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

# KIOTO Solar vs Trina Solar

Trina Solar has the broader catalog (340 vs 7 models). Trina Solar leads on peak efficiency at 24.80%. KIOTO Solar leans bifacial (57% of lineup).


## The two companies


| Attribute | KIOTO Solar | Trina Solar |
| --- | --- | --- |
| Country | Austria | China |
| Headquarters | St. Veit an der Glan | Changzhou |
| Founded | 1991 | 1997 |
| Employees | 201-500 |  |
| Annual capacity | \<1 GW/year |  |
| Tier 1 | no | yes |
| Listed |  |  |
| Website | [https://www.kiotosolar.com](https://www.kiotosolar.com) | [https://www.trinasolar.com](https://www.trinasolar.com) |

KIOTO Solar (KIOTO Photovoltaics GmbH) is an Austrian manufacturer of photovoltaic modules, producing panels exclusively at its facility in St. Veit an der Glan, Carinthia. The company traces its roots to 1991 as part of the Sonnenkraft group, with PV module production beginning in 2005. It is the market leader for PV...


## Catalog & Power


| Measure | KIOTO Solar | Trina Solar | Margin |
| --- | --- | --- | --- |
| Panel Models | 7 | 340 | +333 |
| Max Power | 450 W | 760 W | +310 W |
| Avg Power | 446 W | 520 W | +74 W |


## Efficiency


| Measure | KIOTO Solar | Trina Solar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 22.83% | 24.80% | +1.97 pp |
| Avg Efficiency | 22.53% | 21.71% | +0.82 pp |


## Reliability & Warranty


| Measure | KIOTO Solar | Trina Solar | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.309%/°C | -0.302%/°C | +0.007 |
| Bifacial Share | 4 (57%) | 145 (43%) | +14 pp |
| Avg Warranty | 27.1 yrs | 28.2 yrs | +1.1 yr |


## Efficiency distribution

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


| Efficiency band | KIOTO Solar | Trina Solar |
| --- | --- | --- |
| 22-23% | 7 (100.0%) | 102 (30.0%) |
| \<20% | 0 | 22 (6.5%) |
| 20-21% | 0 | 57 (16.8%) |
| 21-22% | 0 | 83 (24.4%) |
| 23%+ | 0 | 76 (22.4%) |


## Power distribution

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


| Power band | KIOTO Solar | Trina Solar |
| --- | --- | --- |
| 400-499W | 7 (100.0%) | 142 (41.8%) |
| \<400W | 0 | 28 (8.2%) |
| 500-599W | 0 | 54 (15.9%) |
| 600-699W | 0 | 72 (21.2%) |
| 700W+ | 0 | 44 (12.9%) |


## Cell technology

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

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


| Technology | KIOTO Solar | Trina Solar |
| --- | --- | --- |
| TOPCon | 7 (100.0%) | 248 (72.9%) |
| PERC | 0 | 75 (22.1%) |
| Unknown | 0 | 11 (3.2%) |
| N-type | 0 | 6 (1.8%) |


## Top panels, KIOTO Solar


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [KPV 450 Wp HC NE](https://comparepv.com/panel/kioto-solar-kpv-450-wp-hc-ne) | 450 | 22.5 | -0.300 | Monocrystalline |
| 2 | [KPV 450Wp HC](https://comparepv.com/panel/kioto-solar-kpv-450wp-hc) | 450 | 22.5 | -0.320 | Monocrystalline |
| 3 | [KPV 450Wp HC NE (G/G-TC)](https://comparepv.com/panel/kioto-solar-kpv-450wp-hc-ne-g-g-tc) | 450 | 22.5 | -0.300 | Monocrystalline |
| 4 | [KPV 445Wp HC](https://comparepv.com/panel/kioto-solar-kpv-445wp-hc) | 445 | 22.8 | -0.320 | Monocrystalline |
| 5 | [KPV 445Wp HC NE (G/G-TC)](https://comparepv.com/panel/kioto-solar-kpv-445wp-hc-ne-g-g-tc) | 445 | 22.8 | -0.300 | Monocrystalline |
| 6 | [KPV 440 Wp HCB](https://comparepv.com/panel/kioto-solar-kpv-440-wp-hcb) | 440 | 22.0 | -0.320 | Monocrystalline |
| 7 | [KPV 440Wp HC NE (G/G-TC)](https://comparepv.com/panel/kioto-solar-kpv-440wp-hc-ne-g-g-tc) | 440 | 22.5 | -0.300 | 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

KIOTO Solar is an Austrian photovoltaic manufacturer headquartered in Sankt Veit an der Glan, Carinthia, with more than 25 years of market presence. The company produces panels 100% made in Austria, positioning itself as a quality-focused European brand with a production capacity of approximately 150 MW per year - a figure that reflects a deliberate niche strategy rather than volume ambition. KIOTO Solar does not appear consistently on BloombergNEF Tier 1 bankability lists, which are dominated by large-scale Asian producers, but it holds meaningful credibility in German-speaking central Europe and has earned endorsement from Stiftung Warentest, Germany's rigorous independent consumer testing body. Trina Solar, founded in 1997 and headquartered in Changzhou, China, operates at an entirely different scale, shipping well over 80 GW of modules annually and holding continuous BloombergNEF Tier 1 status. That bankability classification makes Trina a default choice for project developers and lenders who require demonstrated financial stability from a manufacturer. In terms of global institutional footprint, Trina Solar outpaces virtually every European competitor by a wide margin.

KIOTO Solar's catalog covers residential rooftop and small-to-medium commercial applications, drawing on mono- and polycrystalline cell technology. The brand's modules are installed in an estimated one million homes across Europe, underscoring a solid residential track record. Available sources for 2024-2025 do not confirm whether KIOTO Solar has transitioned to next-generation TOPCon or HJT cell architectures. Trina Solar, by contrast, operates a well-documented and clearly segmented product hierarchy. The Vertex S+ series uses N-type i-TOPCon cells to target residential and commercial rooftops, achieving module efficiencies up to 22.5%, while the Vertex N lineup serves utility-scale ground-mount projects with bifacial dual-glass modules capable of exceeding 740 W under test conditions and efficiencies above 24%.

For most international buyers, Trina Solar is the more pragmatic default: its Tier 1 status simplifies project financing, its global supply chain and service network reduce long-term risk, and its technology roadmap is publicly documented and independently verified. KIOTO Solar is a compelling alternative for buyers who actively require European provenance - for instance, those navigating EU content requirements, public procurement rules, or sustainability mandates that favor local supply chains. The two brands are not directly interchangeable at utility scale, but for a mid-size residential or commercial installation in central Europe, either can deliver dependable long-term performance.

Written by claude-sonnet from the figures above.


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

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