 80.6% at Year 25 Actually Means
The 25-year output warranty is often misunderstood. Buyers sometimes think “80.6% at Year 25” means the panel produces 80.6% as much electricity as on Day 1. That is incorrect.
The 80.6% refers to 80.6% of the nameplate rated power at STC, not 80.6% of Day-1 actual output. Here is the distinction:
- Nameplate rating: 545W (what’s printed on the label — rated at STC conditions)
- Day-1 actual output: May be 545W or slightly higher (due to positive watt tolerance or LID stabilisation effects)
- Year 25 warranted minimum: 545W × 80.6% = 439.3W at STC
In real-world conditions, the Year 25 output also depends on your site’s irradiance, temperature, soiling, and shading — factors outside the warranty. The warranty only covers STC-condition performance.
What the linear degradation guarantee looks like as a table:
| Year | Minimum Output (% of Rated) | Minimum Watts (545W panel) |
|---|---|---|
| 1 | 97.5% | 531.4W |
| 5 | 95.3% | 519.4W |
| 10 | 90.0% | 490.5W |
| 15 | 87.3% | 475.8W |
| 20 | 84.5% | 461.0W |
| 25 | 80.6% | 439.3W |
What the Product Warranty Does and Does Not Cover
Understanding warranty exclusions is critical. Adani Solar’s product warranty covers manufacturing defects only. The following are not covered:
Not covered by either warranty:
- Physical damage from hail, lightning strike, storm, flood, or fire
- Damage from incorrect installation (wrong wiring, improper mounting angle, unauthorized modifications)
- Soiling, dirt buildup, or bird droppings reducing output — this is not a product defect
- Damage from grid overvoltage or installation-side electrical faults
- Damage caused by insects or animals
- Output loss due to shading from newly constructed structures
Warranty voiding conditions:
- Serial numbers removed, defaced, or altered
- Panel modified or tampered with after manufacture
- Installation not complying with Adani Solar’s installation guidelines
- Use in conditions outside specified operating range (temperature, voltage)
The specific exclusions are detailed in the warranty document issued with the panel. Always read the warranty card before installation, not after a failure occurs.
How to Make a Warranty Claim: Step by Step
If you believe your Adani Solar panel has a manufacturing defect or is underperforming relative to the output warranty, here is the claim process:
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Document the issue. Take clear photographs of the defective panel showing the fault (delamination, junction box damage, cell discolouration). If the issue is output-related, export a monthly generation report from your inverter monitoring portal. Our guide to solar generation monitoring explains how to extract these reports from major inverter brands.
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Locate your warranty card and serial numbers. You need the warranty card issued at installation and the serial numbers of the affected panels. Heaven Green Energy delivers the warranty card at commissioning with a full list of installed panel serial numbers.
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Contact Adani Solar customer service. Call 1800-572-2364 (toll-free) or email customercare@adanisolar.com. Provide: your name, installation address, panel model and serial number, purchase date, and a description of the defect with photographs.
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Adani Solar inspection. For physical defects, Adani Solar typically deputes a technical inspection team within 7–15 working days. For output warranty claims, they may request independent lab testing of the panel.
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Resolution. If the claim is valid, Adani Solar provides replacement panels (same or equivalent model). They cover shipping to your location. Installation of replacement panels is typically arranged through the original installer or a nearby authorised service centre.
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Escalation. If your claim is denied and you believe it’s wrongful, escalate to Adani Solar’s regional service manager. In Gujarat, Heaven Green Energy also assists our clients with escalations through our channel partner relationship.
⚠️ Watch out
The output warranty claim requires proof that the underperformance is a panel issue, not a soiling or shading issue. Before filing a claim, clean all panels thoroughly and verify there is no new shading (from trees, buildings, or new construction) that could explain the output drop.
Adani Solar Warranty vs. Other Major Panel Brands
| Brand | Product Warranty | Output Warranty | Year 25 Min Output | Claim Ease (India) |
|---|---|---|---|---|
| Adani Solar | 10 years | 25 years | 80.6% | High (India-based service) |
| Waaree | 10 years | 25 years | 80.7% | High (India-based) |
| Vikram Solar | 10 years | 25 years | 80.68% | High (India-based) |
| Tata Power Solar | 10 years | 25 years | 80.6% | High (India-based) |
| LONGi Solar | 12 years | 25 years | 82% | Medium (China-based claim) |
| Jinko Solar | 12 years | 30 years | 87.4% | Medium (China-based claim) |
Source: Manufacturer warranty documents, 2025–26 editions.
Indian manufacturers have an advantage for warranty claims: service is faster, replacement panels are available from India warehouse stock, and disputes can be escalated through Indian consumer protection mechanisms via the National Consumer Helpline. Chinese panel warranties require international claim processes that are slower and harder to enforce from India.
