Front presentation of the TCL Solar HSM-ND66-GK725 bifacial module
    HSM-ND66-GK725 · front view.
    TCL SolarBest Value

    TCL Solar TOPCon Bifacial 725 W Module

    Exact reference · HSM-ND66-GK725

    A high-output, large-format N-type TOPCon module for projects that can accommodate its 2.384 m by 1.303 m footprint, 38.2 kg handling weight and 17.57 A operating current.

    Rated output
    725 W

    Front-side output measured at standard test conditions; site energy is modelled separately.

    Module efficiency
    23.3%

    Useful where the module dimensions and handling plan suit the available array area.

    Operating point
    41.27 V · 17.57 A

    The inverter and parallel-string design must accept the resulting voltage and current.

    Module format
    2384 x 1303 mm · 38.2 kg

    Structure, access, lifting and installer handling require explicit planning.

    Rear-side response
    80% +/-5% bifaciality

    Additional production depends on actual rear irradiance and is not guaranteed by the nameplate.

    725 W and 23.3% are front-side STC ratings for HSM-ND66-GK725. Bifacial contribution depends on the actual mounting geometry, clearance, albedo and rear-side shading; ReneWave models it instead of adding a generic percentage.

    Pricing confirmed by quote

    The written quote confirms the exact reference, required accessories, compatibility, delivery and commercial terms.

    Availability confirmed in your written quote

    1

    01 · Product role

    What this product does in the system.

    This module turns sunlight into DC electricity at array level. Its 725 W rating is a front-side laboratory rating, not a promise of annual site production. ReneWave places the exact module into a string, mounting and protection design before it enters a written quotation.

    Relevant applications

    • Ground-mounted and large-scale photovoltaic arrays
    • Large commercial or industrial roofs after structural and access review
    • Agricultural structures and pumping arrays where rear-side irradiance is modelled

    Why ReneWave may shortlist it

    • 725 W front-side STC output can reduce the module count required for a target DC capacity.
    • 23.3% module efficiency uses available array area effectively when the large format fits.
    • Bifacial glass-glass construction permits separately modelled rear-side contribution.
    • The exact model has current EMEA datasheet, installation and large-scale warranty records.

    What changes in practice

    • The high wattage can reduce module count for a target array capacity, but the larger and heavier format requires a suitable structure and handling plan.
    • Its current is high enough that inverter input-current and parallel-string limits must be checked early.
    • Rear-side production is useful only where the mounting geometry and reflected irradiance support it.

    System position

    From sunlight to useful energy.

    String design, conversion equipment, protection and optional storage are confirmed for the complete project.

    The module supplies DC. Separate compatible conversion equipment serves the protected loads.

    Front-side sunlight and separately modelled rear irradiance reach a TCL G12-66P module string. The string supplies a designed DC isolation and protection path before a compatible inverter or MPPT conversion stage. The conversion stage supplies protected site loads. Optional battery storage connects only through a separately validated architecture after the conversion stage. The module supplies DC. Separate compatible conversion equipment serves the protected loads.Front + rear irradianceSite-modelled inputTCL G12-66P725 W · bifacial TOPConDC isolation and protectionSeparate DC equipmentCompatible inverter / MPPTExact limits verifiedProtected site loadsProtected site demandBattery storageOptional, validated separatelyFront-side sunlight and separately modelled rear irradiance reach a TCL G12-66P module string. The string supplies a designed DC isolation and protection path before a compatible inverter or MPPT conversion stage. The conversion stage supplies protected site loads. Optional battery storage connects only through a separately validated architecture after the conversion stage. The module supplies DC. Separate compatible conversion equipment serves the protected loads.Front + rear irradianceSite-modelled inputTCL G12-66P725 W · bifacial TOPConDC isolation and protectionSeparate DC equipmentCompatible inverter / MPPTExact limits verifiedProtected site loadsProtected site demandBattery storageOptional, validated separatelyFront-side sunlight and separately modelled rear irradiance reach a TCL G12-66P module string. The string supplies a designed DC isolation and protection path before a compatible inverter or MPPT conversion stage. The conversion stage supplies protected site loads. Optional battery storage connects only through a separately validated architecture after the conversion stage. The module supplies DC. Separate compatible conversion equipment serves the protected loads.Front + rear irradianceSite-modelled inputTCL G12-66P725 W · bifacial TOPConDC isolation and protectionSeparate DC equipmentCompatible inverter / MPPTExact limits verifiedProtected site loadsProtected site demandBattery storageOptional, validated separately

    IrradianceElectrical powerInactive / conditional

    Conceptual system position, not an installation drawing. Separate equipment and commissioning must be verified.

