Who will honour your 25-year solar warranty?
India’s top 10 solar manufacturers, ranked not by capacity but by the probability that the company is still solvent, listed and answering the phone in 2051.
The short answer
A solar warranty is a company’s liability, not a government guarantee. If the manufacturer dissolves, you become an unsecured creditor — last in the queue behind banks. MNRE’s warranty SOP of 6 May 2026 now requires manufacturers to keep warranty obligations alive through restructuring, merger or dissolution, but it creates an obligation, not a fund. So the only real protection is buying from a company likely to still exist.
Since ALMM List-II took effect on 1 June 2026, roughly a third of India’s small and medium module manufacturers have stopped production. That makes “will this company survive?” a live question, not a theoretical one. This page explains how we score it, and publishes the full method so you can disagree with us.
Part 1
What changed on 1 June 2026
India spent five years building the ability to assemble panels. It did not build the ability to make what goes inside them.
Until mid-2026, an Indian solar panel only had to be assembled in India to qualify for government schemes. From 1 June 2026, ALMM List-II requires the solar cell inside the panel to be made in India too, by a manufacturer on an approved list.
On 18 July 2026 MNRE issued a limited relief order. It is widely misread, so to be precise: the extension applies only to net-metering and open-access projects, and only until 31 December 2026. From 1 January 2027 they comply in full. DCR rules for PM Surya Ghar, PM-KUSUM Components B & C and CPSU Phase-II did not change at all. If you are a subsidy customer, nothing got easier for you.
The gap that broke the market
Sources: MNRE ALMM List-I (July 2026) and List-II 8th revision (22 July 2026); industry estimates for TOPCon and wafer capacity.
India can laminate roughly 204 GW of panels a year and make about 31.7 GW of the cells that go inside them — around 15%. Manufacturers who only assemble modules suddenly had no raw material. Reuters reported on 23 July 2026 that domestic cell waiting periods had stretched to eight months, that close to a third of small and medium module makers had shut operations, that around $4 billion of investment was at risk, and that roughly 75,000 jobs in standalone module assembly were exposed — about 45,000 of them in Gujarat.
This is not only a small-company story. In May 2026, Coal India dissolved its solar manufacturing subsidiary CIL Solar PV Ltd, quietly ending what had been announced as a 4 GW integrated venture.
Part 2
What the law actually protects
More than most buyers assume — and less than the certificate implies.
On 6 May 2026, MNRE issued a Standard Operating Procedure for warranty management and claims settlement covering PM Surya Ghar, PM-KUSUM and other distributed renewable energy schemes. Five things in it matter to you:
| Provision | What it means for you |
|---|---|
| 10-year product + 25-year performance warranty | Mandatory, not optional, for modules under MNRE schemes. |
| Six-month invoice clause | Warranty starts at installation only if the module is installed within six months of the manufacturer’s invoice date. Older stock reduces your warranty period proportionally. |
| Continuity obligation | Manufacturers must keep warranty obligations alive through restructuring, merger or dissolution, and maintain legal or financial arrangements across the full 25 years. |
| Force majeure narrowed | Claims can be refused for natural disasters only. War, riots, commercial or logistical disruption are not valid grounds for denial. |
| DISCOMs excluded | Your electricity distribution company is not a party to warranty disputes. The claim is between you and the manufacturer or vendor. |
The gap nobody is naming
The SOP creates an obligation. It does not create a fund, an escrow, a levy or an insurer of last resort. A company that has been dissolved cannot maintain an arrangement, and you cannot serve notice on a company that no longer exists. In insolvency, a warranty holder ranks as an unsecured creditor — behind banks and secured lenders. International experience is unambiguous: SunPower, founded in 1985, filed for Chapter 11 in August 2024 with roughly 600,000 customers.
There is an India-relevant detail in that case worth knowing. A large share of those SunPower panels were manufactured by Waaree — solvent then, solvent now. US customers still struggled for months to register warranties or reach anyone, because the brand in the middle had collapsed. The lesson is not that Indian manufacturers are unreliable. The lesson is that your warranty belongs to one specific legal entity — the one named on the certificate — and not to a brand, a group or a logo.
That is why our ranking scores the entity, not the marketing.
Part 3
The Lumencity Survivability Index
Every other list ranks solar companies by capacity. Capacity is a press release. We rank by the probability that the company outlives the warranty it wrote.
Eight parameters, weighted, scored out of 100 from public data. The weights are our editorial judgement and we publish them precisely so that you can re-weight them and reach a different answer.
