back to panels

Global Tier-1

TOPBiHiKu6 66TB

635–670 W · 66-cell · N-type TOPCon · Bifacial · Dual-glass

Canadian SolarReleased 2022

70/ 100

Very good

Global

24.8% Efficiency15+ Yrs Field-ProvenBifacialGlass-Glass

The verdict. In our Global Tier-1 class, Canadian Solar TOPBiHiKu6 66TB leads on sustainability.

16thof 66 in Global Tier-1Top quarterclass average 63.6
Compare this panel →Ask Watt →

The assessment

How it scores, by category

Architecture & Design72
Efficiency & Yield69
Durability (verified)65
Performance & Degradation73
Guarantee & Backbone70
Sustainability81

Market position

16thof 66 in Global Tier-1Top quarter
457076

Our reading

TOPBiHiKu6 66TB scores 70, placing 16 of 66 in the Global Tier-1 class against a class average of 63.6. Its strongest scoring dimension is sustainability (81), running 22.0 points above the class average on this dimension. Underlying specifications include a module efficiency of 24.8%, N-type TOPCon cell technology, 12-year product warranty backed by a 30-year performance term.

The data

Power
670W
Efficiency
24.8%
Cell
N-type TOPCon
Temp coeff
-0.29%/°C
Technology architecture

N-type TOPCon module

Architecture guide

Produces DC electricity at the roof. It contains no system-level power conversion or storage.

Product role
None in the module.
Published range
635–670 W
Electrical layer
DC module output
Construction
Bifacial, Dual-glass
Architecture describes the product boundary. It is not a system design or an equipment-pairing decision.

Performance guarantee: 30-year linear output

670 Wrated586W at yr 30
80859095100Guaranteed floor 87.4%Product 12yr87.4%0yr5yr10yr15yr20yr25yr30yr
Projected outputGuaranteed floor: 87.4% at yr 30Product warranty ends yr 12

Wattage figure based on the sourced rated power (670 W) applied to the guaranteed floor; modular/format differences aside, this is the same rated-power spec shown above.

Modelled effective output, year by year

603W545W

Year 1 to year 25, at 30°C and 1000 W/m². Rated 670 W at STC.

How this is modelled

Compounds this panel’s own published first-year (1%) and annual (0.4%/yr) degradation figures against its 670 W rated (STC) output, then derates for the ambient and irradiance selected. Output is scaled roughly linearly with irradiance (1000 W/m² against the 1000 W/m² STC reference). This is the dominant real-world effect at low light, whether from cloud, shading or soiling. Output is then further derated for heat, from this panel’s own NOCT (41°C) and temperature coefficient (-0.29%/°C), giving an estimated cell temperature of 56°C at that ambient and irradiance. A datasheet-derived estimate, not a field measurement or a warranty guarantee: it does not account for this panel’s own low-light efficiency response (a separate, less-consistently-published spec), or for wind and system design. See NOCT and temperature coefficient in the glossary.

Control panel

30°C
1000 W/m²
Year1510152025
Watts603 W593 W581 W569 W557 W545 W
% of rated90.0%88.6%86.8%84.9%83.1%81.3%
Before you buy
Local positionUse a market view to check local availability, approvals and warranty scope.
Ask the installerWill the quote name the exact TOPBiHiKu6 66TB model and wattage, and who covers labour if the module warranty is used?

Verification & sources

Market context

Global evidencechange in the site menu

Global benchmark. This scorecard is benchmarked globally. A global score does not imply local availability, certification, warranty coverage, or installer compatibility.

Benchmark anchor. The score is anchored to the highest published Australian rating in this exact series. Scored model: CS6.2-66TB-670 · checked 2026-08-06. Evidence.

Sources & references · checked 2026-09-01

Strong evidence coverage

28 of 28 scored criteria link directly to a published source.

Values marked estimated, derived, or not found remain visible on the audit sheet and do not carry the same evidential weight as a linked source. Coverage measures direct links, not an independent guarantee that a claim is correct.

