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Manufacturer review

CSUN panels, read off the datasheets

China Sunergy (CSUN) is a Chinese manufacturer of solar cells and photovoltaic modules headquartered in Nanjing, Jiangsu. The company produces high-efficiency mono- and multicrystalline solar cells and modules from production facilities in China and, historically, Turkey. It was formerly listed on NASDAQ...

Everything below is computed from those 35 datasheets: no score out of ten, no ranking of brands against each other, and nothing a manufacturer can pay to change. Where CSUN does not publish a figure, it is left out of the average rather than assumed.

Panels
35
models in the database
Average efficiency
20.2%
across the catalogue
Best efficiency
21.6%
their strongest module
Power range
325-670 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 CSUN'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.

Most efficient module efficiency
1 CSUN670-132M Monocrystalline 670 Wp 21.6% 2 CSUN665-132M Monocrystalline 665 Wp 21.4% 3 CSUN600-156M Monocrystalline 600 Wp 21.4% 4 CSUN460-120M Monocrystalline 460 Wp 21.3% 5 CSUN550-144M Monocrystalline 550 Wp 21.3%
Sort the whole catalogue by efficiency
Highest power nameplate output
1 CSUN670-132M Monocrystalline 21.6% 670 Wp 2 CSUN665-132M Monocrystalline 21.4% 665 Wp 3 CSUN660-132M Monocrystalline 21.2% 660 Wp 4 CSUN655-132M Monocrystalline 21.1% 655 Wp 5 CSUN650-132M Monocrystalline 20.9% 650 Wp
Sort the whole catalogue by power
02

By what the array is for

Three cuts of the same catalogue, each ordered by efficiency inside its band. An empty column means the brand does not build for that case.

For a house roof 380-460 Wp
1 CSUN460-120M Monocrystalline 460 Wp 21.3% 2 CSUN455-120M Monocrystalline 455 Wp 21.1% 3 CSUN380-120M Monocrystalline 380 Wp 20.9% 4 CSUN450-120M Monocrystalline 450 Wp 20.9% 5 CSUN445-120M Monocrystalline 445 Wp 20.6%
For a commercial array 500 Wp and up
1 CSUN670-132M Monocrystalline 670 Wp 21.6% 2 CSUN665-132M Monocrystalline 665 Wp 21.4% 3 CSUN660-132M Monocrystalline 660 Wp 21.2% 4 CSUN655-132M Monocrystalline 655 Wp 21.1% 5 CSUN650-132M Monocrystalline 650 Wp 20.9%
03

What the catalogue is made of

Cell technology across the market

Shares are of the 35 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
PERC 94.3% 33 TOPCon 5.7% 2
PERC accounts for 94.3% of the catalogue - 33 of 35 modules.
Efficiency spread share of the catalogue
<20% 31.4% 11 20-21% 37.1% 13 21-22% 31.4% 11
04

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
  • Tier 1 bankable manufacturer - recognized by major financial institutions
  • Strong warranty coverage averaging 25 years
  • High-power panels available (up to 670W) for commercial applications
  • Established manufacturer with 22+ years of experience
  • Large-scale production capacity of 2-3 GW
Where it is thin
  • Average efficiency of 20.2% is below the industry leading edge
  • Limited bifacial panel options
  • Limited adoption of latest cell technologies (TOPCon/HJT)
05

In short

CSUN: CSUN is a solid option, offering 35 panels suitable for both residential and commercial buyers. With an average efficiency of 20.2% and top models reaching 21.6%, their panels deliver competitive performance. As a Tier 1 bankable manufacturer, they offer strong financial backing and long-term reliability.
Common questions
Is CSUN a good solar panel manufacturer?
CSUN offers 35 solar panel models with an average efficiency of 20.2%. They are a Tier 1 bankable manufacturer, recognized by major financial institutions for reliability. Check their full panel lineup on ComparePV to find the best model for your needs.
What types of solar panels does CSUN make?
CSUN manufactures panels ranging from 325W to 670W, covering both residential and commercial applications. Their portfolio includes PERC (94%), TOPCon (6%) cell technologies.
How efficient are CSUN solar panels?
CSUN panels have an average efficiency of 20.2%, with their most efficient model reaching 21.6%. This puts them at a solid mid-range level in the current market.
What warranty does CSUN offer on their solar panels?
CSUN 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 CSUN panels good for residential use?
CSUN 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.
06

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.

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