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

# ET Solar vs Trina Solar

Trina Solar has the broader catalog (340 vs 10 models). Trina Solar leads on peak efficiency at 24.80%.


## The two companies


| Attribute | ET Solar | Trina Solar |
| --- | --- | --- |
| Country | China | China |
| Headquarters | Nanjing | Changzhou |
| Founded | 2005 | 1997 |
| Employees |  |  |
| Annual capacity |  |  |
| Tier 1 | no | yes |
| Listed |  |  |
| Website | [https://www.etsolar.com](https://www.etsolar.com) | [https://www.trinasolar.com](https://www.trinasolar.com) |


## Catalog & Power


| Measure | ET Solar | Trina Solar | Margin |
| --- | --- | --- | --- |
| Panel Models | 10 | 340 | +330 |
| Max Power | 555 W | 760 W | +205 W |
| Avg Power | 542 W | 520 W | +22 W |


## Efficiency


| Measure | ET Solar | Trina Solar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 21.40% | 24.80% | +3.40 pp |
| Avg Efficiency | 20.99% | 21.71% | +0.72 pp |


## Reliability & Warranty


| Measure | ET Solar | Trina Solar | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.340%/°C | -0.302%/°C | +0.038 |
| Bifacial Share | 5 (50%) | 145 (43%) | +7 pp |
| Avg Warranty | 27.5 yrs | 28.2 yrs | +0.7 yr |


## Efficiency distribution

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


| Efficiency band | ET Solar | Trina Solar |
| --- | --- | --- |
| 20-21% | 5 (50.0%) | 57 (16.8%) |
| 21-22% | 5 (50.0%) | 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 | ET Solar | Trina Solar |
| --- | --- | --- |
| 500-599W | 10 (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 | ET Solar | Trina Solar |
| --- | --- | --- |
| PERC | 10 (100.0%) | 75 (22.1%) |
| TOPCon | 0 | 248 (72.9%) |
| Unknown | 0 | 11 (3.2%) |
| N-type | 0 | 6 (1.8%) |


## Top panels, ET Solar


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [ET-M772BH555WW/WB](https://comparepv.com/panel/et-solar-et-m772bh555ww-wb) | 555 | 21.4 | -0.340 | Monocrystalline |
| 2 | [ET-M772BH550TW/TB](https://comparepv.com/panel/et-solar-et-m772bh550tw-tb) | 550 | 21.3 | -0.340 | Monocrystalline |
| 3 | [ET-M772BH550WW/WB](https://comparepv.com/panel/et-solar-et-m772bh550ww-wb) | 550 | 21.3 | -0.340 | Monocrystalline |
| 4 | [ET-M772BH545TW/TB](https://comparepv.com/panel/et-solar-et-m772bh545tw-tb) | 545 | 21.1 | -0.340 | Monocrystalline |
| 5 | [ET-M772BH545WW/WB](https://comparepv.com/panel/et-solar-et-m772bh545ww-wb) | 545 | 21.1 | -0.340 | Monocrystalline |
| 6 | [ET-M772BH540TW/TB](https://comparepv.com/panel/et-solar-et-m772bh540tw-tb) | 540 | 20.9 | -0.340 | Monocrystalline |
| 7 | [ET-M772BH540WW/WB](https://comparepv.com/panel/et-solar-et-m772bh540ww-wb) | 540 | 20.9 | -0.340 | Monocrystalline |
| 8 | [ET-M772BH535TW/TB](https://comparepv.com/panel/et-solar-et-m772bh535tw-tb) | 535 | 20.7 | -0.340 | Monocrystalline |
| 9 | [ET-M772BH535WW/WB](https://comparepv.com/panel/et-solar-et-m772bh535ww-wb) | 535 | 20.7 | -0.340 | Monocrystalline |
| 10 | [ET-M772BH530TW/TB](https://comparepv.com/panel/et-solar-et-m772bh530tw-tb) | 530 | 20.5 | -0.340 | 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

ET Solar, also operating as EliTe Solar, is a Chinese PV manufacturer headquartered in Nanjing, founded in 2005. The company has held BloombergNEF Tier 1 status since 2012 and has improved its bankability score to 61% in recent BNEF assessments - a meaningful step up from prior years. Its manufacturing fleet runs at approximately 4 GW of cell capacity and 4 GW of module capacity annually, supported by 6 GW of wafer production and a global footprint spanning more than 140 countries, with offices in Germany, Spain, the Netherlands, the United States, and Brazil. Trina Solar, founded in 1997 and headquartered in Changzhou, Jiangsu Province, operates at an entirely different scale: the company consistently ships over 80 GW of modules per year, has crossed 225 GW in cumulative global shipments as of early 2025, and has topped BloombergNEF's bankability ranking eight times - achieving a 100% bankability score in its most recent assessment. On the dimension of institutional credibility and market presence, Trina Solar is in a different league.

In terms of product technology, ET Solar focuses on the 182 mm wafer format and offers both P-type PERC and N-type TOPCon modules. It has appeared on PVEL's Top Performers list at least seven times, giving it a credible track record in third-party reliability testing. ET Solar's portfolio is particularly well-suited to commercial and industrial rooftop projects and mid-scale ground-mounted systems where price-performance balance is the primary driver. Trina Solar's lineup is broader and more segmented: the Vertex S+ G3 dual-glass TOPCon series targets residential and light-commercial rooftops, while the Vertex N series - including i-TOPCon Ultra modules reaching up to 760 W at 24.5% efficiency - is designed for utility-scale and large ground-mount deployments. Trina is actively positioning itself as a leader in what it calls the TOPCon 2.0 era, with proprietary cell architecture improvements already in mass production.

For a buyer prioritizing bank financing, institutional procurement, or access to the highest-wattage modules available, Trina Solar is the clearer choice. ET Solar is a well-validated mid-tier Tier 1 option with strong independent test credentials and competitive pricing, making it attractive for installers and developers who want bankable quality without paying a premium. In smaller and medium-sized systems, the two brands are largely interchangeable, and the decision often comes down to local distributor relationships and delivery terms rather than any fundamental quality difference.

Written by claude-sonnet from the figures above.


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

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