Growatt vs Deye vs Sungrow Solar Inverter 2026 India

Growatt, Deye, and Sungrow are the three Chinese string inverter brands that dominate Indian rooftop installations in 2026. All three are BIS-certified (Bureau of Indian Standards) under IS 16221 and IS 16169, all three appear on the ALMM list maintained by the Ministry of New and Renewable Energy, and all three are widely stocked through Indian distributors for systems from 3 kW (kilowatt) to 100 kW. The price spread is wide — a 5 kW Growatt sits at ₹35,000–₹40,000, a 5 kW Deye at ₹40,000–₹45,000, and a 5 kW Sungrow at ₹55,000–₹65,000. For Indian buyers staring at three quotes that look superficially identical, the right pick depends on heat tolerance at 45°C ambient, lithium battery plans, warranty horizon, and how close the nearest authorised service centre actually sits.

This guide covers the six-factor scorecard we use during quote review at Heaven Green Energy, the actual specifications and Q2 2026 India pricing for the highest-volume 3 kW, 5 kW, and 10 kW size points, and the use-case verdict that matches your project to the right brand — without brand loyalty getting in the way.

Direct answer. Growatt is the cheapest of the three at ₹35–40K for a 5 kW string inverter and suits budget-conscious residential PM Suryaghar projects. Deye sits in the middle at ₹40–45K and is the default choice if you want native hybrid and battery-ready capability today. Sungrow is the premium pick at ₹55–65K with 98.4% efficiency, 10-year standard warranty, and best-in-class heat resistance — the right choice for commercial rooftops and high-ambient sites above 40°C.

If you are picking between these three after already shortlisting Indian brands, our Luminous vs Microtek inverter comparison covers the home-battery side; this guide focuses on the grid-tie and hybrid string inverters that PM Suryaghar and commercial net metering applications actually require.

Why These Three Brands Dominate Indian String Inverter Market

The grid-tie inverter market in India has consolidated. Of roughly forty brands listed on the BIS solar inverter register, three names appear on the majority of installed quotes — Growatt, Deye, and Sungrow. Each entered the Indian market with a different positioning, and that positioning still holds in 2026.

Growatt arrived first, in 2010, and rode the early rooftop solar wave with its MIN series targeting 1–10 kW residential projects. Aggressive distribution through EPC (Engineering, Procurement, Construction) partners and competitive pricing on the MIN 3000TL-X and MIN 5000TL-X gave it deep penetration in PM Suryaghar installations. Today Growatt has the widest installer base — over 35 cities with authorised service partners and the largest field-installed count of the three brands.

Deye built its India footprint around the SUN-3K, SUN-5K, and SUN-12K hybrid inverters, which ship battery-ready out of the box and integrate cleanly with lithium iron phosphate (LFP) packs. As hybrid systems became more common in 2024–25 — driven by unreliable grid in tier-2 and tier-3 markets — Deye captured the niche of buyers who wanted a single inverter that could handle grid-tie, battery charging, and backup loads. Its India service network is the smallest of the three at around 18 cities, but it concentrates on the hybrid use case.

Sungrow is the premium and commercial choice. With 98.4% peak efficiency, 10-year standard warranty, IP66 ingress protection across the SG-K residential range, and broad commercial product depth up to 110 kW, Sungrow targets long-horizon buyers — commercial rooftops, EPC contracts with O&M (Operation and Maintenance) tails, and high-ambient sites where heat derating matters. Its 25-plus city service network is smaller than Growatt’s but is staffed with engineers trained on the full SG and SH lineups.

All three are listed on the current ALMM register, which means they qualify for PM Suryaghar subsidy installations and DISCOM (Distribution Company) net metering approvals nationwide.

The 6-Factor Inverter Scorecard for Indian Conditions

Heaven Green Energy uses a named framework — The 6-Factor Inverter Scorecard for Indian Conditions — to score string inverter brands on the six metrics that matter once an inverter is mounted on an Indian rooftop. Lab spec sheets only tell half the story. The other half emerges over five summers, three monsoons, and one warranty claim.

