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Sungrow and what the inverter bankability survey measures

Sungrow shipped around 143 GW of PV inverters in 2025, an estimated 30% of the world market, and ranked first in BloombergNEF's 2025 Inverter Bankability Survey for the sixth time. That survey rates the supplier on warranty backing, support, lead times and financial stability. It is a separate scheme from the BloombergNEF Tier 1 list, which rates PV modules, and we quote it exactly rather than stretching it.

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  • First in the 2025 inverter bankability survey
  • SG CX from 50 kW to 150 kW
  • Exact SKU pinned before we quote
  • 1997 Founded in Hefei China
  • About 143 GW PV inverters shipped in 2025 an estimated 30% of the world market
  • First, 2025 BloombergNEF Inverter Bankability Survey the sixth time at the top
  • 50 to 350 kW The commercial band we draw on

Sungrow is the volume and standing choice on our list, specified where a funder wants a supplier it already recognises and a roof wants tracker density at commercial power ratings.

Sungrow Power Supply Co., Ltd was founded in Hefei in 1997 and is now the largest PV inverter maker in the world by shipment volume. For commercial solar above 50 kWp it gives us a continuous three-phase string range on a 1100 V platform, from 50 kW up to 150 kW, and a 1500 V machine at 350 kW where the array is large ground-mount rather than a roof.

Most of the reason it reaches a specification is standing rather than hardware. It is the only brand on our inverter list with a live, citable bankability ranking, and that carries weight in a room with a funder in it. This page states the claim exactly, says what the survey does not cover, and then deals with the two things that actually catch people out on a Sungrow scheme: the model revisions, and where the export control physically sits.

01 Bankability

The survey Sungrow leads, and the one it has nothing to do with

Sungrow is the one maker on our inverter list with a current, citable bankability claim, and the credible thing to do with a strong claim is to state it precisely. It ranked first in BloombergNEF's 2025 Inverter Bankability Survey with 100% bankability recognition among the financiers, technical advisers and EPCs surveyed, the sixth time it has taken that position. The survey asks respondents whether they would accept the supplier's equipment in a financed project, which is a question about warranty backing, support, lead times and financial stability rather than about the hardware.

It is a different scheme from the BloombergNEF Tier 1 list. That one rates PV module manufacturers for lenders and does not extend to inverters at all, so no Sungrow inverter is described on this site as Tier 1, whatever its shipment volume. The financial position behind the survey result is straightforward: Sungrow reported total revenue of roughly CNY 89bn for 2025 with net profit up about 22%. Unlike two of the other inverter makers we specify, there is no going-concern caveat here to write.

  • About 143 GW PV inverters shipped in 2025 an estimated 30% of the world market
  • First, 2025 BloombergNEF Inverter Bankability Survey 100% recognition among respondents
  • CNY 89bn Reported total revenue, 2025 net profit up about 22%
  • 1997 Manufacturing since Hefei, China
02 The range

Two platforms, chosen by the DC voltage of the site

Inverters

Three-phase string inverters on 1100 V and 1500 V DC platforms

Commercial roofs that need a high MPP tracker count per machine and enclosures rated for exposed or coastal air, stepping up to a 1500 V platform where the array is large ground-mount rather than a roof.

  • SG50CX
  • SG75CX-P2
  • SG110CX
  • SG125CX-P2
  • SG350HX
  • SG125CX-P2: 125 kW, 12 MPPT, up to 98.5% peak efficiency, 1100 V DC, recommended PV input around 175 kW for high oversizing
  • SG110CX: 110 kW, 9 MPPT, up to 98.7% peak efficiency, 1100 V DC, Type II surge protection on the DC and AC sides
  • SG350HX: 350 kW, up to 16 MPPT, up to 99.01% peak efficiency, 1500 V DC, IP66
  • Enclosure: IP66 with C5 anti-corrosion across the SG CX range

Several designations carry a current -P2 revision that differs on tracker count and efficiency, so a family name alone is not enough to specify or price from.

Datasheet figures only. We publish no price, and the exact model is confirmed against the design and the current datasheet before order.

03 What the CX platform is built around

Three design choices, each deciding a different kind of site

The SG CX family is a narrow, deliberate range. These are the calls it makes, and each one points at a particular sort of roof or field.

Trackers, not averages

Nine trackers on the SG110CX and twelve on the SG125CX-P2 is a high count for the power rating. A roof broken across pitches, orientations and a shaded corner can be grouped so each run finds its own operating point instead of being pulled to one average.

Enclosures for bad air

IP66 with C5 anti-corrosion, and Type II surge protection on both the DC and AC sides. That is the specification for a coastal estate or an exposed ridge, where a lower-rated enclosure turns into a maintenance line within a few winters.

A step up, not a scale up

Above the roof band the SG350HX moves to a 1500 V DC architecture with up to 16 trackers. That cuts the number of machines, combiner boxes and AC runs across a large ground-mount array rather than repeating the rooftop design at size.

04 Two platforms

The DC voltage decides which family a site is on

  • 1100 V DC platform across the SG CX range 50 kW to 150 kW, roofs and small ground-mount
  • 1500 V DC platform on the SG350HX 350 kW, large ground-mount and utility arrays
  • Up to 99.01% Peak efficiency, SG350HX a later datasheet revision states up to 99.02%
05 Before we quote

How we pin a Sungrow specification down

  1. Model

    Establish the exact designation, P2 or not

    Several Sungrow models carry a current -P2 revision, and the revision is not cosmetic. Tracker counts and peak efficiency differ between generations, so we name the designation the distributor will actually supply rather than the family.

