GERMAN vs CHINESE SOLAR PANELS.


THE DIFFERENCE. German made Perth Solar Warehouse solar energy systems vs the rest. See the differences below in comparative, side by side detail. Be guided by what is important to you.

 
INDUSTRY PRESENCE.

When quality surpasses quantity. A company’s ability to manufacture successful products over time is defined by time itself. Many things done right will always take you further.

SOLARWORLD (MADE IN GERMANY)
42 years
SOLARWATT (MADE IN GERMANY)
24 years
Premium Chinese AVERAGE
15 years
Tier 1 Chinese AVERAGE
5 Years
PRODUCT WARRANTY.

Comprehensive warranties define proven durability. A manufacturer’s product warranty is a testament to any individual products build quality, and it’s suitability for a given location over time.

SOLARWORLD (MADE IN GERMANY)
20 years
SOLARWATT (MADE IN GERMANY)
30 years
Premium Chinese AVERAGE
12 years
Tier 1 Chinese AVERAGE
10 Years
 
PERFORMANCE WARRANTY.

Better performance guarantees. All solar panel performance depreciates in any environment different from Standard Test Conditions. An excellent solar panel negotiates degrading environmental factors to deliver peak performance for longer.

Performance warranty period:

SOLARWORLD (MADE IN GERMANY)
30 Years
SOLARWATT (MADE IN GERMANY)
30 Years
Premium Chinese Average
25 Years
Tier 1 Chinese Average
25 Years

Output degradation over warranty period:

SOLARWATT (MADE IN GERMANY)
90%
SOLARWORLD (MADE IN GERMANY)
90%
Premium Chinese Average
80%
Tier 1 Chinese Average
80%

Performance degrading factors to consider: luminous intensity, UV radiation, temperature stress, ammonia/ agriculture, salt spray, hail, high winds, localised periodic shading.

CONSTRUCTION.

Superior construction produces more power, longer. Fully automated systems combined with strict material flow monitoring, regular electrical and visual measurements, as well as intermediate process inspections deliver solar panels built to last.

Solar cell production:

SOLARWORLD & SOLARWATT
Full Automation
Tier 1 Chinese Average
Partial Automation

Eliminating the need for manual handling of a solar panels most delicate component ensures a solar cells long-term integrity.


Protective glass and film:

SOLARWORLD & SOLARWATT
Full Automation
Tier 1 Chinese Average
Moderate Automation

Solar cells are protected from the elements with the precise implementation of the associated solar glass and rear backsheet (film).


Electrical junction box:

SOLARWORLD & SOLARWATT
Full Automation
Tier 1 Chinese Average
Partial Automation

The junction box on the rear of the solar panel requires flawless functionality and insulation to endure the expected environmental stresses once installed.


Module frames and sealing material:

SOLARWORLD & SOLARWATT
Full Automation
Tier 1 Chinese Average
Minimal Automation

Providing the finish touches to the visual aesthetics, this is also the final seal to completely encapsulate the delicate solar cells to ensure zero ingress for over 30-years.

TESTING.

Diverse Long-term Testing Procedures. Extensive testing holds material selection and the manufacture of any end product to account. Given the nominated life expectancy, solar panels need in-depth testing to ensure the stamped performance or greater when subject to intense environmental factors daily.

Climate chamber testing (-40 to +85 deg C):

SolarWorld
9125 Cycles
Tier 1 Chinese Average
200 Cycles

A highly accelerated life cycle test which simulates 9125 cycles, a workload of 25 years. IEC standard requires on 200 cycles


Module breakage test & hail impact test:

SolarWorld & SOLARWATT
535 gm
Tier 1 Chinese Average
7.53 gm

A natural hailstorm is replicated by dropping a 535-gram, 51mm diameter steel ball onto a solar panel from a height of 4m. This is repeated 20 times at 11 different points of impact. IEC only specifies a standard weight of 7.53 grams.


Hotspot testing:

SolarWorld & SOLARWATT
100%
Tier 1 Chinese Average
1%

Thermography and electroluminescence measurements detect intermediate resistance, thermal zones or conduction loss in solar cells, contacts and junction box.


Hemispheric lighting test:

SolarWorld
100%
Tier 1 Chinese Average (N/A - 0%)
Indoor Only

Performance analysis which examines the behaviour of the solar modules under conditions as authentic as possible, simulating daily and annual changing light conditions, including related temperature variations.


Test environments:

SolarWorld & SOLARWATT
Indoor & Outdoor
Tier 1 Chinese Average
Indoor Only

Testing the weathering resistance of a solar module in the open environment and not just under laboratory conditions.


Advanced mechanical load test:

SolarWorld & SOLARWATT
Extreme
Tier 1 Chinese Average
Mild

A test simulating extreme wind pressure and suction forces affecting solar modules such as a severe winter and higher altitudes in which solar modules are exposed.


Salt spray testing (maritime climates):

SolarWorld & SOLARWATT
100%
Tier 1 Chinese Average
2%

A solar modules ability to fulfill all requirements of DIN EN 61701 salt spray test.


Desert condition testing:

SolarWorld & SOLARWATT
100%
Tier 1 Chinese Average
1%

A solar modules ability to sustain electrical and structural integrity through extreme environmental conditions such as high wind speeds, temperature variations and extreme sand storms in accordance with DIN EN 60068-2-68.


UV light ageing test (kWh/m2):

SolarWorld
3000
Tier 1 Chinese Average
15

3000 kWh/m2 simulates 57 years of UV radiation exposures at 60 degree C. IEC standard requires a UV dose of only 15 kWh//m2, despite the annual UV radiation in Central Europe alone being 50 kWh/m2.


Electrical testing:

SolarWorld & SOLARWATT
Dry & Wet
Tier 1 Chinese Average
Dry Only

Testing carried out on both wet and dry conditions including alternating temperature cycles. In addition, applying a partial discharge test to determine the modules reaction to high voltages.


Ammonia resistance testing (high-level):

SolarWorld & SOLARWATT
100%
Tier 1 Chinese Average
1%

Utilising three independent inspection marks (DLG, TUV Rheinland and SGS), laboratory tests are conducted to determine if a solar module can withstand the effects of ammonia in barn air over a 20-year period.


Ensure your short and long-term solar production and ultimate satisfaction by understanding what truly defines a solar panel. Success is in the detail. This information has been obtained and interpreted in conjunction with this and other information available for download in definitive detail: The Advantage of Quality – Download >

INTERNATIONAL AWARDS

Independent awards from known global industry institutes. Why is this important? The simple answer is the rated information on the product data sheet and on the specification plate of the solar panel is accurate or better, in a diverse array of environments and conditions. In most cases the product actually exceeds the expected performance. Always remember, no 2 solar installations are the same, neither should the choice of solar panel be the same.

Just because an individual or brand states 25 years performance doesn’t guarantee 25 years performance is possible.

2007

Photon Award

2007

Photon Award

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2009

Photon Award

2009

Photon Award

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2010

Photon Award

2010

Photon Award

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2013

PV Magazine Test Award

2013

PV Magazine Test Award

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