Factor 1 — European weighted efficiency. The figure that appears on every datasheet, but worth knowing what it means. European weighted efficiency averages performance across irradiance bands weighted to European insolation. Indian peak sun hours run higher than Europe’s, so real-world Indian performance is typically 0.3–0.5% better than the rated figure. Growatt rates at 97.5%, Deye at 97.8%, Sungrow at 98.4%. On a 5 kW system generating 8,000 kWh per year, the gap between Growatt and Sungrow is about 72 kWh — worth roughly ₹500 per year at residential tariffs.

Factor 2 — Durability in heat (derating above 40°C ambient). Every string inverter derates output above a threshold ambient temperature. Sungrow holds full output to 45°C in the SG-K range thanks to a larger heatsink and IP66 enclosure with active cooling. Deye holds to 42–43°C. Growatt MIN-series derates from 40°C onward. In Rajasthan, Gujarat, and Tamil Nadu summers — where rooftop ambient frequently hits 48–52°C — Sungrow’s derating curve gives it a 4–7% generation advantage in May and June. This is the single biggest reason to pick Sungrow on a Jodhpur or Kutch site.

Factor 3 — Battery-ready or hybrid-native. Deye is hybrid-native: the SUN-K series is built around a battery port, BMS (Battery Management System) communication over the CAN bus, and seamless grid-tie + backup switching. Growatt’s newer SPH range adds battery capability but requires additional modules for some configurations. Sungrow’s SH series is fully hybrid and built around lithium integration at a higher price point than Deye.

Factor 4 — Warranty length and claims process. Growatt offers a 5-year standard warranty with a paid extension to 10 years. Deye offers 5 years standard, similarly extendable. Sungrow offers 10 years standard on residential SG and SH ranges — a real differentiator for commercial buyers modelling 20-year O&M costs.

Factor 5 — After-sales network density. Growatt has the widest with 35+ cities. Sungrow follows with 25+ cities. Deye has 18+ cities but covers all the major rooftop markets — Ahmedabad, Surat, Pune, Bengaluru, Hyderabad, Chennai, Mumbai, Jaipur, Delhi NCR. If your site is in a tier-3 city, check Growatt first; if hybrid is mandatory, Deye is worth the trip.

Factor 6 — Price per kW. Growatt sets the floor — typically 20–25% cheaper than Sungrow for the same kW rating. Deye sits 10–15% above Growatt. For PM Suryaghar 3 kW systems where the central subsidy is fixed at ₹78,000, every ₹5,000 saved on the inverter flows directly to the customer’s pocket.

Score a brand by the factor that matches your site. A residential rooftop in Vadodara with stable grid and no battery scores Growatt highest. A villa in Jodhpur with frequent outages and a planned LFP pack scores Deye. A 25 kW commercial rooftop on a warehouse in Pune scores Sungrow. The scorecard does not crown one winner — it matches the inverter to the project. For a deeper general framework, read how to choose the best solar inverter for your home.

Growatt Inverter Lineup — Strengths and Weaknesses

Growatt’s India range covers four product families that span the entire residential and small commercial spectrum. Understanding which series fits which application avoids the common mistake of buying a single-MPPT (Maximum Power Point Tracker) inverter for a multi-orientation roof.

MIN series (1–10 kW, single-phase residential). The MIN 3000TL-X and MIN 5000TL-X are Growatt’s volume sellers. Single-phase output, dual-MPPT input, transformerless topology, and a peak efficiency of 97.5%. Wi-Fi monitoring via the ShineWiFi-X dongle is sold separately for around ₹2,500. IP65 enclosure handles Indian monsoons but the casing temperature climbs quickly under 45°C ambient.

MOD series (3–15 kW, three-phase residential and light commercial). Three-phase output for homes with three-phase service or small shops. Triple-MPPT input handles multi-roof configurations. The MOD 10KTL3-X is the most commonly specified model for 8–10 kW residential projects in Gujarat.

