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

# Trina Solar vs VNS Bulgaria

Trina Solar has the broader catalog (340 vs 0 models). Trina Solar leans bifacial (43% of lineup).


## The two companies


| Attribute | Trina Solar | VNS Bulgaria |
| --- | --- | --- |
| Country | China | Bulgaria |
| Headquarters | Changzhou | Kurdjali |
| Founded | 1997 | 2009 |
| Employees |  | null |
| Annual capacity |  | null GW/year |
| Tier 1 | yes |  |
| Listed |  |  |
| Website | [https://www.trinasolar.com](https://www.trinasolar.com) | [https://solarstreetlighteu.com](https://solarstreetlighteu.com) |

VNS Bulgaria Ltd. was established in 2009 and focuses on manufacturing and construction of solar street lighting, solar park lighting, LED street lamps, photovoltaic systems, and various other solar systems. The company utilizes innovative technologies in its designs and constructions and has completed over 1000...


## Catalog & Power


| Measure | Trina Solar | VNS Bulgaria | Margin |
| --- | --- | --- | --- |
| Panel Models | 340 | 0 | +340 |
| Max Power | 760 W | 0 W | +760 W |
| Avg Power | 520 W | 0 W | +520 W |


## Efficiency


| Measure | Trina Solar | VNS Bulgaria | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.80% | - |  |
| Avg Efficiency | 21.71% | - |  |


## Reliability & Warranty


| Measure | Trina Solar | VNS Bulgaria | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.302%/°C | - |  |
| Bifacial Share | 145 (43%) | 0 (0%) | +43 pp |
| Avg Warranty | 28.2 yrs | - |  |


## Efficiency distribution

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


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


## Power distribution

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


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


## Cell technology

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


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


## 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

Trina Solar is a Chinese solar module manufacturer headquartered in Changzhou, founded in 1997. The company has earned a place on BloombergNEF's Tier 1 PV Module Manufacturer list eight consecutive times and holds a 100% bankability rating from all BNEF respondents, a distinction shared by very few producers at this scale. Annual manufacturing capacity exceeds 80 GW, placing Trina consistently among the top five module producers worldwide, and the company surpassed 292 GW in cumulative module shipments globally as of mid-2025. VNS Bulgaria Ltd., by contrast, is a Bulgarian-based distributor and wholesaler of photovoltaic components rather than a manufacturer in its own right. It sources and resells panels from third-party brands including Trina Solar, JA Solar, Canadian Solar, Jinko Solar, and LONGi, meaning its product range reflects the inventories of its suppliers rather than any proprietary manufacturing capability. In terms of institutional footprint, industry recognition, and supply chain depth, the two entities operate on entirely different levels.

Trina Solar's product lineup is built around its Vertex platform. The Vertex S+ series targets residential and small commercial rooftop installations, featuring N-type TOPCon bifacial double-glass panels with efficiency reaching up to 22.5% and product and performance warranties of up to 30 years - competitive with the premium segment of the global market. Larger-format Vertex modules, exceeding 580 W, are designed for commercial C&I flat roofs and utility-scale ground-mount projects. The March 2026 announcement of a 485 W panel with 24.3% efficiency signals continued investment in cell performance. VNS Bulgaria carries no proprietary product line; the modules it sells are manufactured elsewhere, and warranty terms and technical specifications are governed entirely by the original manufacturer, not by VNS Bulgaria itself.

For any buyer evaluating these two names as alternatives, the comparison is asymmetric. Trina Solar is a fully integrated manufacturer with verified Tier 1 bankability, a deep technology portfolio anchored in proven TOPCon cells, and decades of shipment history. VNS Bulgaria is a regional distribution intermediary. A buyer can purchase Trina Solar panels through VNS Bulgaria, but the two brands are not interchangeable: one produces solar modules and the other sells them.

Written by claude-sonnet from the figures above.


## Other comparisons

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


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Source: https://comparepv.com/trina-solar-vs-vns-bulgaria

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