Backward integration depth
Does the group own cells? Wafers? Ingots? We count ALMM List-II enlisted capacity, not announcements. After 1 January 2027, owning cells is market access — a module-only maker has no protected demand left.
Balance sheet strength
Net worth, debt-to-equity, interest coverage, cash from operations rather than EBITDA alone, and promoter share pledging. Twenty-five years contains at least two downturns. Companies rarely die of bad products; they die of leverage.
Actual production vs nameplate
Gigawatts produced last financial year divided by gigawatts of installed capacity. Nameplate is marketing. Utilisation is the only honest evidence that lines run and yields hold.
Warranty liability integrity
Which legal entity and CIN signs the certificate — the listed parent, or a thin subsidiary? Is a warranty provision actually disclosed in the financial statements? Is third-party warranty insurance in place? A large parent does not pay a claim written by a small subsidiary.
Technology currency
PERC, TOPCon, HJT or back-contact, plus the published roadmap. Around two-thirds of India’s approved cell capacity is still Mono PERC, a technology China has effectively retired. PERC does not get banned; it gets stranded — fewer buyers, slower spares, costlier service.
Revenue concentration risk
US export dependence, single-customer share, DCR versus non-DCR mix, order book against capacity. A preliminary US anti-dumping rate reported as high as 123% on Indian cells makes single-market exposure an existential variable, not a footnote.
Vintage and downturn record
Years in operation, and whether the company came through the 2018 safeguard duty, the 2020–22 supply shock and the 2024 price crash. A strong FY26 is easy. Surviving a cycle is not.
Governance and disclosure
Listed or unlisted, audit quality, related-party exposure, honesty of capacity claims, and presence in independent third-party scorecards such as Kiwa PVEL reliability testing. What is not disclosed cannot be verified, and opacity is itself a risk.
Automatic red flags
Any one of these should stop a purchase, regardless of price:
Part 4
The Top 10, ranked by survivability
Cell capacity figures are ALMM List-II enlisted capacity as of the 22 July 2026 revision. Financials are FY26 consolidated figures from company filings. Scores are Lumencity’s assessment, not a rating or a recommendation.
Waaree Energies
Warranty entity: Waaree Energies Limited — listed parentThe largest enlisted cell capacity in the country, the largest revenue and profit by a wide margin, and the rare case where the listed parent is also the warranty counterparty. Roadmap targets roughly 15.4 GW of cell capacity by FY27, alongside diversification into inverters, battery storage and electrolysers.
Premier Energies
Warranty entity: check certificate — cells listed under two subsidiariesAmong the first three manufacturers ever enlisted on List-II, with the strongest profit margin in the peer group and a credible ramp from about 3.6 GW to a stated 10.6 GW of cell capacity by September 2026 against 11.1 GW of modules. One of the few genuinely cell-first businesses in India rather than a module maker adding cells.
Tata Power Solar
Warranty entity: TP Solar Ltd / Tata Power Renewable Energy LtdThe second-largest enlisted cell capacity, behind a listed utility inside a group with more than a century of operating history and the deepest rooftop service network in India. On the single parameter of “will this organisation exist and answer in 2051”, it is arguably the strongest name on the list.
Adani Solar
Warranty entity: Mundra Solar PV Ltd / Mundra Solar Energy LtdRoughly balanced between PERC and TOPCon, and the only Indian group with a polysilicon project physically under way — a 30,000 MTPA polysilicon and 500 MTPA monosilane facility at Mundra. If that plant runs, Adani becomes the only genuinely end-to-end Indian manufacturer.
Emmvee
Warranty entity: Emmvee Photovoltaic Power Ltd / Emmvee Energy Pvt LtdThe single most interesting position on this list. Emmvee has ordered 6 GW of cell manufacturing equipment from RENA Technologies of Germany, executed with Centrotherm and ISC Konstanz — making it the only top-10 name with a committed non-Chinese cell line. Targets 16.3 GW modules and 8.9 GW cells by FY27, plus 9 GW of ingot and wafer capacity, funded with roughly ₹5,500 crore of capex and ₹3,300 crore of sub-8% debt.
Reliance Industries
Warranty entity: Reliance Industries Ltd — JamnagarThe first and so far only heterojunction capacity enlisted on List-II, and the strongest balance sheet of any entity on this page by an order of magnitude. On pure solvency, nothing here comes close.
