The assessment
How it scores, by category
The data
HJT module
Produces DC electricity at the roof. It contains no system-level power conversion or storage.
- Product role
- None in the module.
- Published range
- 370–390 W
- Electrical layer
- DC module output
- Construction
- Bifacial, Dual-glass
Performance guarantee: 30-year linear output
Wattage figure based on the sourced rated power (390 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, at 30°C and 1000 W/m². Rated 390 W at STC.
How this is modelled
Compounds this panel’s own published first-year (1%) and annual (0.2%/yr) degradation figures against its 390 W rated (STC) output, then derates for the ambient and irradiance selected. Output is scaled roughly linearly with irradiance (1000W/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 (43°C) and temperature coefficient (-0.259%/°C), giving an estimated cell temperature of 59°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
| Year | 1 | 5 | 10 | 15 | 20 | 25 |
|---|---|---|---|---|---|---|
| Watts | 352 W | 350 W | 346 W | 342 W | 339 W | 335 W |
| % of rated | 90.3% | 89.6% | 88.7% | 87.8% | 86.9% | 86.0% |
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 rating in this exact published series. Scored model: Meyer Burger Glass 390 · checked 2026-08-01. Evidence.
Sources & references · checked 2026-08-12
Strong evidence coverage
18 of 19 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. Meyer Burger Glass exact product evidence joined to official Freiberg production closure and final production-asset outcome; rechecked 2026-08-06 Archive recovery 2026-08-12: Meyer Burger's website has been failing since the insolvency and six of the record's seven citations now resolve only via the Internet Archive; snapshots from October to December 2025 are appended beside each original URL. The German-language datasheet has no snapshot; the archived English datasheet covers the same product.
- Sourced valuesData card →
- Warranty summary25-year product warranty →
Show 4 more
- Manufacturing track recordManufacturer ↗
- Manufacturing track recordManufacturer ↗
- Hail resistanceManufacturer ↗
- Hail resistanceManufacturer ↗
Evidence timeline
Recorded verification events for this scorecard. These are evidence checks, not historical score snapshots.
- Core scorecard evidence checked
- Legacy product record archived
- AU market evidence checked
- Series benchmark evidence checked
- Plain-language warranty summary checked
Scored by Solar Analytica Research
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Our reading
Its strongest scoring dimension is performance & degradation (91), running 23.2 points above the class average on this dimension. Architecture & Design scores 61, the lowest pillar for this product. The class average on architecture & design is 68. Underlying specifications include a module efficiency of 21.8%, Heterojunction (HJT) cell technology, 30-year product warranty backed by a 30-year performance term.