The assessment
How it scores, by category
Market position
The data
Solar module
Produces DC electricity at the roof. It contains no system-level power conversion or storage.
- Product role
- None in the module.
- Published range
- 720–725 W
- Electrical layer
- DC module output
- Construction
- Bifacial, Dual-glass
Performance guarantee: 30-year linear output
Wattage figure based on the sourced rated power (725 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
Year 1 to year 25. Rated 725 W at STC.
How this is modelled
Modelled from this panel’s own published first-year (1%) and annual (0.4%/yr) degradation figures, compounded against its 725 W rated (STC) output. This is a datasheet-derived estimate, not a field measurement or a warranty guarantee. Actual output also depends on site irradiance, temperature, soiling and system design.
| Year | 1 | 5 | 10 | 15 | 20 | 25 |
|---|---|---|---|---|---|---|
| Watts | 718 W | 706 W | 692 W | 677 W | 663 W | 648 W |
| % of rated | 99.0% | 97.4% | 95.4% | 93.4% | 91.4% | 89.4% |
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. Intersection of the datasheet (720-745 W) with the Australian approval (710-725 W). The datasheet's 730-745 W bins have no Australian pathway. Scored model: SG-66TG5B-725 · checked 2026-08-19. Evidence.
Sources & references · checked 2026-09-01
Strong evidence coverage
13 of 13 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.
Record revision. Built 2026-08-19 from Sungrow's own SG-66TG5B datasheet, retrieved from info-support.sungrowpower.com via the product page and verified complete: byte count matched the declared Content-Length exactly, with %PDF magic and a trailing %%EOF. Figures read from a render of the Specifications (STC) table; the sheet also carries a separate Specifications (BNPI) table at front 1000 W/m2 and rear 135 W/m2, which runs roughly 10 per cent higher, publishes no efficiency row, and is not used here. Retained scope is the intersection and it is materially narrower than the datasheet. The datasheet covers 720-745 W; the Australian approval covers 710-725 W across 4 models. Only 720 W and 725 W appear in both. The datasheet's headline 745 W at 24.0% is NOT an installable Australian product, and the scored 725 W bin publishes 23.3%. Australian warranty-terms recovery 2026-08-29: structured AU overlay terms recovered or held from the exact governing instrument. First-market US and DE overlay review 2026-09-01: official regional catalogues recorded; Australian overlays and scores unchanged.
- Sourced valuesData card →
- Archived copy of the primary sourcePDF ↗
Show 2 more
- Independent energy yieldIndependent test ↗
- Independent energy yieldIndependent test ↗
Product record history
9 changes to this record · 152 products changed in this update
US Support Note
- Before
- Not previously recorded
- After
- The Sungrow /en-us/ smart-module path for SG-66TG5B returns 404. The global /en/ page names family SG-66TG5B with a 725 W column. That is not the exact scored hyphenated SKU SG-66TG5B-725 and is not a United States catalogue.
US Evidence sources
- Before
- Not previously recorded
- After
- https://www.sungrowpower.com/en-us/sungrow-renewables-page/smart-modules/sg-66tg5b; https://www.sungrowpower.com/en/sungrow-renewables-page/smart-modules/sg-66tg5b
DE Evidence sources
- Before
- Not previously recorded
- After
- https://www.sungrowpower.com/de-de/sungrow-renewables-page/smart-modules/sg-66tg5b; https://www.sungrowpower.com/en/sungrow-renewables-page/smart-modules/sg-66tg5b
DE Support Note
- Before
- Not previously recorded
- After
- The Sungrow /de-de/ smart-module path for SG-66TG5B returns 404. A global English family page plus wattage column is not SG-66TG5B-725 and is not a German sale path. Sibling SG-48, SG-54 and SG-66 families stay unmerged.
Source revision
- Current text
- Built 2026-08-19 from Sungrow's own SG-66TG5B datasheet, retrieved from info-support.sungrowpower.com via the product page and verified complete: byte count matched the declared Content-Length exactly, with %PDF magic and a trailing %%EOF. Figures read from a render of the Specifications (STC) table; the sheet also carries a separate Specifications (BNPI) table at front 1000 W/m2 and rear 135 W/m2, which runs roughly 10 per cent higher, publishes no efficiency row, and is not used here. Retained scope is the intersection and it is materially narrower than the datasheet. The datasheet covers 720-745 W; the Australian approval covers 710-725 W across 4 models. Only 720 W and 725 W appear in both. The datasheet's headline 745 W at 24.0% is NOT an installable Australian product, and the scored 725 W bin publishes 23.3%. Australian warranty-terms recovery 2026-08-29: structured AU overlay terms recovered or held from the exact governing instrument. First-market US and DE overlay review 2026-09-01: official regional catalogues recorded; Australian overlays and scores unchanged.
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 changes to this record · 109 products changed in this update
3 changes to this record · 18 products changed in this update
AU Warranty scope
- Current text
- The datasheet states a 15-year product warranty and a 30-year linear power output warranty. Rechecked 29 August 2026: the Australian rooftop Sungrow Renewables instrument does not name SG-66TG5B. A separate official Sungrow Solar instrument names SG-66TG5B-XXX at 15 years, matching the datasheet duration but not uniquely established as the Australian governing instrument. Structured terms remain held.