MAX series (50–125 kW, commercial). Three-phase commercial grade with up to 12 MPPT inputs. Used in 25–100 kW factory and warehouse installations where Sungrow’s premium pricing is a stretch.

SPH series (3–10 kW, hybrid). Growatt’s hybrid line, launched to compete with Deye’s SUN-K range. Battery-ready with LFP support, but the install base in India is smaller and field engineers have less troubleshooting depth than on the MIN series.

Where Growatt wins. Lowest entry price of the three brands. Widest service network. Largest installer familiarity — most EPC partners in India can install and commission a MIN-X inverter without manufacturer support. Easiest warranty claims because of the dense service footprint and reliable spare-parts stocking through the India master distributor.

Where Growatt loses. Heat derating above 40°C hits generation in May and June. Standard 5-year warranty is shorter than Sungrow’s 10. Hybrid range is newer and less proven than Deye. Build feel is more plastic, less industrial than Sungrow.

Deye Inverter Lineup — Strengths and Weaknesses

Deye’s product strategy is concentrated rather than broad. The brand picked hybrid as its category and built everything around the SUN-K series. This narrow focus is both its strength and its limitation.

SUN-K hybrid series (3–12 kW, single and three-phase). The SUN-3K-SG03LP1, SUN-5K-SG04LP1, and SUN-12K-SG04LP3 are the volume models. All three are battery-ready with CAN-bus BMS integration for Pylontech, BYD, Dyness, and most major LFP packs sold in India. Dual-MPPT, 97.8% peak efficiency, and a changeover to backup loads in under 10 milliseconds during grid failure.

SUN-K commercial hybrid (15–50 kW). Three-phase hybrid for larger commercial and small industrial sites. Less common in India than the residential SUN-K, but a strong fit for net-metered commercial rooftops that also need critical-load backup.

Where Deye wins. Hybrid is native, not bolted on. Battery integration works out of the box with the major Indian-supplied LFP brands. The seamless transfer between grid-tie and backup mode is the cleanest of the three. Wi-Fi monitoring via the Solarman app is free and integrated. For off-grid and hybrid use cases — increasingly common in Indian residential — Deye is the default. Read more on system architecture choices in our on-grid vs off-grid vs hybrid systems guide.

Where Deye loses. Service network is the smallest at 18+ cities — if your site is rural or tier-3, response times can stretch to 7–10 days. Pure grid-tie (no battery, no backup) installations are over-specified on a Deye SUN-K; you pay for hybrid hardware you do not use. Build feel is solid but not premium.

Get a free inverter selection consult. Our engineers compare your bill, roof, battery plans, and ambient conditions, then recommend the right brand from Growatt, Deye, or Sungrow with quotes from each. Get your free quote →

Sungrow Inverter Lineup — Strengths and Weaknesses

Sungrow is the only one of the three brands consistently used in utility-scale solar farms across India — the same product depth that supplies multi-MW projects underpins the residential SG and SH ranges. The result is commercial-grade engineering in residential casings, with the price tag to match.

SG-K residential string (3–10 kW, single and three-phase). SG3.0RS, SG5.0RS, SG10RS for residential. Peak efficiency 98.4%, IP66 enclosure (the only one of the three brands at IP66 — Growatt and Deye are IP65), heat tolerance to 45°C without derating, and a 10-year standard warranty. Single-phase models for 3–6 kW, three-phase from 5 kW upward.

SH hybrid series (3.6–10 kW residential). Sungrow’s hybrid line with high-voltage battery integration. Targets buyers who want a premium hybrid stack with Sungrow’s own battery options or BYD HVS / HVM packs.

SG-CX commercial (15–110 kW, three-phase). Workhorse of Sungrow’s commercial range. SG33CX, SG50CX, SG110CX are the common models for 25–100 kW factory rooftops. Same 10-year warranty, IP66, and a denser MPPT count than Growatt MAX.