How far the evidence reaches

3 of 5 questions with rows in the rings reach beyond manufacturer claim; none is measured by review.solar.123456
  1. OutputThird-party source1 of 6 rows in the rings beyond claim4 warranty terms beside the rings
  2. EnduranceThird-party source5 of 8 rows in the rings beyond claim
  3. SafetyNot assessed for panels
  4. BackingThird-party source1 of 2 rows in the rings beyond claim3 warranty terms beside the rings
  5. FitManufacturer claim1 row in the rings2 design facts beside the rings
  6. FootprintManufacturer claim2 rows in the rings

Rings, outside in: manufacturer claim, certified or regulator-listed, third-party source. The centre is review.solar's own measurement, empty for every product today. Warranty terms and design facts that rest on the maker's own word are counted beside the rings; a reviewed absence, or one that reaches beyond the maker's claim, stays in them. How the evidence puzzle works

Record revision. Exact Australian CS6.2-66TB V1.4C3 sheet reviewed August 2026; regional catalogues reviewed September. EPD scope integrated 2026-10-04 from MR-EPDITALY0105 / UL 4791546441.101.2: the unsuffixed family covers 570–670 W, but its model uses a 630 W reference and Italian lifecycle assumptions. The published result is per kWh of electricity, not a certified below-400 kg CO₂/kWp manufacturing footprint. Four Chinese production sites are modelled; exact Australian supply/BOM and Thailand applicability remain unestablished. No conversion to manufacturing intensity, Australian field yield or adjacent HJT evidence is applied. Approval, sale and warranty evidence were not refreshed.

Change ledger

Product record history

2 changes to this record · 5 products changed in this update
  1. Record updated

    AU Warranty scope

    Before
    Australia and New Zealand; TopBiHiKu warranty V1.9 explicitly includes CS6.2-66TB, with 12-year product and 30-year power cover at 99% after year 1, 0.4% annual degradation and 87.4% at year 30.
    After
    Australia and New Zealand, for products sold to and installed there under sales contracts or purchase orders signed on or after 30 June 2026. TopBiHiKu warranty V1.9 (June 2026) names CS6.2-66TB-XXX (IEC1000V) and CS6.2-66TB-XXX (IEC1500V), where XXX is the rated output, with a 12-year product warranty and a 30-year performance warranty: front-side output at Standard Testing Conditions no less than 99% of labelled power in the first year, an annual decline no more than 0.4% from year 2 to year 30, and no less than 87.4% of labelled power at the end of year 30.
    AU market evidenceGuarantee assurance+3 in JSON record
  2. Record updated

    AU Certifications

    Before
    CS6.2-66TB-670 is in the current Australian approved-module export through 8 August 2028.
    After
    CS6.2-66TB-670 (IEC1500V) (IEC 61215-2021) is in the current Australian approved-module export through 8 August 2028. No IEC1000V CS6.2-66TB row appears in that export.
    AU market evidenceGuarantee assurance+3 in JSON record
5 changes to this record · 1 product changed in this update
  1. Record updated

    Sustainability pillar score

    Before
    100
    After
    80.8
    Primary datasheet
  2. Record updated

    Global score

    Before
    71.5
    After
    70.3
    Primary datasheet
  3. Record updated

    Carbon footprint / EPD

    Before
    EPD verified, <400 kg CO₂/kWp (certified low-carbon manufacturing)
    After
    EPD published (intensity disclosed, not low-carbon certified)
    Carbon footprint / EPDCarbon footprint / EPD+1 in JSON record
  4. Record updated

    Source revision

    Current text
    Exact Australian CS6.2-66TB V1.4C3 sheet reviewed August 2026; regional catalogues reviewed September. EPD scope integrated 2026-10-04 from MR-EPDITALY0105 / UL 4791546441.101.2: the unsuffixed family covers 570–670 W, but its model uses a 630 W reference and Italian lifecycle assumptions. The published result is per kWh of electricity, not a certified below-400 kg CO₂/kWp manufacturing footprint. Four Chinese production sites are modelled; exact Australian supply/BOM and Thailand applicability remain unestablished. No conversion to manufacturing intensity, Australian field yield or adjacent HJT evidence is applied. Approval, sale and warranty evidence were not refreshed.

    The previous text is not reproduced here: both versions run to a full research paragraph. Both are in the JSON record linked below.

