---
title: "SOMI vs Trina Solar - Brand Comparison | ComparePV"
description: "Compare SOMI vs Trina Solar solar panels: full portfolio, efficiency, cell technology breakdown, warranty terms and company background."
source: "https://comparepv.com/somi-vs-trina-solar"
---

# SOMI vs Trina Solar

Trina Solar has the broader catalog (340 vs 6 models). Trina Solar leads on peak efficiency at 24.80%. Trina Solar leans bifacial (43% of lineup).


## The two companies


| Attribute | SOMI | Trina Solar |
| --- | --- | --- |
| Country |  | China |
| Headquarters |  | Changzhou |
| Founded |  | 1997 |
| Employees |  |  |
| Annual capacity |  |  |
| Tier 1 | no | yes |
| Listed |  |  |
| Website |  | [https://www.trinasolar.com](https://www.trinasolar.com) |


## Catalog & Power


| Measure | SOMI | Trina Solar | Margin |
| --- | --- | --- | --- |
| Panel Models | 6 | 340 | +334 |
| Max Power | 550 W | 760 W | +210 W |
| Avg Power | 538 W | 520 W | +17 W |


## Efficiency


| Measure | SOMI | Trina Solar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 21.30% | 24.80% | +3.50 pp |
| Avg Efficiency | 20.80% | 21.71% | +0.91 pp |


## Reliability & Warranty


| Measure | SOMI | Trina Solar | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.350%/°C | -0.302%/°C | +0.048 |
| Bifacial Share | 0 (0%) | 145 (43%) | +43 pp |
| Avg Warranty | 30.0 yrs | 28.2 yrs | +1.8 yr |


## Efficiency distribution

Trina Solar skews to higher efficiency: 22% of lineup is 23%+


| Efficiency band | SOMI | Trina Solar |
| --- | --- | --- |
| 20-21% | 4 (66.7%) | 57 (16.8%) |
| 21-22% | 2 (33.3%) | 83 (24.4%) |
| \<20% | 0 | 22 (6.5%) |
| 22-23% | 0 | 102 (30.0%) |
| 23%+ | 0 | 76 (22.4%) |


## Power distribution

Trina Solar offers more 600W+ panels (34% of lineup)


| Power band | SOMI | Trina Solar |
| --- | --- | --- |
| 500-599W | 6 (100.0%) | 54 (15.9%) |
| \<400W | 0 | 28 (8.2%) |
| 400-499W | 0 | 142 (41.8%) |
| 600-699W | 0 | 72 (21.2%) |
| 700W+ | 0 | 44 (12.9%) |


## Cell technology

Dominant cell tech: **PERC** (100%)

Dominant cell tech: **TOPCon** (73%)


| Technology | SOMI | Trina Solar |
| --- | --- | --- |
| PERC | 6 (100.0%) | 75 (22.1%) |
| TOPCon | 0 | 248 (72.9%) |
| Unknown | 0 | 11 (3.2%) |
| N-type | 0 | 6 (1.8%) |


## Top panels, SOMI


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [SP550M-72HB](https://comparepv.com/panel/somi-sp550m-72hb) | 550 | 21.3 | -0.350 | Monocrystalline |
| 2 | [SP545M-72HB](https://comparepv.com/panel/somi-sp545m-72hb) | 545 | 21.1 | -0.350 | Monocrystalline |
| 3 | [SP540M-72HB](https://comparepv.com/panel/somi-sp540m-72hb) | 540 | 20.9 | -0.350 | Monocrystalline |
| 4 | [SP535M-72HB](https://comparepv.com/panel/somi-sp535m-72hb) | 535 | 20.7 | -0.350 | Monocrystalline |
| 5 | [SP530M-72HB](https://comparepv.com/panel/somi-sp530m-72hb) | 530 | 20.5 | -0.350 | Monocrystalline |
| 6 | [SP525M-72HB](https://comparepv.com/panel/somi-sp525m-72hb) | 525 | 20.3 | -0.350 | Monocrystalline |


