When installing a photovoltaic power station, should we choose single-glass or double-glass modules

With the development of green energy, the installation of photovoltaic power
stations has garnered increasing attention. When selecting photovoltaic modules,
monoglass and double-glass modules are two common choices. So, which one should
you choose? Below, we will provide a detailed comparison of the advantages and
disadvantages of monoglass and double-glass modules to help you make an informed
decision.

Characteristics of monolithic glass module

A single-glass module refers to a photovoltaic module that is covered on the
front side with a layer of glass. Its main advantages lie in its simple
structure and light weight, which result in a relatively low price. Single-glass
modules are typically suitable for situations where space is limited, such as
roof installations or small photovoltaic systems. However, the disadvantages of
single-glass modules are also quite evident:

1. Poor durability: Due to only one layer of glass protection, the wear
resistance and corrosion resistance of single-glass components are relatively
low.

2. Limited power generation: Single-glass modules can only generate
electricity from the front side, and cannot receive reflected light from the
back side, thus resulting in relatively low power generation.

3. Shorter warranty period: The warranty period for single-glass components
is typically 25 years, which is shorter than the 30 years for double-glass
components.

Characteristics of double-glass components

Double-glass modules refer to photovoltaic modules consisting of a composite
layer made up of two sheets of glass and solar cells. In recent years, more and
more users have opted for double-glass modules when installing photovoltaic
power plants, primarily due to their significant advantages:

1. Longer warranty period: The warranty period for double-glass components is
typically 30 years, which is longer than the 25 years for single-glass
components.

2. Higher power generation: The back side of the double-glass module can also
generate electricity by receiving reflected and scattered light from the
surrounding environment, which can increase the power generation by about
10%-30%.

3. Better wear resistance and insulation: Glass has superior wear resistance
compared to backsheets, and its insulation performance is also better, allowing
it to meet higher system voltages and saving system costs for power
stations.

4. Lower attenuation rate: The attenuation rate of ordinary components is
approximately 0.7%, while that of double-glass components is around 0.5%,
resulting in higher long-term power generation efficiency.

5. Higher fire rating: The fire rating of double-glass components has been
upgraded from Class C to Class A, making them more suitable for residential
buildings, chemical plants, and other areas where fire hazards need to be
avoided.

6. Better environmental performance: Glass is composed of inorganic silicon
dioxide, which is the same substance as sand. Its weather resistance and
corrosion resistance surpass any known plastic, making it more environmentally
friendly.

Other advantages of double-glass components

In addition to the aforementioned major advantages, double-glass components
also possess several other benefits, including:

1. Aluminum-free frame design: Double-glass components do not require
aluminum frames, making them easier to clean and reducing dust accumulation on
the component surface, which is beneficial for increasing power generation. At
the same time, the absence of aluminum frames also reduces the possibility of
PID attenuation.

2. Better heat dissipation: The double-glass module, without a back plate,
boasts better heat dissipation, which helps maintain high power generation
efficiency in high-temperature environments.

3. Reduce local hidden cracks: The structural form of the front and back
glass panels in double-glass components reduces the occurrence of local hidden
cracks during construction and installation.

conclusion

Taking into account the pros and cons of both single-glass and double-glass
components, double-glass components are undoubtedly a superior choice for users
who intend to install photovoltaic power stations. Although double-glass
components are relatively more expensive, their advantages such as longer
warranty periods, higher power generation, better wear resistance and
insulation, lower attenuation rates, and higher fire resistance make them more
cost-effective in the long run and align more closely with the development
philosophy of green energy.

Of course, the specific choice of components depends on the actual situation.
If you have any questions about the selection of photovoltaic components or
require more detailed consultation, please feel free to contact us. We will
provide you with professional advice and solutions to help you build an
efficient and environmentally friendly photovoltaic power station.