    Read the technical explanation

    Exact reference and intended role

    The HSM-ND66-GK725 is the 725 W member of TCL Solar's G12-66P T-Class family. It is a large-format bifacial glass-glass photovoltaic module intended for large arrays where the support structure, inverter inputs, cable routes and handling method are designed around the exact reference.

    Front-side rating and rear-side contribution

    The published 725 W and 23.3% values are measured from the front side at standard test conditions. The rear side can contribute additional energy, but that contribution changes with albedo, mounting height, tilt, row spacing and structural shading. It therefore belongs in the project energy model rather than in a generic sales uplift.

    What the complete design must resolve

    At maximum power the module operates at 41.27 V and 17.57 A. String length, cold open-circuit voltage, inverter current limits, parallel strings, connectors, protection and conductors must be resolved together. Its physical format and weight also require a planned lifting, clamp and structural approach.

    What remains in the record

    02 · Specifications

    Ratings, dimensions and practical consequence.

    Electrical ratings at front-side STC

    Nominal power

    725 W

    Module efficiency

    23.3%

    Maximum-power point

    41.27 V · 17.57 A

    Open circuit / short circuit

    49.36 V · 18.60 A

    Cold-voltage and current multipliers are applied during string and protection design.

    Power binning

    0 to +3%

    Maximum system voltage

    1500 V DC (IEC)

    Maximum series fuse

    35 A

    Construction and handling

    Cell technology

    N-type TOPCon · 132 half-cut cells

    Construction

    Framed bifacial glass-glass · 2.0 mm + 2.0 mm heat-strengthened glass

    Dimensions

    2384 x 1303 x 33 mm

    Weight

    38.2 kg

    Junction box

    IP68 · 3 bypass diodes

    Connector

    Stäubli MC4-EVO2A

    Published test loads

    2400 Pa wind, front and back · 5400 Pa snow, front

    The approved mounting configuration and site design loads still control.

    Thermal and environmental record

    Operating temperature

    -40°C to +70°C under the current EMEA installation record

    Power temperature coefficient

    -0.28% / °C

    Voltage temperature coefficient

    -0.24% / °C

    Current temperature coefficient

    +0.045% / °C

    Protection / fire classification

    Protection Class II · exact delivered-model fire record required

    The current family datasheet and general EMEA installation record use different fire-class references, so the supplied market document and module label are checked before specification.

    Bifacial and warranty basis

    Power bifaciality

    80% +/-5%

    Rear-side gain

    Project-modelled

    Mounting height, tilt, albedo and structure shading determine usable gain.

    Product warranty

    15 years under the applicable large-scale warranty terms

    Linear power warranty

    30 years · 99% year 1 · 87.4% year 30

    03 · Confirm before quotation

    Four checks before this reference is quoted.

    ReneWave confirms the electrical context, connected equipment, installation conditions and configuration path before the exact reference enters a written quote.

    1. 01

      Array architecture

      Confirm orientation, shading, target DC capacity, string length, cold Voc and the number of parallel strings.

    2. 02

      Inverter and string limits

      Confirm MPPT voltage window, maximum input and short-circuit current, DC/AC ratio and approved connector path for the exact inverter.

    3. 03

      Structure and installation

      Verify handling access, clamp zones, structural loads, fire classification, ventilation, cable management, earthing and DC protection against the exact supplied record.

    4. 04

      Traceability and warranty

      Retain the approved datasheet, array/string plan, model and serial records, delivery evidence and applicable warranty document.

    04 · Documents & warranty

    Keep the exact reference traceable.

    Documents shown here support selection and handover. The accepted order and exact manufacturer warranty document control.

    Manufacturer warranty reference

    15-year limited product warranty and 30-year limited power warranty for the exact UPP reference

    • Published product coverage addresses qualifying defects in materials and workmanship under the applicable terms.
    • Published power coverage starts at 99% for year 1 and declines by 0.40% per year to 87.4% in year 30.
    • ReneWave retains the model, serial, purchase, delivery and installation evidence used to support an eligible claim.
    Customer Care

    05 · Complete the system

    Accessories and adjacent equipment, in one request.

    Select relevant companions now. ReneWave still verifies quantities and compatibility before they appear in the written quote.

    No additional equipment is published for this reference. Required accessories are confirmed during quotation.

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