Havells vs Polycab Solar Inverter 2026: Honest Comparison

Havells and Polycab arrived at solar from the same direction. Both built their businesses on electrical goods, both are household names in Indian wiring, and both now sell inverters, modules, and cable under one catalogue. That shared history explains their real strengths and their real gaps.

It also creates a trap. A brand you trust for switchgear has earned nothing yet on power electronics. Those are different disciplines with different failure modes and different service demands.

This guide compares the two on verified documents only. Every specification below comes from a named catalogue, datasheet, product page, or ministry notice, with the year attached. Company marketing claims are labelled as such.

You get company background, published inverter specs, the cable story where both genuinely lead, ALMM status, a warranty table, service figures, a worked string-sizing example, and the questions that settle a quote.

Qbits publishes this guide and sells solar inverters, so it competes with both. It appears in two marked places, held to the same evidence standard as the rest.

Short version. Polycab is the stronger cable and balance-of-system brand and prints IP66 on its mid-range three-phase inverters. Havells prints the longer inverter warranty at 10 years and now sits on ALMM List-I for modules. Neither is a solar-specialist inverter house. Decide on the two exact models quoted, their MPPT counts, the written warranty, and which brand has a stocking service partner in your district.

Company background and what each actually manufactures

Both are large Indian electrical manufacturers where solar is one vertical, not the core business. Polycab is the country’s biggest wire and cable maker and has built grid-tie inverters since 2016. Havells is a fast-moving electrical goods group that sells inverters, modules, cable, and installation. Neither started as a power-electronics house, and that shapes how they engineer, price, and service solar.

Polycab produces around 3.9 million kilometres of cable a year, according to its Solar Catalogue (2025). The same catalogue states it has established a Solar Grid Tie Inverter manufacturing setup and offers Make in India inverters from 2 kW to 125 kW.

Note the boundary there. Polycab’s 350 kW UT-series utility inverter sits outside that stated band. That is not a criticism, it is a sourcing question for the dealer.

Havells reported net revenue of ₹21,746 crore in FY 2024-25, according to AlphaStreet (2025). Circuit protection, cables, fans, switches, appliances, and the Lloyd brand dominate that number. Its solar business page describes a one-stop solution covering design, engineering, manufacturing, sales, installation, and services.

On modules, Havells took a partnership route first. It invested ₹600 crore for a stake of roughly 9% in Surat-based module maker Goldi Solar in April 2025, according to pv magazine India (2025).

Solar inverter range and published specifications

Both publish complete grid-tie datasheets, which is more than several consumer brands manage. Havells covers 1.1 kW to 100 kW in its printed Enviro GTi catalogue and advertises up to 350 kW online. Polycab covers 2 kW to 125 kW as Make in India, plus a 350 kW utility series. Polycab prints IP66 on its three-phase units, where most Havells three-phase models print IP65.

Sources: Havells Solar Grid-Tie Inverter catalogue, Havells solar business page, Polycab Solar Catalogue 2025, and the Polycab grid-tie inverter store.

The IP gap matters for coastal, dusty, or exposed wall mounting, and our IP65 against IP66 guide explains what the second digit buys. Havells’ low-kW ladder from 1.1 kW suits small roofs and replacement jobs.

One caution on currency. Printed catalogues lag websites at both companies, so ask for the current datasheet revision for your model using our datasheet reading guide.

Where both genuinely lead: solar cable and balance of system

This is where their core business pays off, and where either brand is defensible on specification. Polycab entered solar in 2012 with DC cables and publishes the wider ladder, from 1.5 sq mm to 300 sq mm. Havells sells solar DC cable to the same BS EN 50618 standard, and packages DC and AC junction boxes with Type 2 surge protection.

Polycab’s DC cable is the deepest product in either catalogue. It is an H1Z2Z2-K construction with a tinned copper conductor to IEC 60228 class 5. Insulation and sheath are electron-beam cross-linked and halogen free. The rating is 1500 V DC nominal, usable from minus 40 to plus 120 degrees Celsius, with accreditation to EN 50618 and compliance to IEC 62930, according to the Polycab Solar Catalogue (2025).

On balance of system the catalogues diverge slightly:

• Polycab lists solar DC MCBs, MC4 connectors, cable tray, lugs, glands, and distribution boxes, positioning itself as a one-stop component supplier.
• Havells lists DC junction boxes with fuse, isolator, and Type 2 SPD, AC junction boxes with a 32 A MCB, plus packaged GREEHA residential kits at 3.3 kW and 5 kW.

