Commercial Solar Panel Brands Compared on Datasheet Figures
Updated 23 October 2026 · SEO Dons Editorial
Which solar panel brands appear in UK commercial quotes?
Quotes name a brand and a power rating, and buyers then search the brand. This page compares six makers with current datasheets for modules in the sizes used on commercial roofs: Aiko, Canadian Solar, DMEGC, Jinko, LONGi and Trina. The comparison uses only what each maker prints on its own datasheet or product page for its own module, with the sheet version or date as printed. It is not a ranking and it contains no reviews: a brand missing from the table implies nothing, and a datasheet shows what a maker states under test conditions, not how a module will perform on a roof.
How do the datasheets compare?
The first table covers the electrical lines and the second the mechanical and warranty lines. Rows are in alphabetical order by maker, and each shows one current commercial model.
| Maker and model | Power class (W) | Top efficiency (%) | Cell technology as the maker states it | Pmax temperature coefficient (% per °C) | Datasheet as printed |
|---|---|---|---|---|---|
| Aiko Comet 3N72 mono-glass | 655–690 | 25.5 | N-type ABC (all back contact) | -0.26 | 202608 V1.1 |
| Canadian Solar TOPBiHiKu6 CS6.3-66TB | 645–670 | 24.8 | TOPCon | -0.26 | v1.11 |
| DMEGC Infinity RT 3.0 DMxxxG12RT-B66HSW | 640–665 | 24.6 | N-type mono-crystalline | -0.29 | ID 20260915 |
| Jinko Tiger Neo 3.0 JKM650-670N-66QL6-BDV | 650–670 | 24.8 | N-type TOPCon | -0.26 | © 2026 |
| LONGi Hi-MO X10 LR8-66HVD | 640–670 | 24.8 | HPBC 2.0 back contact | -0.26 | web datasheet page, undated |
| Trina Vertex N TSM-NEG19RC.20 | 625–650 | 24.1 | i-TOPCon Ultra | -0.29 | TSM_EN_2025_D |
| Maker | Mechanical load as stated | Product warranty | Performance warranty | First year, then annual | Year-30 endpoint |
|---|---|---|---|---|---|
| Aiko | Front 5,400 Pa, back 2,400 Pa | 15 years, extendable to 25 | 30 years linear | up to 1%, up to 0.35% | 88.85% printed |
| Canadian Solar | Snow up to 5,400 Pa, wind up to 2,400 Pa | 12 years | 30 years linear | up to 1%, up to 0.35% | not printed (88.85% by arithmetic) |
| DMEGC | Test front 5,400 and back 2,400 Pa; design 3,600 and 1,600 Pa | 15 years | 30 years linear | up to 1%, up to 0.35% | not printed (88.85% by arithmetic) |
| Jinko | Static test load 5,400 Pa front, 2,400 Pa rear | 12 years | 30 years linear | 1%, 0.35% | 88.85% printed |
| LONGi | Minimum design 1,600 Pa; static 5,400 Pa front, 2,400 Pa rear | 15 years | 30 years | 1%, 0.35% (years 2 to 30) | not printed on the datasheet page |
| Trina | not shown on the sheet | 12 years | 30 years | 1%, 0.4% | 87.4% printed |
The 30-year endpoints follow from the printed terms: 100 less the first-year allowance less 29 times the annual allowance. For 1% and 0.35% that is 100 - 1 - 29 × 0.35 = 88.85%, and for Trina's 1% and 0.4% it is 87.4%. Warranty lines are maximum loss the maker will allow, not forecasts; the lifespan and degradation page plots them against field data.
What does each column mean?
- Power class is the range of bins the model is sold in. A quote should name the bin.
- Top efficiency is the figure at the top bin, so it falls for lower bins; the efficiency page explains when it matters.
- Cell technology is the maker's own label. DMEGC's sheet says n-type mono-crystalline without naming the architecture.
- Temperature coefficient is the power lost per degree above 25 °C.
- Mechanical load is a test figure. DMEGC separates it from a design load that is the test figure divided by 1.5.
- Product warranty covers defects, and performance warranty covers output. The DMEGC, Canadian Solar and Trina sheets point to a separate warranty statement with the conditions.