    Primary datasheet
  5. Record updated

    Carbon footprint / EPD: Evidence sources

    Before
    https://www.prnewswire.com/news-releases/canadian-solar-obtains-european-ecs-and-epd-environmental-certifications-for-its-high-efficiency-solar-modules-301667269.html
    After
    https://www.epditaly.it/en/epd/mono-facial-and-bi-facial-mono-crystalline-silicon-photovoltaic-pv-modules/; https://www.epditaly.it/en/wp-content/uploads/2016/12/MR-EPDITALY0105-1.pdf
    Carbon footprint / EPDCarbon footprint / EPD+1 in JSON record
9 changes to this record · 152 products changed in this update
  1. Evidence added

    DE Evidence sources

    Before
    Not previously recorded
    After
    https://static.csisolar.com/wp-content/uploads/2019/12/20160520/CSI_Module_Type_and_Power_Class_Index_EN.pdf; https://www.csisolar.com/de/
    DE market evidenceUS market evidence
  2. Evidence added

    DE Support Note

    Before
    Not previously recorded
    After
    csisolar.com/de/ returns the same global homepage as csisolar.com. The module index names CS6.2-66TB as a global type, not a German sale path. CS6.3-66TB is a different type and is not transferred.
    DE market evidenceUS market evidence
  3. Record updated

    Source revision

    Before
    TOPBiHiKu6 CS6.2-66TB exact Australian V1.4C3 sheet rechecked 2026-08-23; fire classification linked and unsupported MBB detail withheld while AU status remains available.
    After
    TOPBiHiKu6 CS6.2-66TB exact Australian V1.4C3 sheet rechecked 2026-08-23; fire classification linked and unsupported MBB detail withheld while AU status remains available. First-market US and DE overlay review 2026-09-01: official regional catalogues recorded; Australian overlays and scores unchanged.
    Primary datasheet
  4. Evidence added

    DE Status

    Before
    Not previously recorded
    After
    unavailable
    DE market evidenceUS market evidence
  5. Evidence added

    DE Certifications

    Before
    Not previously recorded
    After
    DE market evidenceUS market evidence
  6. Evidence added

    US Support Note

    Before
    Not previously recorded
    After
    csisolar.com/us/ returns the same global homepage as csisolar.com. The module index names CS6.2-66TB / TOPBiHiKu6 as a global type, not a United States sale path. CS6.3-66TB is a different type and is not transferred.
    US market evidenceUS market evidence
  7. Evidence added

    US Certifications

    Before
    Not previously recorded
    After
    US market evidenceUS market evidence
  8. Evidence added

    US Evidence sources

    Before
    Not previously recorded
    After
    https://static.csisolar.com/wp-content/uploads/2019/12/20160520/CSI_Module_Type_and_Power_Class_Index_EN.pdf; https://www.csisolar.com/us/
    US market evidenceUS market evidence
  9. Evidence added

    US Status

    Before
    Not previously recorded
    After
    unavailable
    US market evidenceUS market evidence
2 changes to this record · 109 products changed in this update
  1. Record updated

    Efficiency & Yield pillar score

    Before
    72.4
    After
    69
    Primary datasheet
  2. Record updated

    Global score

    Before
    72.2
    After
    71.5
    Primary datasheet
1 change to this record · 118 products changed in this update
  1. Record updated

    Independent energy yield: Evidence sources

    Before
    https://scorecard.pvel.com/top-performers/
    After
    https://scorecard.pvel.com/methodology/; https://scorecard.pvel.com/top-performers/
    Independent energy yieldIndependent energy yield
7 changes to this record · 34 products changed in this update
  1. Record updated