## Top panels, Trina Solar


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [TSM-NEG21C.20Q-760](https://comparepv.com/panel/trina-solar-tsm-neg21c-20q-760) | 760 | 24.5 | -0.260 | Monocrystalline |
| 2 | [TSM-NEG21C.20Q-755](https://comparepv.com/panel/trina-solar-tsm-neg21c-20q-755) | 755 | 24.3 | -0.260 | Monocrystalline |
| 3 | [TSM-NEG21C.20Q-750](https://comparepv.com/panel/trina-solar-tsm-neg21c-20q-750) | 750 | 24.1 | -0.260 | Monocrystalline |
| 4 | [TSM-NEG21C.20Q-745](https://comparepv.com/panel/trina-solar-tsm-neg21c-20q-745) | 745 | 24.0 | -0.260 | Monocrystalline |
| 5 | [TSM-NEG21C.20-740](https://comparepv.com/panel/trina-solar-co-ltd-tsm-neg21c-20-740) | 740 | 23.8 | -0.290 | Monocrystalline |
| 6 | [TSM-NEG21C.20 740](https://comparepv.com/panel/trina-solar-tsm-neg21c-20-740) | 740 | 23.8 | -0.290 | Monocrystalline |
| 7 | [TSM-NEG21C.20Q-740](https://comparepv.com/panel/trina-solar-tsm-neg21c-20q-740) | 740 | 23.8 | -0.260 | Monocrystalline |
| 8 | [TSM-NEG21C.20-735](https://comparepv.com/panel/trina-solar-co-ltd-tsm-neg21c-20-735) | 735 | 23.7 | -0.290 | Monocrystalline |
| 9 | [TSM-NEG21C.20 735](https://comparepv.com/panel/trina-solar-tsm-neg21c-20-735) | 735 | 23.7 | -0.290 | Monocrystalline |
| 10 | [TSM-NEG21C.20Q-735](https://comparepv.com/panel/trina-solar-tsm-neg21c-20q-735) | 735 | 23.7 | -0.260 | Monocrystalline |


## Summary

SOMI has virtually no traceable presence in global solar manufacturing databases as a module producer. Available search results point to a small Central European operation - likely registered in the Czech Republic - that appears to focus on solar installation services and energy consultancy rather than large-scale panel manufacturing. No confirmed production capacity in gigawatts, no BloombergNEF Tier 1 listing, and no PVEL certification records could be found for the brand as of mid-2026. Trina Solar, by contrast, is among the most established photovoltaic manufacturers in the world, founded in 1997 and headquartered in Changzhou, China. It shipped approximately 77 GW of modules in 2024, ranking it alongside JA Solar in the global top three, and has achieved a 100% bankability rating in BloombergNEF's annual PV Module Bankability survey eight times - a record no other manufacturer has matched. On institutional footprint alone, the two brands occupy entirely different tiers.

Trina Solar's current residential flagship is the Vertex S+ G3 series, built on N-type i-TOPCon cell technology and delivering module efficiencies up to 24.3% with an annual degradation rate of approximately 0.35%. For commercial and industrial rooftop segments, the broader Vertex S family covers a wide power range, while the large-format Vertex modules - engineered around 210 mm wafers - anchor the company's utility-scale ground-mount portfolio. Trina Solar has earned PVEL Top Performer status for eleven consecutive years, a credential that carries direct weight in project finance underwriting. Because SOMI's product catalog and cell technology cannot be confirmed from any independent source, a specification-level comparison between the two brands is not possible.

For the overwhelming majority of buyers - residential homeowners, commercial building operators, or developers seeking bankable off-take - Trina Solar is the clear default recommendation. Its verified Tier 1 status, a warranty structure of 25 years on product and 30 years on power output for current lines, and a global service network provide a level of risk mitigation that an unverified regional brand simply cannot offer. SOMI may serve a local niche where proximity or bundled service contracts add genuine value, but it cannot be recommended on equal terms with Trina Solar for any project of meaningful scale or requiring third-party financing.

Written by claude-sonnet from the figures above.


## Other comparisons

- [SOMI vs A.B. Energy](https://comparepv.com/somi-vs-a-b-energy)
- [AE Solar vs Trina Solar](https://comparepv.com/ae-solar-vs-trina-solar)
- [SOMI vs AEET](https://comparepv.com/somi-vs-aeet)
- [AIKO vs Trina Solar](https://comparepv.com/aiko-vs-trina-solar)
- [SOMI vs AKCOME](https://comparepv.com/somi-vs-akcome)
- [ARTsolar vs Trina Solar](https://comparepv.com/artsolar-vs-trina-solar)


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Source: https://comparepv.com/somi-vs-trina-solar

Not in this file, on the page: the distributions above drawn as charts.