PV Modules Information
Solar modules are the core of a photovoltaic system and generate electrical current from sunshine. They are usually mounted on the roof of a house and therefore must be particularly resistant to environmental conditions and be able to withstand burden such as snow. Several types are available and their make and number will determine the output of the entire system.
How do solar panels produce electricity?
Photovoltaic modules (PV modules) convert sunlight into electrical energy. The solar cells inside each panels are responsible for this. They are protected on both sides by a pane of tempered glass and a plastic EVA film. The sun’s rays penetrate these two transparent layers to reach the solar cells.
Since an individual solar cell produces only a little electricity, several of them are combined per solar panel. Inside these cells is a layer with a surplus of positive charge carriers (p-layer) and a second layer with a surplus of negative charge carriers (n-layer). An internal electrical field builds up at the so-called p-n junction (the interface between the layers) which is normally made of silicon. This leads to a charge separation of the charge carriers released by the incidence of light. The electrical charge can be made usable via metal contacts. Direct current then flows if an electrical consumer is connected.
The right solar module for your needs
With such a wide ranging selections available on the market, it can be difficult to select the right solar panel. The search for a suitable solar module can be aided by answering the following questions:
- What output should be achieved?
- What should the system look like?
- Should a roof-integrated or a rooftop system be installed?
- In which region will the system be built?
- What purpose will this system fulfill?
There are two basic types of solar cells used in modules production; monocrystalline and polycrystalline. All SOLARWATT Australia solar panels are made with monocrystalline cells which have an excellent efficiency of 16 to 20%. Though both cell types are particularly well suited to private use, polychrystalline cells have a lower efficiency range of 12 to 16%.
Glass-glass or glass-foil
Aside from how much power they can yield, resistance to environmental factors plays a big role in how solar modules perform. Glass-foil modules are a tradition construction with a pane of tempered glass facing up towards the sun, and a plastic foil composite on the backside of the panel. Glass-glass modules, however, are a double glass-pane style with tempered glass protection on both sides. Glass-glass modules are extremely weather resistant, very durable, and have a high yield reliability. Despite the additional glass pane, glass-glass modules are comparable in weight to traditional modules and are just as easy to assemble and install.
SOLARWATT quality – Photovoltaic systems made in Dresden Germany
SOLARWATT glass-glass modules are more durable and resilient than any of their predecessors! The innovative glass-glass technology makes them virtually indestructible against all weather influences and stress (such as hailstones or dust storms) That’s why SOLARWATT can offer the best panel guarantees on the global market:
- 30-year performance guarantee
- 30-year product guarantee
You can centrally control the energy flow in your household with the SOLARWATT EnergyManager. Learn what else the EnergyManager can do here.
SOLARWATT guarantees all glass-glass modules for 30 years! That’s the world’s leading solar panel warranty. And our batteries come with a 10 year warranty. Click below to find out more now.