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GL Solar vs Trina Solar - solar panel manufacturer comparison

GL Solar
Italy Founded 2000
Read the GL Solar review
VS
Trina Solar
China Founded 1997 Tier 1
Read the Trina Solar review
At a glance

Trina Solar has the broader catalog (340 vs 13 models). Trina Solar leads on peak efficiency at 24.80%. GL Solar leans bifacial (100% of lineup).

Both catalogues are read from the manufacturers' own datasheets. A brand is not scored against the market here, only against the other brand on this page.

Panel models
13 340
Highest power
640 Wp 760 Wp
Best efficiency
23.6% 24.8%
Average efficiency
22.6% 21.7%
Bifacial share
100% 43%
Average warranty
30 yrs 28 yrs
01

The two companies

Company facts, not datasheet figures
GL Solar

GL Solar Energy s.r.l. is a small Italian company based in Marcianise (Caserta) specializing in the design, production, and installation of photovoltaic systems for residential and industrial applications. The company also distributes solar panels and related equipment, working with major international brands such as...

Founded
2000
Headquarters
Marcianise, Italy
Employees
1-10
Trina Solar
Founded
1997
Headquarters
Changzhou, China
Tier 1 bankable
Yes
02

Catalogue against catalogue

Averages over every model in the database
Metric GL Solar Trina Solar
Catalog & Power
Panel Models 13 340+327
Max Power 640 W 760 W+120 W
Avg Power 603 W+83 W 520 W
Efficiency
Max Efficiency 23.60% 24.80%+1.20 pp
Avg Efficiency 22.61%+0.89 pp 21.71%
Reliability & Warranty
Avg Temp Coefficient -0.274%/°C+0.028 -0.302%/°C
Bifacial Share 13 (100%)+57 pp 145 (43%)
Avg Warranty 30.0 yrs+1.8 yr 28.2 yrs

An average over a catalogue describes the range a manufacturer publishes, not the module you would buy. A brand with two flagship panels and eighty older ones averages worse than one that has retired its back catalogue.

03

What each of them builds

Cell technology across the market
Efficiency spread
Share of each catalogue in every efficiency band

GL Solar skews to higher efficiency: 38% of lineup is 23%+

Power spread
Share of each catalogue in every power band

GL Solar offers more 600W+ panels (77% of lineup)

GL Solar cell technology
Share of their models by cell architecture

Dominant cell tech: <strong>HJT</strong> (54%)

Trina Solar cell technology
Share of their models by cell architecture

Dominant cell tech: <strong>TOPCon</strong> (73%)

04

The flagships

Highest-power models from each brand
05

Written summary

Checking cache...

GL Solar does not appear on any BloombergNEF Tier 1 list, in PV-tech or PV Magazine coverage, or in major industry manufacturer databases. This absence makes it impossible to verify production scale, certifications, or founding history from public sources. It is likely positioned as a budget-tier or regionally distributed brand, but without bankability credentials it carries meaningful risk in project-financed installations. Trina Solar, by contrast, is one of the world's largest and most documented solar manufacturers, founded in 1997 and headquartered in Changzhou, China. The company has maintained a consistent BloombergNEF Tier 1 ranking across multiple consecutive quarters and shipped over 70 GW of modules in 2024, placing it among the top three global producers alongside JinkoSolar and JA Solar. Its manufacturing footprint spans China, Indonesia, and the United States, providing supply-chain resilience that matters for large procurement contracts.

Trina Solar's product families cover the full spectrum of deployment scenarios. The Vertex S+ line, built on TOPCon cell technology, targets residential rooftop and small commercial installations, offering efficiencies up to 22.5% and backed by a 25-year product and power warranty under the TrinaProtect program. The higher-wattage Vertex series - including a recently launched 760 W module at 24.5% efficiency - is aimed at utility-scale ground-mount and large C&I projects. The company has set numerous efficiency world records in laboratory conditions and has publicly committed to exceeding 26% TOPCon cell efficiency by 2027, signaling continued R&D investment.

For most international buyers, Trina Solar is the clear default choice: its warranties are independently verifiable, its bankability is confirmed by financiers, and its distribution network is mature. GL Solar could be considered only where cost pressure is extreme and where the buyer can independently verify warranty terms through a local distributor, since the available public record is too thin to assess long-term reliability. The two brands are not interchangeable in any meaningful commercial sense.

Generated by Claude Sonnet · 2026-06-17

06

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Something missing from a catalogue? Both lists are built from the datasheets in the database. If a model is absent, it has not been ingested yet.

Shop prices: See 2 GL Solar offers · See 241 Trina Solar offers

Comparisons are computed from manufacturer datasheets held in the ComparePV database and may not reflect a brand's complete current lineup. Nothing on this page is paid placement.