    Global score

    Before
    74
    After
    72.2
    Primary datasheet
  2. Record updated

    Source revision

    Before
    Canadian Solar CEC AU CS6.2-66TB V1.4C3 and TopBiHiKu AU warranty V1.9 reviewed 2026-08-06 Re-verification 2026-08-18: PID and ammonia resistance recorded from the Clean Energy Council enhanced listing for exact model CS6.2-66TB-670, matched on exact model identity rather than brand or series. Salt mist is also enhanced-listed for this model but the rubric bands salt mist by severity and the regulator publishes none, so it remains unset. Re-verification 2026-08-18: salt mist recorded as certified without published severity from the Clean Energy Council enhanced listing for exact model CS6.2-66TB-670, under panel rubric v2.11.0 which added that band. LeTID re-verified 2026-08-19 for rubric v2.12.0: scored under the returned criterion on the evidence recorded in its provenance. Re-verification 2026-08-19: Verified reliability recorded as "Brand or series independently tested; exact model not covered" under panel rubric v2.13.0, which added a band for brand or series evidence where the exact model is not covered by the third-party record. Re-verification 2026-08-20: Independent energy yield recorded as brand-or-series under panel rubric v2.14.0, which applied to this criterion the same exact-model rule v2.13.0 applied to Verified reliability.
    After
    TOPBiHiKu6 CS6.2-66TB exact Australian V1.4C3 sheet rechecked 2026-08-23; fire classification linked and unsupported MBB detail withheld while AU status remains available.
    Primary datasheet
  3. Evidence removed

    Contact: Evidence sources

    Before
    After
    No longer recorded
    No direct source binding recorded
  4. Evidence removed

    Contact

    Before
    MBB Wire front contact
    After
    No longer recorded
    No direct source binding recorded
  5. Evidence removed

    Contact: Evidence status

    Before
    sourced
    After
    No longer recorded
    No direct source binding recorded
  6. Record updated

    Fire classification (IEC 61730): Evidence sources

    Before
    After
    https://static.csisolar.com/wp-content/uploads/sites/2/2025/08/08133238/CEC-AU-TOPBiHiKu6_CS6.2-66TB_v1.4C3_AU.pdf
    Fire classification (IEC 61730)
  7. Record updated

    Architecture & Design pillar score

    Before
    81.8
    After
    72.4
    Primary datasheet
7 changes to this record · 65 products changed in this update
  1. Record updated

    Durability (verified) pillar score

    Before
    63.9
    After
    64.7
    Primary datasheet
  2. Record updated

    Source revision

    Current text
    Canadian Solar CEC AU CS6.2-66TB V1.4C3 and TopBiHiKu AU warranty V1.9 reviewed 2026-08-06 Re-verification 2026-08-18: PID and ammonia resistance recorded from the Clean Energy Council enhanced listing for exact model CS6.2-66TB-670, matched on exact model identity rather than brand or series. Salt mist is also enhanced-listed for this model but the rubric bands salt mist by severity and the regulator publishes none, so it remains unset. Re-verification 2026-08-18: salt mist recorded as certified without published severity from the Clean Energy Council enhanced listing for exact model CS6.2-66TB-670, under panel rubric v2.11.0 which added that band. LeTID re-verified 2026-08-19 for rubric v2.12.0: scored under the returned criterion on the evidence recorded in its provenance. Re-verification 2026-08-19: Verified reliability recorded as "Brand or series independently tested; exact model not covered" under panel rubric v2.13.0, which added a band for brand or series evidence where the exact model is not covered by the third-party record. Re-verification 2026-08-20: Independent energy yield recorded as brand-or-series under panel rubric v2.14.0, which applied to this criterion the same exact-model rule v2.13.0 applied to Verified reliability.

    The previous text is not reproduced here: both versions run to a full research paragraph. Both are in the JSON record linked below.

    Primary datasheet
  3. Record updated

    Efficiency & Yield pillar score

    Before
    79.1
    After
    72.4
    Primary datasheet
  4. Record updated

    Global score

    Before
    75.1
    After
    74
    Primary datasheet
  5. Record updated

    Independent energy yield

    Before
    Field/PAN energy-yield validated
    After
    Brand or series yield-tested; exact model not covered
    Independent energy yield
  6. Record updated

    Rating

    Before
    Superior
    After
    Very good
    Primary datasheet
  7. Record updated

    Name Rating

    Before
    Superior
    After
    Very Good
    Primary datasheet
4 changes to this record · 31 products changed in this update
  1. Record updated