For a full comparison of panel brands available in India, see our solar brands Gujarat comparison guide.
The Warranty Registration Failure: Why Many Panels Are Not Covered
Here is a fact that surprises most solar buyers: panel warranties are valid only if the warranty is registered with the manufacturer at the time of installation. If a panel is installed without warranty registration, many manufacturers can legitimately refuse a claim on the grounds that they cannot verify the panel’s installation date or that the serial number was used fraudulently.
Adani Solar’s warranty registration requires:
- Panel serial number
- Installation date
- Installer name and contact
- End customer name and installation address
Registration can be done via the Adani Solar Verify App or through the channel partner portal. At Heaven Green Energy, warranty registration is part of our standard commissioning checklist — we register every panel’s warranty within 48 hours of commissioning.
If you installed Adani Solar panels through another installer and have not registered your warranty, do it now at adanisolar.com/warranty-registration.
Pros and Cons of Adani Solar’s Warranty Structure
- Backed by Adani Group's balance sheet — among India's strongest guarantors
- QR-based digital warranty registration — easy to verify and claim
- India-based service team — faster inspection and replacement
- Industry-standard 25-year output guarantee with 80.6% floor
- Product warranty of 10 years (some Chinese brands offer 12–15 years)
- Output warranty floor (80.6% at 25 years) is lower than premium brands (87%+)
- Warranty void if installation is non-compliant — requires certified installer
How Heaven Green Energy Supports Adani Solar Warranty Claims
As a certified Adani Solar channel partner, Heaven Green Energy provides three layers of warranty support:
- Registration at commissioning — every panel serial number is registered through our channel partner portal within 48 hours of commissioning.
- Claim filing assistance — for clients who need to file a claim, our team prepares the documentation package and liaises with Adani Solar’s regional service manager.
- Output monitoring — our clients have access to inverter monitoring portals that track generation against expected values, making output warranty claims data-driven rather than anecdotal.
- Solar modules page — Adani Solar panels available through Heaven Green Energy.
- Solar panel warranty explained — general warranty guide for all brands.
- How to verify genuine Adani panels — authentication before installation.
- Contact our team — get Adani Solar installation with guaranteed warranty registration.
Ready to install? We handle Adani Solar warranty registration, MNRE documentation, and net metering — start to finish. Call +91 63904 05060 or request a callback.
Frequently Asked Questions
What is covered under Adani Solar’s 10-year product warranty?
The 10-year product warranty covers manufacturing defects including: delamination of the encapsulant, junction box failure or moisture ingress, frame deformation under normal conditions, backsheet cracking, and cell defects from manufacturing. It does not cover physical damage from external causes (hail, storm, lightning), soiling, incorrect installation, or electrical faults from the installation side.
What does the 25-year power output warranty guarantee?
The 25-year linear output warranty guarantees that at Year 1, the panel produces at least 97.5% of rated output; at Year 10, at least 90%; and at Year 25, at least 80.6% of the nameplate wattage — all measured under Standard Test Conditions (1000 W/m², 25°C). Maximum annual degradation is capped at 0.55% per year from Year 2 onward.
How do I file an Adani Solar warranty claim in India?
Call Adani Solar at 1800-572-2364 or email customercare@adanisolar.com with your warranty card number, panel serial number, installation date, and photographs of the defect. Adani Solar will depute a technical inspection team within 7–15 working days. If the claim is valid, replacement panels are provided and Heaven Green Energy (as your channel partner) can facilitate the replacement installation.
Does my Adani Solar warranty transfer if I sell my home?
Yes. The Adani Solar panel warranty is tied to the panel serial number, not the individual owner’s name. If you sell your home, the panels and their warranty transfer to the new owner. Provide the new owner with the original warranty cards and the QR verification documentation so they can continue to access warranty support.
What voids the Adani Solar warranty?
The warranty is voided by: (1) Physical damage from external causes (not a manufacturing defect), (2) Modification or tampering with the panel after manufacture, (3) Removing or altering the serial number or BIS marking, (4) Installation by an uncertified installer not following Adani Solar’s installation guidelines, (5) Use outside the specified operating parameters (voltage, temperature, humidity range).
How long does an Adani Solar warranty claim take to resolve?
Technical inspection: 7–15 working days after claim filing. Claim decision: typically within 30 days of inspection. Replacement panel delivery: depends on stock availability and location — typically 15–30 days after claim approval. Total resolution from filing to replacement: approximately 45–90 days.
What if Adani Solar stops operating — is the 25-year warranty still valid?
The 25-year warranty is backed by Adani Green Energy Limited’s balance sheet. As a large publicly traded company, the risk of complete failure is lower than for smaller manufacturers. However, for added protection, ensure your warranty card is in your possession (not just with the installer) and registered digitally through the Adani Solar app — these records are cloud-stored and accessible even if the installer changes.
