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

# First Solar vs Trina Solar

Trina Solar has the broader catalog (340 vs 63 models). Trina Solar leads on peak efficiency at 24.80%. Trina Solar leans bifacial (43% of lineup).


## The two companies


| Attribute | First Solar | Trina Solar |
| --- | --- | --- |
| Country | USA | China |
| Headquarters | Tempe, AZ | Changzhou |
| Founded | 1999 | 1997 |
| Employees | 5500-8100 |  |
| Annual capacity | 21+ GW/year |  |
| Tier 1 | yes | yes |
| Listed | NASDAQ: FSLR |  |
| Website | [https://www.firstsolar.com](https://www.firstsolar.com) | [https://www.trinasolar.com](https://www.trinasolar.com) |

First Solar is a leading American solar technology company and global provider of responsibly produced eco-efficient solar modules, advancing the fight against climate change. The company manufactures thin-film photovoltaic (PV) modules using cadmium telluride (CdTe) semiconductor technology. First Solar is unique...


## Catalog & Power


| Measure | First Solar | Trina Solar | Margin |
| --- | --- | --- | --- |
| Panel Models | 63 | 340 | +277 |
| Max Power | 550 W | 760 W | +210 W |
| Avg Power | 481 W | 520 W | +39 W |


## Efficiency


| Measure | First Solar | Trina Solar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 19.70% | 24.80% | +5.10 pp |
| Avg Efficiency | 18.56% | 21.71% | +3.16 pp |


## Reliability & Warranty


| Measure | First Solar | Trina Solar | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.320%/°C | -0.302%/°C | +0.018 |
| Bifacial Share | 12 (19%) | 145 (43%) | +24 pp |
| Avg Warranty | 29.3 yrs | 28.2 yrs | +1.1 yr |


## Efficiency distribution

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


| Efficiency band | First Solar | Trina Solar |
| --- | --- | --- |
| \<20% | 63 (100.0%) | 22 (6.5%) |
| 20-21% | 0 | 57 (16.8%) |
| 21-22% | 0 | 83 (24.4%) |
| 22-23% | 0 | 102 (30.0%) |
| 23%+ | 0 | 76 (22.4%) |


## Power distribution

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


| Power band | First Solar | Trina Solar |
| --- | --- | --- |
| 400-499W | 44 (69.8%) | 142 (41.8%) |
| 500-599W | 19 (30.2%) | 54 (15.9%) |
| \<400W | 0 | 28 (8.2%) |
| 600-699W | 0 | 72 (21.2%) |
| 700W+ | 0 | 44 (12.9%) |


## Cell technology

Dominant cell tech: **CdTe** (81%)

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


| Technology | First Solar | Trina Solar |
| --- | --- | --- |
| CdTe | 51 (81.0%) | 0 |
| Unknown | 12 (19.0%) | 11 (3.2%) |
| TOPCon | 0 | 248 (72.9%) |
| PERC | 0 | 75 (22.1%) |
| N-type | 0 | 6 (1.8%) |


## Top panels, First Solar


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [FS-7550A-TR1](https://comparepv.com/panel/first-solar-fs-7550a-tr1) | 550 | 19.7 | -0.320 | Thin film |
| 2 | [FS-7550A-FT1](https://comparepv.com/panel/first-solar-fs-7550a-ft1) | 550 | 19.7 | -0.320 | Thin film |
| 3 | [FS-7545A-TR1](https://comparepv.com/panel/first-solar-fs-7545a-tr1) | 545 | 19.5 | -0.320 | Thin film |
| 4 | [FS-7545A-FT1](https://comparepv.com/panel/first-solar-fs-7545a-ft1) | 545 | 19.5 | -0.320 | Thin film |
| 5 | [FS-7540A-TR1](https://comparepv.com/panel/first-solar-fs-7540a-tr1) | 540 | 19.3 | -0.320 | Thin film |
| 6 | [FS-7540A-FT1](https://comparepv.com/panel/first-solar-fs-7540a-ft1) | 540 | 19.3 | -0.320 | Thin film |
| 7 | [FS-7535A-TR1](https://comparepv.com/panel/first-solar-fs-7535a-tr1) | 535 | 19.1 | -0.320 | Thin film |
| 8 | [FS-7535A-FT1](https://comparepv.com/panel/first-solar-fs-7535a-ft1) | 535 | 19.1 | -0.320 | Thin film |
| 9 | [FS-7532A-FT1](https://comparepv.com/panel/first-solar-fs-7532a-ft1) | 532 | 19.0 | -0.320 | Thin film |
| 10 | [FS-7530A-TR1](https://comparepv.com/panel/first-solar-fs-7530a-tr1) | 530 | 19.0 | -0.320 | Thin film |


## 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

First Solar is an American manufacturer headquartered in Tempe, Arizona, founded in 1999, with its primary production base in the United States - a rarity among top global solar suppliers. The company is a consistent presence on BloombergNEF bankability lists and is regarded by institutional lenders and project developers as one of the most financially secure panel suppliers in the industry. As of mid-2025, First Solar operated approximately 21 GW of installed nameplate production capacity globally, with plans to surpass 25 GW annually by 2026 and a fifth U.S. factory set to add 3.7 GW of further output. Trina Solar, founded in 1997 and headquartered in Changzhou, China, ranks among the top three solar manufacturers worldwide by shipment volume, having surpassed 205 GW in cumulative global deliveries across more than 100 countries. Trina earned a 100% bankability score in BloombergNEF's 2025 module survey - the eighth consecutive year it achieved that recognition - and has maintained PVEL Top Performer status for eleven straight years. In terms of institutional footprint, First Solar's U.S.-based manufacturing gives it a decisive edge in American-regulated markets, while Trina's global distribution scale makes it the dominant force internationally.

The two manufacturers diverge sharply at the technology level. First Solar's entire commercial lineup is built on cadmium telluride (CdTe) thin-film cells, a fundamental departure from the crystalline silicon used by virtually every other major manufacturer. CdTe excels at utility-scale ground-mount projects in high-temperature climates, where its favorable temperature coefficient and low degradation rates deliver measurable lifetime energy gains over silicon alternatives. First Solar's CuRe platform, entering limited commercial production in 2025, advances bifaciality and long-term stability further. Trina Solar is built around TOPCon crystalline silicon - specifically its Vertex series using 210mm wafers reaching up to 22.5% module efficiency, with a newly introduced 485 W panel rated at 24.3% efficiency. The Vertex S+ G3 targets residential and commercial rooftop installations, while larger Vertex formats serve utility-scale and C&I projects. Trina also bundles TrinaTracker solar tracking systems and energy storage under its own brand, positioning itself as a broader ecosystem supplier.

For buyers in the U.S. utility sector, First Solar is the stronger default, with domestic-content advantages under the IRA and a technology profile optimized for large ground-mounted arrays in hot climates. For residential, commercial, and international utility projects, Trina Solar is the more accessible choice - high-efficiency TOPCon panels at competitive prices with wide installer networks. Both carry top-tier bankability credentials, so neither is a compromise; the deciding factors are project type, geography, and financing structure.

Written by claude-sonnet from the figures above.


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- [AIKO vs Trina Solar](https://comparepv.com/aiko-vs-trina-solar)
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Source: https://comparepv.com/first-solar-vs-trina-solar

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