    Source revision

    Current text
    Canadian Solar CEC AU CS6.2-66TB V1.4C3 and TopBiHiKu AU warranty V1.9 reviewed 2026-08-06 Re-verification 2026-08-18: PID and ammonia resistance recorded from the Clean Energy Council enhanced listing for exact model CS6.2-66TB-670, matched on exact model identity rather than brand or series. Salt mist is also enhanced-listed for this model but the rubric bands salt mist by severity and the regulator publishes none, so it remains unset. Re-verification 2026-08-18: salt mist recorded as certified without published severity from the Clean Energy Council enhanced listing for exact model CS6.2-66TB-670, under panel rubric v2.11.0 which added that band. LeTID re-verified 2026-08-19 for rubric v2.12.0: scored under the returned criterion on the evidence recorded in its provenance. Re-verification 2026-08-19: Verified reliability recorded as "Brand or series independently tested; exact model not covered" under panel rubric v2.13.0, which added a band for brand or series evidence where the exact model is not covered by the third-party record.

    The previous text is not reproduced here: both versions run to a full research paragraph. Both are in the JSON record linked below.

    Primary datasheet
  2. Record updated

    Global score

    Before
    78.6
    After
    75.1
    Primary datasheet
  3. Record updated

    Verified reliability

    Before
    Top Performer (multi-year)
    After
    Brand or series independently tested; exact model not covered
    Verified reliability
  4. Record updated

    Durability (verified) pillar score

    Before
    79
    After
    63.9
    Primary datasheet
5 changes to this record · 23 products changed in this update
  1. Record updated

    Source revision

    Current text
    Canadian Solar CEC AU CS6.2-66TB V1.4C3 and TopBiHiKu AU warranty V1.9 reviewed 2026-08-06 Re-verification 2026-08-18: PID and ammonia resistance recorded from the Clean Energy Council enhanced listing for exact model CS6.2-66TB-670, matched on exact model identity rather than brand or series. Salt mist is also enhanced-listed for this model but the rubric bands salt mist by severity and the regulator publishes none, so it remains unset. Re-verification 2026-08-18: salt mist recorded as certified without published severity from the Clean Energy Council enhanced listing for exact model CS6.2-66TB-670, under panel rubric v2.11.0 which added that band. LeTID re-verified 2026-08-19 for rubric v2.12.0: scored under the returned criterion on the evidence recorded in its provenance.

    The previous text is not reproduced here: both versions run to a full research paragraph. Both are in the JSON record linked below.

    Primary datasheet
  2. Evidence added

    LeTID resistance (IEC TS 63342): Evidence sources

    Before
    Not previously recorded
    After
    https://cleanenergycouncil.org.au/api/PvModule/get
    LeTID resistance (IEC TS 63342)
  3. Evidence added

    LeTID resistance (IEC TS 63342)

    Before
    Not previously recorded
    After
    Independently tested / certified, figure not published
    LeTID resistance (IEC TS 63342)
  4. Record updated

    Durability (verified) pillar score

    Before
    79.2
    After
    79
    Primary datasheet
  5. Evidence added

    LeTID resistance (IEC TS 63342): Evidence status

    Before
    Not previously recorded
    After
    sourced
    LeTID resistance (IEC TS 63342)
2 changes to this record · 15 products changed in this update
  1. Record updated

    Ammonia resistance (IEC 62716): Evidence sources

    Before
    After
    https://cleanenergycouncil.org.au/api/PvModule/get; https://cleanenergycouncil.org.au/industry-programs/products-program
    Ammonia resistance (IEC 62716)Ammonia resistance (IEC 62716)
  2. Record updated

    Ammonia resistance (IEC 62716): Evidence status

    Before
    derived
    After
    sourced
    Ammonia resistance (IEC 62716)Ammonia resistance (IEC 62716)
5 changes to this record · 19 products changed in this update
  1. Record updated

    Salt mist (IEC 61701)

    Before
    Not Listed
    After
    Certified (IEC 61701), severity not published
    Salt mist (IEC 61701)
  2. Record updated

    Source revision

    Current text
    Canadian Solar CEC AU CS6.2-66TB V1.4C3 and TopBiHiKu AU warranty V1.9 reviewed 2026-08-06 Re-verification 2026-08-18: PID and ammonia resistance recorded from the Clean Energy Council enhanced listing for exact model CS6.2-66TB-670, matched on exact model identity rather than brand or series. Salt mist is also enhanced-listed for this model but the rubric bands salt mist by severity and the regulator publishes none, so it remains unset. Re-verification 2026-08-18: salt mist recorded as certified without published severity from the Clean Energy Council enhanced listing for exact model CS6.2-66TB-670, under panel rubric v2.11.0 which added that band.

