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

# Trina Solar vs Wattpower

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


## The two companies


| Attribute | Trina Solar | Wattpower |
| --- | --- | --- |
| Country | China | China |
| Headquarters | Changzhou | Nanjing |
| Founded | 1997 | 2020 |
| Employees |  | 11-50 |
| Annual capacity |  | 1-2 GW/year |
| Tier 1 | yes |  |
| Listed |  |  |
| Website | [https://www.trinasolar.com](https://www.trinasolar.com) | [https://www.watt-power.com](https://www.watt-power.com) |

WattPower Technology Co., Ltd is a Chinese solar module manufacturer headquartered in Nanjing, Jiangsu. The company specializes in high-performance photovoltaic modules utilizing 182mm large-size silicon wafers combined with PERC, multi-busbar, half-cell, bifacial, and high-density encapsulation technologies. It...


## Catalog & Power


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


## Reliability & Warranty


| Measure | Trina Solar | Wattpower | 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 | Wattpower |
| --- | --- | --- |
| \<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 | Wattpower |
| --- | --- | --- |
| \<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 | Wattpower |
| --- | --- | --- |
| 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 manufacturer headquartered in Changzhou, founded in 1997, and one of the longest-established names in the global photovoltaic industry. It has held BloombergNEF Tier 1 status continuously and in 2025 achieved a 100% bankability rating from BNEF - the eighth time it earned unanimous recognition from every survey respondent, meaning all polled lenders deemed it suitable for project financing. Annual manufacturing capacity exceeds 80 GW, and cumulative global module shipments surpassed 292 GW by mid-2025, placing Trina among the five largest module producers worldwide. Wattpower is a smaller Chinese solar brand distributed across several markets, but the company does not appear on BloombergNEF's Tier 1 list and carries a significantly lower institutional profile. On the dimension of global recognition and bankability, Trina Solar holds a clear and substantial advantage.

Trina Solar's current portfolio is built around the Vertex series, covering residential rooftop, commercial and industrial (C&I), and utility-scale ground-mount applications. The Vertex S+ line uses n-type TOPCon cell technology - confirmed by independent reviews and pv-magazine reporting from early 2026 - with modules reaching efficiencies above 24% in the latest iterations, and a dedicated full-black variant targeting residential aesthetics. The higher-wattage Vertex N range serves utility developers seeking lower balance-of-system costs at scale. Wattpower is generally positioned as a value-tier brand oriented toward residential and small commercial rooftop installations; publicly available technical data on its cell technology mix and verified efficiency figures is sparse, making a rigorous head-to-head product comparison difficult to substantiate.

For most buyers - homeowners, C&I developers, or project financiers requiring bankable equipment - Trina Solar is the more defensible default. Its Tier 1 status, established global supply chain, and 11 consecutive years as a PVEL Top Performer reduce risk across the project lifecycle. Wattpower may suit self-financed residential projects where budget is the primary constraint and Tier 1 certification is not required, but buyers should verify current warranty terms and local service availability before committing. The two brands are not interchangeable for financed or utility-scale projects; for small off-grid or owner-funded residential systems the gap narrows, yet Trina's broader installer network and documented after-sales support still give it a meaningful edge.

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 Wattpower](https://comparepv.com/ae-solar-vs-wattpower)
- [Trina Solar vs AEET](https://comparepv.com/trina-solar-vs-aeet)
- [AIKO vs Wattpower](https://comparepv.com/aiko-vs-wattpower)
- [Trina Solar vs AKCOME](https://comparepv.com/trina-solar-vs-akcome)
- [ARTsolar vs Wattpower](https://comparepv.com/artsolar-vs-wattpower)


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

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