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
- 645–660 W
- Electrical layer
- DC module output
- Construction
- Bifacial, Dual-glass
Performance guarantee: 30-year linear output
Wattage figure based on the sourced rated power (660 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 660 W at STC.
How this is modelled
Modelled from this panel’s own published first-year (1%) and annual (0.35%/yr) degradation figures, compounded against its 660 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 | 653 W | 644 W | 633 W | 621 W | 610 W | 598 W |
| % of rated | 99.0% | 97.6% | 95.8% | 94.1% | 92.3% | 90.6% |
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 uses the highest exact bin inside the retained Australian regulator intersection. Scored model: AIKO-A660-GRH66Dw · checked 2026-08-21. Evidence.
Sources & references · checked 2026-09-01
Strong evidence coverage
18 of 18 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 from the exact manufacturer sheet and the CER export checked 2026-08-12. The global sheet spans 645-680 W; the retained Australian intersection is 645-660 W. GRH66Dw also labels another current Stellar generation, but the 75 +/- 5% bifacial factor and +85 C upper operating limit make this a distinct evidence object. 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 yieldManufacturer ↗
- Independent energy yieldIndustry report ↗
Product record history
9 changes to this record · 152 products changed in this update
US Support Note
- Before
- Not previously recorded
- After
- aikosolar.com/us/products/ serves the English global product index (canonical /en/products/), not a United States catalogue. AIKO-A660-GRH66Dw is not named on a US-specific sale path. The Australian N-Type ABC warranty is not transferred.
DE Evidence sources
- Before
- Not previously recorded
- After
- https://aikosolar.com/de/products/
DE Support Note
- Before
- Not previously recorded
- After
- aikosolar.com/de/products/ lists STELLAR 1N+66 Doppelglas 645W-680W as Auslaufmodell. It does not offer a current German product page for AIKO-A660-GRH66Dw. Remaining-stock Auslaufmodell availability is not inferred. Stellar 2N+66 also uses GRH66Dw and is not transferred onto this 1N+66 record.
US Evidence sources
- Before
- Not previously recorded
- After
- https://aikosolar.com/en/products/; https://aikosolar.com/us/products/
Source revision
- Current text
- Built from the exact manufacturer sheet and the CER export checked 2026-08-12. The global sheet spans 645-680 W; the retained Australian intersection is 645-660 W. GRH66Dw also labels another current Stellar generation, but the 75 +/- 5% bifacial factor and +85 C upper operating limit make this a distinct evidence object. 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
5 changes to this record · 118 products changed in this update
Independent energy yield
- Before
- Not previously recorded
- After
- Brand or series yield-tested; exact model not covered
Independent energy yield: Evidence sources
- Before
- Not previously recorded
- After
- https://aikosolar.com/au/news-aiko-claims-top-spot/; https://www.pv-magazine.com/2023/11/09/pv-magazine-test-september-2023-results/
Independent energy yield: Evidence status
- Before
- Not previously recorded
- After
- sourced
1 change to this record · 8 products changed in this update
Product record
kind: panel; brand: AIKO; name: Stellar 1N+66 Dual-Glass; model: AIKO-A645-GRH66Dw through AIKO-A660-GRH66Dw (132 half-cells, N-type ABC rear-contact, bifacial dual glass); scored model AIKO-A660-GRH66Dw; score: 68.3
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
- Series benchmark evidence checked
Scored by Solar Analytica Research
Stay across the benchmark.
New scorecards, score changes and market signals, published as they happen.
Our reading
Stellar 1N+66 Dual-Glass scores 66, placing 30 of 53 in the Premium Performance class against a class average of 67.5. Its strongest scoring dimension is architecture & design (94), running 8.0 points above the class average on this dimension. Guarantee & Backbone scores 44, the lowest pillar for this product. The class average on guarantee & backbone is 54. Underlying specifications include a module efficiency of 24.4%, N-type ABC cell technology, 15-year product warranty backed by a 30-year performance term.