    The previous text is not reproduced here: both versions run to a full research paragraph. Both are in the JSON record linked below.

    Primary datasheet
  3. Record updated

    Global score

    Before
    77.9
    After
    78.6
    Primary datasheet
  4. Record updated

    Durability (verified) pillar score

    Before
    75.9
    After
    79.2
    Primary datasheet
  5. Record updated

    Salt mist (IEC 61701): Evidence sources

    Before
    After
    https://cleanenergycouncil.org.au/industry/products/modules
    Salt mist (IEC 61701)
8 changes to this record · 106 products changed in this update
  1. Evidence removed

    Damp heat extended (2000h): Evidence status

    Before
    derived
    After
    No longer recorded
    No direct source binding recorded
  2. Evidence removed

    Awards: Evidence status

    Before
    reviewed_absence
    After
    No longer recorded
    NOCT (C)
  3. Record updated

    Architecture & Design pillar score

    Before
    76.7
    After
    81.8
    Primary datasheet
  4. Evidence removed

    Damp heat extended (2000h): Evidence sources

    Before
    After
    No longer recorded
    No direct source binding recorded
  5. Record updated

    Global score

    Before
    76.9
    After
    77.9
    Primary datasheet
  6. Evidence removed

    Awards

    Before
    Not Listed
    After
    No longer recorded
    NOCT (C)
  7. Evidence removed

    Awards: Evidence sources

    Before
    https://static.csisolar.com/wp-content/uploads/2022/09/04143133/CS-Datasheet-TOPBiHiKu6_CS6.2-66TB_v1.2_EN.pdf
    After
    No longer recorded
    NOCT (C)
  8. Evidence removed

    Damp heat extended (2000h)

    Before
    1000h IEC 61215 standard
    After
    No longer recorded
    No direct source binding recorded
6 changes to this record · 17 products changed in this update
  1. Record updated

    PID (IEC TS 62804): Evidence sources

    Before
    After
    https://cleanenergycouncil.org.au/industry/products/modules
    PID (IEC TS 62804)
  2. Record updated

    PID (IEC TS 62804)

    Before
    Claimed, no test cited
    After
    Independently tested / certified
    PID (IEC TS 62804)
  3. Record updated

    Source revision

    Before
    Canadian Solar CEC AU CS6.2-66TB V1.4C3 and TopBiHiKu AU warranty V1.9 reviewed 2026-08-06
    After
    Canadian Solar CEC AU CS6.2-66TB V1.4C3 and TopBiHiKu AU warranty V1.9 reviewed 2026-08-06 Re-verification 2026-08-18: PID and ammonia resistance recorded from the Clean Energy Council enhanced listing for exact model CS6.2-66TB-670, matched on exact model identity rather than brand or series. Salt mist is also enhanced-listed for this model but the rubric bands salt mist by severity and the regulator publishes none, so it remains unset.
    Primary datasheet
  4. Record updated

    Ammonia resistance (IEC 62716)

    Before
    Not listed
    After
    IEC 62716 certified
    No direct source binding recorded
  5. Record updated

    Durability (verified) pillar score

    Before
    71.5
    After
    75.9
    Primary datasheet
  6. Record updated

    Global score

    Before
    75.9
    After
    76.9
    Primary datasheet

This is review.solar's publication history. It does not claim the product changed on the recorded date, and it excludes compatibility, system pairing, installation suitability and relative leaderboard prose. Open the complete JSON record.

Evidence timeline

Recorded verification events for this scorecard. These are evidence checks, not historical score snapshots.

  1. Core scorecard evidence checked
  2. US market evidence checked
  3. DE market evidence checked
  4. AU market evidence checked
  5. Series benchmark evidence checked
  6. Plain-language warranty summary checked

Evidence record (JSON)

Scored by Solar Analytica Research

Stay across the benchmark.

New scorecards, score changes and market signals, published as they happen.