- First-year and annual degradation set the output curve, with the endpoint as a check.
How can the model in a quote be checked?
- Get the full model code and power bin, and the datasheet version that matches them. Sheets here run from a 2025 Trina version to August and September 2026 versions from Aiko and DMEGC.
- Compare the product page with the sheet. Canadian Solar's HJT page lists "Module power up to 660W, module efficiency up to 24.4%", while its sheet v1.5 lists up to 645 W and 23.9%. LONGi's Hi-MO X10 page quotes a 30-year product and materials warranty, while the datasheet page for the LR8-66HVD shows 15 years.
- Look for missing lines. Trina's one-page sheet shows no mechanical load, and three of the six sheets leave out the year-30 endpoint. A missing line is a question to put in writing.
- Ask for the warranty statement for that exact model, because the sheets refer to it for conditions, and read the claim route. The warranties page covers what to look for.
- Check the certificates against the model, covered on the IEC and MCS certifications page.
Which differences between the rows matter most?
Efficiency is the widest gap. Between 24.1% (Trina) and 25.5% (Aiko) the difference is 1.4 points, or 5.8% more power per square metre of module, which changes the system size only where roof area is the limit. Degradation terms come next: 1% and 0.4% against 1% and 0.35% leaves 87.4% against 88.85% at year 30, and about 0.6 of a point on the 25-year average. Product warranty length differs by three years. The temperature coefficient spread, -0.26 to -0.29, is the narrowest in practice: on the English sites worked through on the TOPCon, HJT and PERC page it moves annual output by roughly a tenth of a percent.
What can a datasheet not show?
It cannot show field output, which depends on the site, the design and the installation, or the quality of a particular batch, or how quickly a claim is handled. Brand-tier lists are a separate topic on the Tier 1 page, and comparing whole quotes, not just panels, is on the quote comparison page. For the other datasheet lines to check on a roof, see the commercial PV panels page. An enquiry about a specific quote can be sent through this site's form.
Sources
- Aiko: Comet 3N72 Mono-Glass product page; Comet 3N72 datasheet, 202608 V1.1, checked 22 October 2026.
- Canadian Solar: TOPBiHiKu6 CS6.3-66TB datasheet v1.11; HiHero+ CS6.2-66HB datasheet v1.5; Low Carbon Module (HJT HiHero) page, checked 22 October 2026.
- DMEGC: DMxxxG12RT-B66HSW datasheet, document ID dated 15 September 2026; INFINITY RT 3.0 Series page, checked 22 October 2026.
- JinkoSolar: Tiger Neo 3.0 page; JKM650-670N-66QL6-BDV datasheet, © 2026, checked 22 October 2026.
- LONGi: LR8-66HVD 640~670M datasheet page; Hi-MO X10 product page, checked 22 October 2026.
- Trina Solar: Vertex N TSM-NEG19RC.20 datasheet (TSM_EN_2025_D), checked 22 October 2026.
Common questions
Does a datasheet show which brand will perform better?
No. A datasheet shows what the maker states under test conditions. Field output depends on the site, the design and the installation, and warranty values are ceilings. Use the sheet to check that a quote is internally consistent and that the module delivered matches the model named.
Why do product warranty lengths differ between brands?
Each maker sets its own commercial terms: 12 years on the Jinko, Trina and Canadian Solar TOPCon sheets and 15 years on the Aiko, DMEGC and LONGi sheets here, while Canadian Solar's HJT sheet shows 15. The product warranty covers defects, not output, and its conditions sit in a separate warranty document.
How often do manufacturers change their datasheets?
Often enough that the date matters. The sheets here run from a 2025 Trina version to August and September 2026 versions, and Canadian Solar's HJT page lists higher power than its sheet. Ask for the sheet version that matches the module named in the quote.
Do all six makers state the same degradation?
Nearly. Jinko, Aiko, DMEGC, LONGi and Canadian Solar's TOPCon sheet state 1% in the first year and 0.35% a year after, while Trina's sheet states 1% and 0.4%. At year 30 that is 88.85% against 87.4% of nameplate.