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 2026-09-22
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.
How far the evidence reaches
- OutputManufacturer claim9 rows
- EnduranceManufacturer claim2 rows
- SafetyNot assessed for panels
- Warranty & backingManufacturer claim1 row
- FitManufacturer claim1 row
- FootprintNot assessed for panels
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. How the evidence puzzle works
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. Australian warranty/service integration reviewed 2026-10-05: current maker-linked global policy printed GN-0002-2026-T_2.1 explicitly names SG-66TG5B-XXX and supports six conditional service terms for post-issuance Class A sales, subject to sales-contract date. The webpage download label GN-0001-2026-T differs from the retrieved printed revision and is recorded explicitly. Preserve older-contract uncertainty, 725 W Australian benchmark, global technical criteria and market approval/availability dates.
- Sourced valuesData card →
- Archived copy of the primary sourcePDF ↗
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- Independent energy yieldIndependent test ↗
- Independent energy yieldIndependent test ↗
Help strengthen this record
These are published evidence gaps, not private submissions. A source is reviewed under the same methodology whether it comes from a reader, installer or manufacturer.
- Independent energy yieldNot stated in reviewed documentsThe public documents reviewed for this record do not state this value. A published or independent source is requested.Offer a source
Product record history
5 changes to this record · 1 product changed in this update
AU Support Note
- Current text
- Availability is a certification fact, not a marketing one. Sungrow's Australian site, checked 2026-08-19, returns no occurrence of the words module or panel: its product categories are string inverters, modular inverters and storage. All module material sits on the global site. So 145 CEC-approved module SKUs exist behind no Australian product presence, and distributor stock is unknown. Utility and commercial format at 2384 x 1303 mm and 37.0 kg. This family also carries a shorter product warranty than its siblings: 15 years against 25. Current global warranty starts at the earlier of the 90th calendar day after factory departure or initial installation by the original buyer. Manual compliance and policy exclusions apply; site removal/reinstallation remains the buyer’s cost. The warranty issuer is Anhui Sungrow Solar Energy Technology Co., Ltd.; the scored manufacturer identity is retained separately. The separate overseas rooftop policy and its specific coast/monthly-temperature/humidity conditions are not transferred to this family. Exact earlier-contract applicability remains unresolved.
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 recordAU Warranty conditions
- Before
- Not previously recorded
- After
- labour: Site labour is not covered. Buyer bears dismantling, handling, repackaging, installation/reinstallation and related site expenses. The policy separately covers direct repair costs when Sungrow chooses repair/replacement.; registration: Written claim conditions apply: a claim within two months of discovering breach requires a dated invoice, product details, description, editable serial numbers and photographs/data. Prior written return authorisation is required. The reviewed policy gives claim timing rather than a separate product-registration deadline.; remedy: Sungrow Solar chooses repair, power-shortfall refund, residual-value refund, additional modules or replacement. Substitute modules may differ; repaired/replaced/additional modules retain the original remaining warranty term. Policy liability is capped at the paid invoice price, subject to applicable law.; removal reinstallation: Removal and reinstallation are excluded: buyer bears dismantling, handling, repackaging, installing/reinstalling and related site expenses.; transferability: Written notice permits whole-rights transfer if modules stay intact at the original site, amounts owing are settled and the new owner accepts the policy. Supply ownership evidence within 15 working days after Sungrow notice; additional confirmation may be requested.; transport: Eligible delivery shipping of repaired/replacement/additional modules is covered, excluding insurance, air freight, customs and specified additional costs. Buyer initially pays premature return freight; reimbursement requires third-party confirmation of a covered defect and receipts.
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. Australian warranty/service integration reviewed 2026-10-05: current maker-linked global policy printed GN-0002-2026-T_2.1 explicitly names SG-66TG5B-XXX and supports six conditional service terms for post-issuance Class A sales, subject to sales-contract date. The webpage download label GN-0001-2026-T differs from the retrieved printed revision and is recorded explicitly. Preserve older-contract uncertainty, 725 W Australian benchmark, global technical criteria and market approval/availability dates.
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 Warranty scope
- Current text
- Current maker-linked global policy printed GN-0002-2026-T_2.1, issued 31 May 2026 and effective 1 June 2026, explicitly names SG-66TG5B-XXX, including the scored 725 W bin. Anhui Sungrow Solar Energy Technology Co., Ltd. provides 15-year product and 30-year dual-glass front-output cover for Class A modules sold after issuance, subject to the sales-contract date. The product webpage labels this download GN-0001-2026-T; these terms follow the retrieved PDF’s printed revision. Earlier-contract applicability remains unresolved. Front-side STC nameplate output cover permits first-year loss no more than 1%, annual loss no more than 0.4% in years 2–30, and at least 87.4% at year 30, with the policy’s testing and measurement-uncertainty conditions. Rear-side output is not warranted.
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 recordAU Evidence sources
- Before
- 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
- 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://www.sungrowpower.com/en/sungrow-renewables-page/smart-modules/sg-66tg5b
4 changes to this record · 49 products changed in this update
DE Support Note
- Current text
- 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. Re-audited 2026-09-22: this determination rests solely on the fetch failure recorded above, with no independently reachable regional catalogue, store or archived copy consulted. Downgraded to not_reviewed - unavailable was not confirmed, and this pass did not re-fetch to confirm available either.
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 evidenceDE market evidenceUS Support Note
- Current text
- 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. Re-audited 2026-09-22: this determination rests solely on the fetch failure recorded above, with no independently reachable regional catalogue, store or archived copy consulted. Downgraded to not_reviewed - unavailable was not confirmed, and this pass did not re-fetch to confirm available either.
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 evidenceUS market evidence
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)
Certification: SG-66TG5B-725 (IEC 61215-2021)
- 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
- US market evidence checked
- DE market evidence checked
- AU market evidence checked
- Australian certification source identity verified
- Series benchmark evidence checked
Scored by Solar Analytica Research
Further reading from Findings
- What changed in the benchmark in August 2026. · 7 min read
Stay across the benchmark.
New scorecards, score changes and market signals, published as they happen.
Our reading
SG-66TG5B scores 56, placing 61 of 66 in the Global Tier-1 class against a class average of 63.6. Its strongest scoring dimension is performance & degradation (73), above the class average of 72. Guarantee & Backbone scores 41, the lowest pillar for this product. The class average on guarantee & backbone is 58. 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.
Dietreich Farquharson · review.solar