The previous text is not reproduced here: both versions run to a full research paragraph. Both are in the JSON record linked below.
AU market evidenceAU market evidence+4 in JSON recordSource revision
- Current text
- Built 2026-08-19 from Sungrow's own SG-66TG5B datasheet, retrieved from info-support.sungrowpower.com via the product page and verified complete: byte count matched the declared Content-Length exactly, with %PDF magic and a trailing %%EOF. Figures read from a render of the Specifications (STC) table; the sheet also carries a separate Specifications (BNPI) table at front 1000 W/m2 and rear 135 W/m2, which runs roughly 10 per cent higher, publishes no efficiency row, and is not used here. Retained scope is the intersection and it is materially narrower than the datasheet. The datasheet covers 720-745 W; the Australian approval covers 710-725 W across 4 models. Only 720 W and 725 W appear in both. The datasheet's headline 745 W at 24.0% is NOT an installable Australian product, and the scored 725 W bin publishes 23.3%. Australian warranty-terms recovery 2026-08-29: structured AU overlay terms recovered or held from the exact governing instrument.
The previous text is not reproduced here: both versions run to a full research paragraph. Both are in the JSON record linked below.
Primary datasheetAU Evidence sources
- Before
- https://aus.sungrowpower.com/; https://cleanenergycouncil.org.au/industry/products/modules; https://info-support.sungrowpower.com/datasheet-material/5a09be09-35ce-416d-a495-a04efb3cb835.pdf; https://www.sungrowpower.com/en/sungrow-renewables-page/smart-modules/sg-66tg5b
- After
- https://aus.sungrowpower.com/; https://cleanenergycouncil.org.au/industry/products/modules; https://info-support.sungrowpower.com/datasheet-material/35144eb5-6e68-46b8-910a-6d5b8cc4260e.pdf; https://info-support.sungrowpower.com/datasheet-material/5a09be09-35ce-416d-a495-a04efb3cb835.pdf; https://solarjuice.com.au/wp-content/uploads/2025/06/Global-Limited-Warranty-Terms-and-Conditions-for-Photovoltaic-Modules-1.pdf; https://www.sungrowpower.com/en/sungrow-renewables-page/smart-modules/sg-66tg5b
2 changes to this record · 147 products changed in this update
Certification model
- Before
- Not previously recorded
- After
- SG-66TG5B-725 (IEC 61215-2021)
D05E08E6Ab97
- Before
- Not previously recorded
- After
- accepted at: 2026-08-29; category: module; certification model: SG-66TG5B-725 (IEC 61215-2021); jurisdiction: au_cec; match method: exact_normalized_single_record; product slug: sungrow-sg-66tg5b-720-725-au; source key: data/sungrow_sg66tg5b_au.json; source manufacturer name: SUNGROW RENEWABLES DEVELOPMENT CO LTD; validation: approved at: 2025-12-10; candidate model: SG-66TG5B-725 (IEC 61215-2021); data confidence: High; evidence url: https://cer.gov.au/document/cec-approved-pv-modules-0; expires at: 2028-12-10; list data version: au-cer-module-2026-08-20-4e04f9838af2; list retrieved at: 2026-08-27T04:30:12Z; listing status at validation: listed
5 changes to this record · 118 products changed in this update
Independent energy yield
- Before
- Not previously recorded
- After
- No public independent yield result found in reviewed sources
Independent energy yield: Evidence status
- Before
- Not previously recorded
- After
- reviewed_absence
Independent energy yield: Evidence sources
- Before
- Not previously recorded
- After
- https://scorecard.pvel.com/methodology/; https://scorecard.pvel.com/top-performers/; https://scorecard.pvel.com/wp-content/uploads/2022-PVEL-PV-Module-Reliability-Scorecard-Summary.pdf; https://scorecard.pvel.com/wp-content/uploads/2024-PV-Module-Reliability-Scorecard.pdf
1 change to this record · 65 products changed in this update
1 change to this record · 3 products changed in this update
Product record
kind: panel; brand: Sungrow; name: SG-66TG5B; model: SG-66TG5B-720 through SG-66TG5B-725 (132 (6x22) cells, N-type monocrystalline, bifacial double glass); scored model SG-66TG5B-725; score: 57.8
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.
- Core scorecard evidence checked
- DE market evidence checked
- US market evidence checked
- AU market evidence checked
- Australian certification source identity verified
- Series benchmark evidence checked
Scored by Solar Analytica Research
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Our reading
SG-66TG5B scores 56, placing 57 of 60 in the Global Tier-1 class against a class average of 64.0. Its strongest scoring dimension is performance & degradation (73). Guarantee & Backbone scores 41, the lowest pillar for this product. The class average on guarantee & backbone is 59. Underlying specifications include a module efficiency of 23.3%, N-type monocrystalline cell technology, 15-year product warranty backed by a 30-year performance term.