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Manufacturer review

Gintech panels, read off the datasheets

Gintech Energy Corporation was a Taiwanese manufacturer of crystalline silicon solar cells and modules, founded in 2005 and headquartered in Zhunan, Hsinchu Science Park. The company produced mono- and multi-crystalline solar cells under its Diamond, Douro, and Phoenix product lines. In January...

Everything below is computed from those 7 datasheets: no score out of ten, no ranking of brands against each other, and nothing a manufacturer can pay to change. Where Gintech does not publish a figure, it is left out of the average rather than assumed.

Panels
7
models in the database
Average efficiency
16.6%
across the catalogue
Best efficiency
18.8%
their strongest module
Power range
255-365 Wp
smallest to largest
Bifacial share
0%
0 dual-sided models
Average warranty
25 years
guaranteed output term
01

The top of the range

The leaders of Gintech's own catalogue on the two figures a specification sheet leads with. Neither is a verdict: the most efficient module in a range is rarely the one that suits a given roof.

02

What the catalogue is made of

Cell technology across the market

Shares are of the 7 modules in the database, counted once each. A power ladder of one module counts as its rungs, which is why a large catalogue is not the same as a wide one.

Cell technology share of the catalogue
Unknown accounts for 71.4% of the catalogue - 5 of 7 modules.
Efficiency spread share of the catalogue
03

Strengths and gaps

Both lists are derived from the figures above rather than written about the brand. A gap here is a gap in what is published, which is not always a gap in what is built.

What this catalogue is good at
  • Strong warranty coverage averaging 25 years
  • Established manufacturer with 21+ years of experience
Where it is thin
  • Average efficiency of 16.6% is below the industry leading edge
  • Limited bifacial panel options
  • No high-power panels (500W+) available for commercial use
  • Limited adoption of latest cell technologies (TOPCon/HJT)
04

In short

Gintech: Gintech is a solid option, offering 7 panels suitable for residential installations. With an average efficiency of 16.6% and top models reaching 18.8%, their panels deliver competitive performance.
Common questions
Is Gintech a good solar panel manufacturer?
Gintech offers 7 solar panel models with an average efficiency of 16.6%. Check their full panel lineup on ComparePV to find the best model for your needs.
What types of solar panels does Gintech make?
Gintech manufactures panels ranging from 255W to 365W, covering both residential and commercial applications. Their portfolio includes Unknown (71%), PERC (29%) cell technologies.
How efficient are Gintech solar panels?
Gintech panels have an average efficiency of 16.6%, with their most efficient model reaching 18.8%. This puts them in an area where they may be focusing on value over peak performance in the current market.
What warranty does Gintech offer on their solar panels?
Gintech panels come with an average performance warranty of 25 years. This warranty guarantees that the panels will maintain a specified level of power output over time, protecting your investment against degradation beyond normal levels.
Are Gintech panels good for residential use?
Gintech offers panels in the residential-friendly 380-460W range. For home installations, look for models with high efficiency and compact dimensions to maximize power from limited roof space. Browse their full lineup on ComparePV to filter by power range and specifications.
05

Compared with

Build your own

A brand comparison weighs the two catalogues against each other - what each builds, at what efficiency, and how deep the range goes.