    At specification

  2. Datasheet

    Work from the issued sheet, not the product page

    Published figures drift between datasheet versions; the SG350HX is a live example, with a later revision quoting a slightly different peak efficiency. We take power, tracker count, efficiency and enclosure rating from the sheet issued for the SKU being quoted, and that is the sheet the design is checked against.

    With the design

  3. Warranty

    Verify the term against the purchasing channel

    Commercial documentation indicates a five-year baseline extendable to a total of twenty-five years, while some UK channels advertise ten years on specific SKUs. We confirm the issued warranty document for that model and that channel, then register it at commissioning so it runs from handover.

    Before contract

  4. Connection

    Set the export control where it actually sits

    A plant export limit is held at the data logger or the energy-management layer rather than at the inverter alone. We confirm that architecture against the connection conditions, commission to G99 and document the settings so the constraint can be audited later.

    At commissioning

07 Scale and service

Being the largest maker is not the same as being nearby

A 30% global share tells you the company will still exist when a warranty claim is made. It tells you nothing about how quickly a fault on your roof gets someone's attention, and those are separate questions that a bankability ranking does not separate for you.

The practical arrangement is that Sungrow has a UK entity issuing UK warranty documentation and the range is stocked through mainstream wholesalers, so parts and paperwork have a route that does not run through Hefei. Above that, we own the support relationship as the specifying and installing contractor: we hold the iSolarCloud access, run the warranty claim, handle the correspondence with the network operator and keep the as-built records a facilities team or a funder needs over the life of the asset.

The failure mode worth naming is queueing. A very large manufacturer prioritises its very large customers, and a single commercial roof is not one of them. That is an argument for the contractor holding the relationship rather than an argument against the brand, and it is the reason we confirm the purchasing channel, the current stock and the lead time for the specific SKU before we put a date on a programme.

Sungrow is the maker we test the others against on a large commercial roof. It is not automatically the right answer, and the reasons it is not are grid-side and procedural rather than financial.

08 Honest placement

Where Sungrow is the obvious answer, and where it is not

Specify

Where it fits

  • Financed schemes where a funder or technical adviser wants a supplier it already recognises
  • Roofs with several pitches and shading zones, where 9 to 12 trackers on one machine group the strings honestly
  • Coastal and exposed sites, where an IP66 enclosure with C5 anti-corrosion is the right specification
  • Large ground-mount, where one 1500 V SG350HX replaces a row of smaller machines and their AC runs
Specify something else

Where it does not

  • Connections needing export limitation enforced inside the inverter, because Sungrow holds it at the logger or EMS layer
  • Specifications carrying an EU-provenance requirement, which this range does not meet
  • Anyone specifying from a model family alone, because the -P2 revisions differ on tracker count and efficiency
  • Sites wanting storage behind the same unit, since this range is PV conversion rather than a hybrid
09 FAQ

Sungrow on a commercial roof: common questions

Yes, and it is the only brand in our inverter line-up with a current, citable claim to it. Sungrow ranked first in BloombergNEF's 2025 Inverter Bankability Survey with 100% bankability recognition among respondents, the sixth time it has taken the top position. That survey rates the inverter supplier on warranty backing, support, lead times and financial stability, which is precisely the question a funder is asking. We still confirm the warranty term and the current supplier standing for the exact model before any financed project, because a survey result is about the company and not about the box you are buying.

No, and the two are worth keeping apart. Sungrow is the largest PV inverter maker by shipment volume, around 143 GW in 2025 at roughly 30% global share, and it leads the BloombergNEF Inverter Bankability Survey. Neither of those makes it Tier 1, because the BloombergNEF Tier 1 list is a financeability scheme for PV module manufacturers and does not apply to inverters at all. So we cite the shipment scale and the inverter survey precisely, and we never label a Sungrow inverter Tier 1. Any supplier who does is either confused or hoping you are.

More than the name suggests. The -P2 designations are current revisions of existing models, and they can differ from the original on tracker count, peak efficiency and protection features. Specifying "an SG125CX" without the suffix is therefore not a specification, because the design work behind it depends on how many MPP trackers the machine actually has and how the strings are grouped across the roof.

We handle it by naming the exact designation the distributor will supply, taking every figure from the datasheet issued for that SKU, and re-checking it if the supply changes between design and order. It is a small piece of discipline that avoids a string layout being built around a tracker count the delivered machine does not have.

We lead with the SG CX three-phase string range on the 1100 V platform: the SG50CX at 50 kW with 5 trackers, the SG75CX-P2 at 75 kW with 8, the SG110CX at 110 kW with 9, and the SG125CX-P2 at 125 kW with 12, up to the SG150CX at the top of the commercial band. For large ground-mount and utility arrays we step to the 1500 V SG350HX at 350 kW with up to 16 trackers. The model, the count and the DC-to-AC ratio come from the PV*SOL design built off your survey rather than from a catalogue line.

The standard term varies by model and by UK purchasing channel, so we confirm it per project rather than quoting a blanket figure. Commercial documentation indicates a five-year baseline on the string range, extendable by paid extension to a total of twenty-five years, while some UK channels advertise ten years as standard on specific SKUs. We verify the issued warranty document for the exact model and the channel it is bought through before contract, then register and document it at commissioning so cover is active from handover. The same check catches which revision of the model is being supplied.

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Last updated August 2026

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The equipment is chosen to fit the design, not the other way round.

Tell us about the roof and the load. We survey the site, model the array in PV*SOL against your half-hourly data, and specify what actually fits, with the manufacturer, the series and the warranty named. Sungrow goes on the roof where it is the right answer and not because it is on a list.

  • On-site 3D drone survey and half-hourly PV*SOL model
  • We confirm your DNO and handle the G99 connection
  • Over 50 kWp, outside MCS