Where Sungrow wins. Highest efficiency, longest warranty, best heat performance, most rugged enclosure. The choice when project lifetime matters more than upfront cost — commercial rooftops, EPC O&M contracts, high-ambient sites. Field reliability data from Indian commercial installations consistently shows lower failure rates than the other two brands.

Where Sungrow loses. Price is 35–60% higher than Growatt for equivalent kW ratings. Hybrid range is more expensive than Deye for the same battery capability. The premium is not justified for short-payback PM Suryaghar residential projects under 5 kW. Installer pool is smaller — fewer EPC partners are trained on Sungrow than on Growatt.

Feature Matrix and Pricing Comparison Across kW Ratings

This is the head-to-head buyers actually want. All prices are Heaven Green Energy procurement data from Q2 2026 and include the inverter unit only — not balance of system, panels, or installation.

Specification	Growatt MIN 5000TL-X	Deye SUN-5K-SG04LP1	Sungrow SG5.0RS
Type	Grid-tie string	Hybrid string	Grid-tie string
Rated power	5 kW	5 kW	5 kW
Peak efficiency	97.5%	97.8%	98.4%
Number of MPPTs	2	2	2
Max input voltage	550 V	500 V	600 V
Output phase	Single	Single	Single
Battery-ready	No (MIN), Yes (SPH)	Yes — native	No (SG), Yes (SH)
IP rating	IP65	IP65	IP66
Heat derating threshold	40°C	42°C	45°C
Standard warranty	5 years	5 years	10 years
Wi-Fi monitoring	Optional dongle	Built-in (Solarman)	Built-in (iSolarCloud)
BIS certified	Yes	Yes	Yes
ALMM listed	Yes	Yes	Yes

Pricing Across 3 kW, 5 kW, and 10 kW

System size	Growatt	Deye	Sungrow
3 kW string inverter	₹22,000–₹26,000	₹28,000–₹32,000	₹38,000–₹44,000
5 kW string inverter	₹35,000–₹40,000	₹40,000–₹45,000	₹55,000–₹65,000
10 kW string inverter	₹65,000–₹75,000	₹78,000–₹88,000	₹1,05,000–₹1,20,000

Source: Heaven Green Energy procurement, Q2 2026. Prices vary by dealer, region, and quantity. EPC project pricing for 10+ units differs from single-unit residential.

Warranty and Support Comparison

Element	Growatt	Deye	Sungrow
Standard warranty	5 years	5 years	10 years
Extended warranty (paid)	Up to 10 years	Up to 10 years	Up to 25 years
Mean response time on claim	3–5 days	5–7 days	4–6 days
Field service centres (cities)	35+	18+	25+
Spare parts availability	Strong	Moderate	Strong
App / portal	ShinePhone	Solarman	iSolarCloud

India Service Network

City tier	Growatt	Deye	Sungrow
Tier-1 (Mumbai, Delhi, Bengaluru, Chennai, Kolkata, Hyderabad, Ahmedabad, Pune)	All present	All present	All present
Tier-2 (Surat, Vadodara, Jaipur, Lucknow, Indore, Coimbatore, Visakhapatnam, Bhubaneswar)	Most present	Selected	Most present
Tier-3 (Rajkot, Bhavnagar, Nashik, Mysuru, Madurai, Salem, Vijayawada)	Strong	Limited	Selected
Rural / district HQ	Through EPC partners	Through EPC partners	Through EPC partners

When Each Brand Fits Best — Use-Case Matchups

The three brands sort cleanly along the price-and-purpose axis. Match the site to the brand using the pros/cons grid below, then confirm with the verdict.

Verdict. Growatt wins when project payback is the priority and the site has a stable grid and moderate ambient. Deye wins when battery backup is mandatory — frequent outages, unreliable DISCOM supply, or a planned LFP pack. Sungrow wins when project lifetime, heat resistance, and warranty matter more than capex — commercial rooftops above 10 kW, high-ambient sites in Rajasthan and Gujarat, and any installation with a 20-year O&M contract attached.

For a broader industry view including Indian manufacturers, see our top solar inverter companies India overview.