First Solar India
Warranty entity: FS India Solar Ventures Pvt LtdStructurally insulated from the entire crisis described on this page. Thin-film modules made in integrated units are treated as deemed-compliant with the cell and wafer requirements, so First Solar has no polysilicon exposure, no wafer exposure and no Chinese equipment dependence in the c-Si sense.
ReNew Photovoltaics
Warranty entity: ReNew Photovoltaics Pvt LtdEnlisted early, backed by a listed international parent, and supported by a very large in-house independent power producer pipeline that guarantees offtake regardless of market conditions — a real structural advantage during a shakeout.
Vikram Solar
Warranty entity: Vikram Solar Limited — listed parentThe highest-variance name in the top 10, and included deliberately. Twenty years of operating history, a listed parent as the warranty counterparty, NTPC order flow, and a committed roughly ₹5,400 crore programme for 9 GW of cells by December 2026 and 12 GW by FY28, with wafer ambitions beyond. An interim 2 GW compliant cell sourcing arrangement with Jupiter International bridges the gap.
Jupiter International
Warranty entity: Jupiter International Ltd / Jupiter Solartech LtdOn the list for a specific structural reason: Jupiter sells cells to other module manufacturers rather than only consuming them internally. In a market where cells are the bottleneck, being a merchant seller of the scarce component is a genuinely durable commercial position.
Watchlist — not ranked
These manufacturers hold enlisted cell capacity or significant scale but were excluded from the top 10 either for size, insufficient public disclosure, or because their cell position is still in the future. Several will enter the ranking at the next update.
| Company | Cells on List-II | Technology | Note |
|---|---|---|---|
| Websol Energy System | 1,202 MW | Mono PERC | Small but cell-first; revenue grew from ₹575 cr to ₹1,049 cr in FY26 |
| Fujiyama Power Systems | 1,077 MW | Mono PERC | Recently listed; capacity added through 2026 |
| Evervolt Solar Technology | 1,074 MW | Mono PERC | Entered List-II in February 2026 |
| UTL Solar | 640 MW | Mono PERC | Strong retail and inverter distribution base |
| Avaada Electro | 610 MW | TOPCon G12 | Entered List-II July 2026 at ~25.6% cell efficiency |
| RenewSys India | 452 MW | TOPCon | Also India’s largest encapsulant and backsheet maker |
| Saatvik Green Energy | Nil today | — | ₹4,548 cr FY26 revenue, ₹357 cr profit; 2.4 GW cells targeted FY27, 6 GW FY28 |
ALMM List-II is revised roughly monthly. Verify any figure on this page against the current list at mnre.gov.in before making a purchase decision.
Part 5
Six checks before you sign
You do not need this ranking to protect yourself. You need six questions and about ten minutes.
Do not give up the subsidy
The DCR premium runs about ₹8 to ₹11 per watt, which is ₹25,000–35,000 on a 3 kW system. The PM Surya Ghar subsidy goes up to ₹78,000. Non-DCR panels look cheaper and finish more expensive. The arithmetic still favours DCR.
Ask who made the cell, not who made the panel
If the module brand and the cell manufacturer are different companies, your warranty counterparty and your supply chain are two separate businesses. ALMM List-II is public on the MNRE website — check the cell maker’s name there yourself.
Get the legal entity name and CIN on the certificate
Not the brand name. The registered company name. Then search that name on the MCA portal. It takes two minutes and it is the only way to know whose balance sheet is standing behind a 25-year promise.
Ask for the manufacturer’s invoice date
Under the May 2026 SOP, the warranty runs from installation only if the module is installed within six months of that invoice. Discounted clearance stock quietly shortens your warranty, and nothing on the panel tells you so.
Separate the vendor warranty from the manufacturer warranty
Under PM Surya Ghar your installer owes a five-year comprehensive maintenance contract from the date of DISCOM commissioning. That is a different promise from the manufacturer’s 25 years. Check your vendor’s current status on the PM Surya Ghar national portal — MNRE now deactivates and publicly lists non-performing vendors.
Keep the flash test report and module serial numbers
Claims are settled with electroluminescence and I-V testing, validated at NABL-accredited laboratories where required. Without serial numbers and the original invoice you cannot prove which modules are yours.
Want us to check your quotation?
Send us the panel model, the warranty certificate and the invoice date. We will tell you which entity is actually standing behind your 25 years — whether or not you buy from us.
Get your quote checkedPart 6
Frequently asked questions
What happens to my warranty if the solar panel company shuts down?