For an EPC buying by the reel, Polycab’s size ladder is the differentiator. For a homeowner buying a boxed kit, Havells’ packaging removes procurement decisions.

Panel offerings and ALMM status

Module compliance is where brand halo does the most damage, because ALMM applies to modules and cells and not to inverters at all. Havells joined ALMM List-I in July 2026 for a 1,221 MW Surat plant. Polycab states in its own catalogue that its modules are on the list. Get that separation right and half the confusion in a quote disappears.

MNRE added Havells India Limited to List-I by office memorandum dated 6 July 2026, covering a Surat facility with 1,221 MW of enlisted capacity. Approval runs to 5 July 2030 subject to valid BIS certification, according to SaurEnergy (2026). That revision took cumulative List-I capacity to 204,383 MW, according to Energetica India (2026). Havells lists Mono PERC and TOPCon bifacial modules, including a DCR 144-cell 545 Wp model.

Polycab’s catalogue prints three module families and a dedicated ALMM model number field on its TOPCon datasheet, which is the correct way to publish it.

Source: Polycab Solar Catalogue (2025).

The procedure matters more than either claim. List-I is revised almost monthly, and enlistment attaches to a specific model number at a specific plant. Verify your exact module against the current dated revision on the MNRE ALMM page, and read the ALMM list definition for how List-I and List-II differ. A brand-level claim is not a model-level check.

Warranty terms compared

Warranty is the cleanest numeric difference between these two brands, and it runs in Havells’ favour on inverters. Havells prints 10 years as standard on every Enviro GTi grid-tie datasheet reviewed. Polycab prints 7 years for its 2 kW to 125 kW range and 5 years on the 350 kW utility series. Modules run far longer than inverters on both sides.

That last row is the one buyers skip. Neither company publishes the remedy type, the freight and labour liability, the registration deadline, or the claim-honouring entity. Years are the easy part. Our inverter warranty guide has the document checklist.

Note the channel mismatch too. Polycab’s printed catalogue shows 7 years while its own store filter offers 5 and 8. Neither is wrong, they describe different SKUs. The written warranty for your SKU is the only binding number.

One competitor claim, for reference, not editorial fact. Qbits publishes an expandable warranty, and its public datasheets do not define the base term, remedy, registration deadline or exclusions, so obtain the current written warranty for the exact quoted model. Note the trigger in that phrase. Dispatch starts after approval, not after the complaint, and that caveat applies to every brand’s stated turnaround.

Worked example: why MPPT count decides your roof layout

This worked example uses published datasheet figures only. It is arithmetic, not field data.

Inputs, all published:

1. Module: Polycab NSM550-144, 550 W, Voc 50.49 V, Imp 12.88 A at STC, Voc temperature coefficient minus 0.26% per degree Celsius (Polycab Solar Catalogue, 2025).
2. Inverter A: Polycab PSIT-10K-SM1R2, 1 MPPT, 1 maximum PV string, MPPT range 160 V to 1000 V, max DC 1100 V, max input current 20 A (same catalogue).
3. Inverter B: Havells Enviro GTi 11000 TX-NG, 2 MPPTs, 1 string per MPPT, MPPT range 140 V to 1000 V, full-power window 420 V to 850 V, max 15 A per MPPT (Havells grid-tie catalogue).

Case A, one orientation on the Polycab unit. Take 18 modules, so 9.9 kWp. String Voc at STC is 18 x 50.49 = 908.8 V. At a 10 degree cell temperature the correction is 15 x 0.26% = 3.9%, giving 944 V. That clears the 1000 V MPPT ceiling and the 1100 V limit, and Imp of 12.88 A sits under the 20 A rating.

Case B, east-west split on the Havells unit. Take 9 modules per MPPT, so 9.9 kWp total. String Voc at STC is 9 x 50.49 = 454.4 V, rising to 472 V cold. That is inside the 140 V to 1000 V range and above the 420 V full-power threshold. Imp is under the 15 A per-MPPT limit.

Service and distribution network

Distribution reach and solar service reach are different things, and both companies illustrate the gap. Polycab reports over 4,300 dealers and distributors and more than 200,000 retail outlets. Havells reports roughly 18,000 dealers and 248,000 retailers. Yet Havells publishes only 25 plus approved solar installers nationally. Electrical distribution is not the same asset as a trained solar service network.