Common Inverter Selection Mistakes Buyers Make

Six recurring mistakes account for most of the regret we hear from buyers who picked the wrong brand. Each is preventable with a 15-minute check before signing the quote.

1. 1
   Picking the cheapest inverter for a 48°C rooftop. Growatt MIN works in Pune (35°C summer ambient). It loses 6–8% generation in May–June on a Jodhpur rooftop hitting 48°C. The Sungrow premium pays back in two to three summers for high-ambient sites.
2. 2
   Buying a hybrid Deye for pure grid-tie use. If you have no battery and no plan to add one, a Deye SUN-K is over-specified. You pay 15–20% extra for hybrid hardware that sits idle. Pick Growatt MIN or Sungrow SG instead.
3. 3
   Skipping the BIS certificate verification. Grey-market Chinese units look identical to authorised stock but fail DISCOM inspection. Always verify the BIS certificate number against the [bis.gov.in](https://bis.gov.in/) register before the inverter is mounted on the roof.
4. 4
   Choosing a single-MPPT inverter for a multi-orientation roof. If your panels face two different directions (east and west, or south and west), you need two MPPTs. A single-MPPT inverter clips generation by 15–20%. All three brands offer dual-MPPT in their 5 kW residential range — confirm on the spec sheet.
5. 5
   Ignoring service centre distance. An inverter failure means zero generation until it is fixed. Before signing, check the closest authorised service centre for the brand you are picking. Growatt has the densest network; Deye the sparsest. In tier-3 cities, Deye claims can take 7–10 days.
6. 6
   Comparing only peak efficiency, not weighted efficiency. Peak efficiency is the headline number; European weighted efficiency is what actually shows up in annual generation. Sungrow's gap over Growatt at peak is 0.9%, but the weighted-efficiency gap across an Indian generation profile is 0.6%. Either number is small relative to the price gap.

How Heaven Green Energy Recommends Inverters

We do not sell a single brand. Heaven Green Energy installs Growatt, Deye, and Sungrow depending on the site, the bill, the battery plan, and the budget. Our recommendation process is the same six-factor scorecard described above, applied to the specific quote in front of you.

For PM Suryaghar 3–5 kW residential projects on a stable DISCOM grid (UGVCL, DGVCL, MGVCL, MSEDCL, BESCOM, TANGEDCO), we typically specify Growatt MIN-X. The payback math wins. The ₹5,000–₹8,000 saved on the inverter relative to Sungrow is real cash back to the customer, and the wide service network reduces downtime risk.

For residential rooftops in load-shedding-prone areas, or where the customer wants LFP battery backup from day one, we specify Deye SUN-K hybrid. The integrated battery management and seamless backup transfer is worth the 10–15% premium over Growatt grid-tie, particularly when the alternative is buying a separate battery inverter later.

For commercial rooftops above 10 kW, EPC projects with O&M attached, and any high-ambient site (Rajasthan, Kutch, interior Tamil Nadu), we specify Sungrow SG or SG-CX. The 10-year standard warranty, IP66 enclosure, and 45°C heat tolerance pay back over the project lifetime through higher generation and lower failure-related downtime.

Explore the services that match your project:

• Solar inverters — full range — Growatt, Deye, Sungrow, and additional BIS-certified brands with India warranty.
• Residential Solar — 1–10 kW with PM Suryaghar subsidy handled end-to-end.
• Commercial Solar — 10–500 kW with custom ROI modelling and accelerated depreciation planning.
• Solar Calculator — sizing and savings estimate in 60 seconds.
• Contact our team — request a brand-neutral quote with options across all three.

For a complete framework on inverter selection beyond brand choice, read how to choose the best solar inverter for your home. If you are still narrowing down between Indian and Chinese brands, our Luminous vs Microtek comparison covers the home-battery side.

Frequently Asked Questions

Which is the best inverter brand among Growatt, Deye, and Sungrow for an Indian home in 2026?