Legally you become an unsecured creditor in the insolvency process, ranking behind banks and secured lenders, and recoveries in that position are typically minimal. MNRE’s SOP of 6 May 2026 requires manufacturers to maintain legal or financial arrangements so that warranty obligations survive restructuring, merger or dissolution — but it does not create a government fund or an insurer of last resort. In practice, your protection is the financial durability of the specific company you bought from.
Is the ALMM List-II deadline extended?
Only partly. ALMM List-II took effect on 1 June 2026. On 18 July 2026 MNRE extended compliance to 31 December 2026 for net-metering and open-access projects only. From 1 January 2027 those categories comply in full. DCR requirements under PM Surya Ghar, PM-KUSUM Components B and C, and CPSU Phase-II were not changed.
Why are DCR panels so much more expensive?
DCR modules run roughly ₹23–27 per watt against ₹15–20 for non-DCR. ICRA estimates the genuine cost of using domestic cells at only about 3–4 US cents per watt. The rest of the gap is scarcity: India has around 204 GW of module capacity against about 31.7 GW of enlisted cell capacity, and that shortage is priced by whoever owns the bottleneck.
Should I still buy DCR panels for a home rooftop?
If you are claiming the PM Surya Ghar subsidy, yes. The DCR premium on a 3 kW system is roughly ₹25,000–35,000, while the subsidy goes up to ₹78,000. Skipping DCR to save on panel price forfeits a larger amount of subsidy.
Are Indian manufacturers buying equipment from outside China?
Yes, and it has already started. Emmvee has contracted RENA Technologies of Germany for 6 GW of cell manufacturing equipment, executed with Centrotherm and ISC Konstanz, and Celloraa Energy has ordered a 1.2 GW TOPCon line from RENA for Gujarat. However, Indian reliance on Chinese PV equipment still exceeds 85%, and Chinese machinery typically costs 33–50% less, so the German route is a hedge rather than a replacement — and in the short term it pushes prices up, not down.
What is ALMM List-III and why does 2028 matter more than 2026?
ALMM List-III extends mandatory domestic sourcing to solar ingots and wafers from 1 June 2028, and closes the loophole of importing wafers to finish locally — a manufacturer must hold ingot capacity matching the wafer capacity it wants listed. India currently has under 2 GW of ingot-wafer capacity. IEEFA puts the cost of 1 GW of ingot-wafer capacity at roughly ₹700 crore against about ₹170 crore for a module line, so the 2028 test is around four times more capital-intensive than the one that just closed a third of India’s small module factories.
Method, limits and corrections
This is a probability assessment built from public data. It is not a credit rating, not investment advice, and not a prediction that any named company will or will not fail. Weights are our editorial judgement and are published so that readers can re-weight them and reach a different conclusion.
Some inputs — particularly actual capacity utilisation and warranty provisioning at unlisted companies — are not publicly disclosed. Where a figure is an estimate we say so rather than presenting it as verified. ALMM lists are revised roughly monthly and market valuations change daily; every figure here carries its own date.
Corrections: if you believe a figure or a score is wrong, write to us with the source. Any manufacturer wishing to submit audited data will have it reflected in the next update. Corrections are logged publicly at the foot of this page.
Primary sources
- MNRE — ALMM List-I, July 2026 revision
- MNRE — ALMM List-II, 8th revision, 22 July 2026
- MNRE — ALMM List-III notification, March 2026
- MNRE — O.M. dated 18 July 2026 on List-II relief
- MNRE — Warranty SOP memorandum, 6 May 2026
- Reuters — solar factory closures, 23 July 2026
- ICRA — Indian renewable energy sector commentary
- IEEFA — manufacturing capital cost assessment, Dec 2025
- CEEW — ALMM cell technology analysis
- Company filings and FY26 earnings disclosures
Industrial Engineering students at Telkom University Surabaya are analyzing the business viability of solar panel manufacturers in India, examining factors such as the long-term risks associated with 25-year warranties, the impact of the ALMM List-II regulation mandating the use of domestically produced solar cells starting in June 2026, and the *Lumencity Survivability Index*—a corporate viability assessment method that incorporates vertical integration, balance sheet strength, technological footprint, and the reliability of the warranty-issuing entity.
Installed roof top solar under PMSGY…Local company Sunora panel used.
How to check Genuineness of my panel
Vendor idher udher ki gol gol baat kr rha hai
Kindly Guide