The sourced figures: Polycab’s dealer and retail counts come from its Integrated Annual Report 2024-25, and its catalogue states it has supplied 1.5 GW of capacity and over 100,000 inverters across nine years. Havells’ dealer and retailer counts come from its FY25 annual report as summarised by StockInsights (2025). Its solar business page publishes 650 plus service points with a 24 to 48 hour turnaround, a 50-person service team, and a 1.2 GW plus solar footprint.

Read the solar numbers carefully. The dealer who sells the inverter is rarely the engineer who climbs to your roof in year six.

Two checks cut through it. Ask which named entity performs the warranty site visit in your district. Then call the service line as a stranger and ask that partner what spare inverters are on the shelf today. Our reliability evaluation method covers the rest.

The brand-halo trap and how to test for it

Here is the contrarian part. It applies to every consumer-electrical brand selling solar, including the one that publishes this page.

Trust in a wiring brand is trust in a commodity process: copper drawing, compound extrusion, quality control on a continuous line. An inverter is a switched power converter with firmware, capacitors, a grid-protection relay, and a thermal design that must survive 45 degree afternoons for 20 years. Competence in the first does not transfer to the second.

The halo runs the wrong way on paper too. Polycab’s cable accreditation is strong evidence about its cable, not about its inverter firmware. Havells’ plants are real, but they do not prove your unit was built in one.

Four tests that break the halo:

1. Ask which plant built this SKU. A brand claim covers a portfolio. The country of origin declaration covers your box.
2. Compare warranty by category, not by brand. Cable and modules carry 25 to 30 year terms in both catalogues. The inverters carry 7 or 10.
3. Check certification scope. BIS registration and IS or IEC numbers are per model, not per company.
4. Separate the ALMM question. A module on the ALMM module list and a compliant inverter are two verifications on two documents.

Apply all four to every brand you shortlist. Our Indian inverter brand comparison runs this market-wide, and the Havells against Luminous comparison covers the other common Havells matchup.

Where each brand fits: homeowner, EPC, and C&I

Fit depends on who is buying and what the scope includes. Havells suits the homeowner who wants a packaged kit and an installer from one supplier. Polycab suits the EPC consolidating cable, protection, modules, and inverters on one purchase order. For commercial and industrial rooftops the call is close, and the specific model decides it.

Homeowner, 2 kW to 6 kW, single phase. The GREEHA kits bundle cable, DCDB, and ACDB, and Havells installs directly. Polycab’s single-phase PSIS range is competitive on specification, but you usually buy it through an integrator. Settle your system category first with the on-grid against hybrid guide, because neither brand’s grid-tie unit gives you outage backup.

EPC and system integrator. Polycab’s reported 24-hour delivery capability and its single-vendor breadth matter most on a project schedule.

Commercial and industrial rooftop. Polycab’s IP66 enclosures and its 3 to 9 MPPT designs from 40 kW to 125 kW suit multi-orientation industrial roofs. Havells counters with 10 years standard warranty, 98.9% published efficiency on its 25 to 50 KT NG models, and in-house installation. Score the models quoted, then ask which brand has a stocking service partner within driving distance.

What to ask a dealer before you sign

Work through this with both quotations side by side. Every item is answerable from a document.

Questions 7, 10, and 11 separate a serious offer from a cheap one. Two quotes 20% apart often differ by an entire scope of work. The Qbits on-grid inverter range and product library publish the same fields for a third datasheet to compare against.

The Bottom Line

Both are credible Indian electrical manufacturers with real solar lines and published datasheets. Polycab is the better cable and balance-of-system house and prints IP66 on its mid-range three-phase inverters. Havells prints the longer inverter warranty at 10 years, sits on ALMM List-I for modules, and will install the system. Neither is a solar-specialist inverter house, and neither publishes remedy, freight, or labour terms.

Do this next:

• Put both quotations in one table by exact model number, then fill in MPPT count, IP rating, maximum DC voltage, printed efficiency, and warranty years from the current datasheets.
• Call each brand’s service line anonymously, ask for the nearest authorised partner in your district, and ask that partner what is on the shelf today.
• Send us both competitor model numbers and your roof details for a like-for-like Qbits technical comparison. Qbits sells inverters only and has not independently tested either competing model.