There is no single best brand — each wins a different use case. Growatt is the best price-to-performance pick for a 3–5 kW PM Suryaghar grid-tie installation on a stable DISCOM grid. Deye is best when battery backup is part of the system or a lithium pack is planned within two years. Sungrow is best for premium installations, commercial rooftops, and any site with summer ambient above 45°C. All three are BIS-certified, ALMM-listed, and qualify for the ₹78,000 PM Suryaghar subsidy.

How much does a 5 kW Growatt, Deye, or Sungrow inverter cost in India?

A 5 kW Growatt MIN 5000TL-X costs ₹35,000–₹40,000. A 5 kW Deye SUN-5K-SG04LP1 hybrid costs ₹40,000–₹45,000. A 5 kW Sungrow SG5.0RS costs ₹55,000–₹65,000. These are inverter-only prices from Heaven Green Energy procurement data, Q2 2026. Installed system pricing including panels, balance of system, and labour ranges from ₹2.6 lakh to ₹3.2 lakh for a 5 kW PM Suryaghar residential system depending on which inverter is chosen.

Is Sungrow worth the 35–60% premium over Growatt in India?

For residential projects under 5 kW with a payback target under 4 years, the Sungrow premium is hard to justify on pure capex math — Growatt with its 5-year warranty wins. For commercial rooftops above 10 kW, EPC contracts with O&M tails, and any installation with summer ambient over 45°C, Sungrow’s 10-year warranty, 98.4% efficiency, IP66 enclosure, and 45°C heat tolerance pay back over the 25-year project lifetime through higher generation and lower failure-related downtime.

Does Deye work with Indian lithium batteries like Pylontech and Dyness?

Yes. Deye SUN-K hybrid inverters communicate with most Indian-supplied LFP packs over the CAN bus — including Pylontech, BYD, Dyness, and the major OEM-rebranded Indian batteries. Compatibility lists are published by Deye and updated quarterly. Always confirm the specific battery model against the latest Deye compatibility document before purchase; firmware updates sometimes add new battery models. CAN bus communication enables full BMS data — state of charge, cell voltages, temperature — to feed back to the Solarman app.

Can I use Growatt, Deye, or Sungrow for PM Suryaghar subsidy applications?

Yes. All three brands are listed on the current ALMM register maintained by MNRE and hold valid BIS certificates against IS 16221 (Part 2) and IEC 61727 standards. They qualify for PM Suryaghar subsidy installations and pass DISCOM net metering inspections nationwide. Always verify the specific model number on the latest ALMM list before installation — the list is updated periodically and not every model in a brand’s range is included at all times.

What is the difference in warranty between the three brands?

Growatt and Deye both offer a 5-year standard warranty on residential models, extendable to 10 years for a paid premium of roughly ₹3,000–₹5,000. Sungrow offers a 10-year standard warranty on residential SG and SH ranges with paid extension up to 25 years. For commercial models — Growatt MAX, Deye commercial SUN-K, Sungrow SG-CX — standard warranties run 5 years across all three, with extension options. Warranty covers manufacturing defects; it excludes lightning damage, incorrect installation, and grid abnormality damage.

Which brand has the best after-sales service network in India?

Growatt has the widest service network with authorised support partners in 35+ cities, including all tier-2 markets and many tier-3 cities. Sungrow has 25+ cities with engineers trained on the full SG and SH range. Deye has 18+ cities — strong in tier-1 markets but limited in tier-3. Mean response time on a warranty claim is 3–5 days for Growatt, 4–6 days for Sungrow, and 5–7 days for Deye. For sites in remote locations, factor the service distance into the decision.

Are Growatt, Deye, and Sungrow inverters made in India or imported from China?

All three brands manufacture primarily in China but maintain Indian assembly, R&D, and service operations. Growatt has an India assembly operation in Bengaluru; Sungrow operates an Indian subsidiary with technical and commercial offices in Pune and Bengaluru; Deye distributes through its India authorised partner network with technical support in Mumbai and Delhi. The BIS certificate covers the specific manufacturing line — whether China-built or India-assembled, the BIS-stamped serial number is what DISCOM inspectors check.