House Systems

Solar power from your own solar system is one of the most environmentally friendly and inexpensive ways to supply your household with electricity. Buying a solar system is worthwhile for more and more people.

There are so many kinds of solar types and offerings we only want to describe a part here.

For a detailed calculation and offer, please contact our specialist department.
We and our partners will advise you to your complete satisfaction and offer you the appropriate system for your needs.

On-Grid und Off-Grid

Grid ist zunĂ€chst nur das englische Wort fĂŒr Netz – gemeint ist im Zusammenhang mit der Photovoltaik ein vorhandenes Stromnetz. FĂŒr die Photovoltaik sind dabei die beiden Begriffe On-Grid und Off-Grid wesentlich, da sie verschiedene Konzepte von Photovoltaikanlagen bezeichnen.

On-Grid System in der Photovoltaik

Bei einem On-Grid System handelt es sich um eine Photovoltaikanlage, die Strom erzeugt, wobei dieser Solarstrom dann in ein vorhandenes, öffentliches Netz eingespeist wird. Dazu ist nebem dem Solargenerator (also den zusammengeschalteten Modulen) ein Wechselrichter notwendig, da in öffentlichen Stromnetzen Wechselstrom fließt. Bei On-Grid Systemen wird in der Photovoltaik zwischen verschiedenen Konzepten unterschieden:

  • On-Grid Systeme, bei denen die Photovoltaikanlage genutzt wird, um einen Verbraucher parallel zum öffentlichen Netz zu versorgen. Dabei wird die dezentrale Solarenergie nahe beim Verbraucher produziert, sodass große Transportverluste ausgeschlossen werden können.
  • On-Grid Systeme, bei denen die Photovoltaikanlage den Verbraucher alternativ zum öffentlichen Netz versorgt. Dabei ist der Verbraucher zwar auch an das öffentliche Netz angeschlossen, der Solarstrom wird dezentral, also verbrauchsnah produziert. Anstatt ÜberschĂŒsse aber in das öffentliche Netz einzuspeisen, werden diese vorrangig in einem Energiespeicher gespeichert. Dieses On-Grid System sorgt vor allem fĂŒr eine höhere Versorgungssicherheit und wird hĂ€ufig bei schwĂ€cheren Versorgungsnetzen eingesetzt, als sogenanntes Backup-System.

On-Grid Systeme, die Verbraucher parallel zum öffentlichen Netz versorgen, sind also die bekannten netzgekoppelten Anlagen, wie sie in Deutschland und anderen IndustrielĂ€ndern verbreitet sind. On-Grid Systeme, die eine sogenannte Backup-Funktion ausĂŒben, werden eher in SchwellenlĂ€ndern oder EntwicklungslĂ€ndern genutzt.

Off-Grid System in der Photovoltaik

Bei einem Off-Grid System handelt es sich um eine Inselanlage. Eine solche Photovoltaikanlage ist also nicht an ein öffentliches Stromnetz angeschlossen und funktioniert nur mit Energiespeicher. Solche Off-Grid Systeme oder Inselanlagen hatten in den AnfĂ€ngen der Phovoltaik grĂ¶ĂŸere Marktanteile. Heute kommen sie in erster Linie in FerienhĂ€usern oder BergĂŒhĂŒtten zum Einsatz, die wegen der großen Entfernung nicht an ein öffentliches Netz angeschlossen sind. Off-Grid Photovoltaiksysteme werden aber auch in Booten oder Wohnmobilen genutzt. Ein weiterer Anwendungsbereich fĂŒr Off-Grid Photovoltaik liegt zum Beispiel im Betrieb von Entsalzungsanlagen oder Wasserpumpen. Ihr Marktanteil wĂ€chst vor allem in EntwicklungslĂ€ndern. Nach SchĂ€tzungen von Greenpeace sollen bis 2030 zwei Milliarden Menschen ĂŒber Off-Grid Systeme mit Strom versorgt werden.

The solar modules are the crucial component of a photovoltaic system. Depending on their size, a different number of solar cells are interconnected in them. For a photovoltaic system, several solar modules are in turn connected to form so-called strings. Several strings then make up the entire solar generator.
Function of a solar cell

A solar cell is ultimately a semiconductor diode. Here the radiation energy is converted into direct current. This can be explained physically by the so-called photo effect. Different doped semiconductor layers are put together in a solar cell. At the junction between these two layers (one positive, the other negative), the p-n junction, an electric field is created that separates the two layers and prevents the charges from equalizing. At the same time, the boundary layer allows the current to only flow in one direction when the circuit is closed.

Which solar modules are there?
4 common solar module types in comparison

monocrystalline PV modules.
polycrystalline PV modules.
Thin-film PV modules (also simply called thin-film modules)
CIGS PV modules (also simply called CIGS modules)

The selection of photovoltaic modules from different brands, manufacturers and performance classes is large and confusing. After all, there are now a large number of manufacturers, primarily from Asia, who produce high-quality PV modules and bring them onto the global market at increasingly lower prices.

These crystalline modules, which include polycrystalline but also monocrystalline solar modules with a particularly high level of efficiency, offer different performance and thus yield rates that should be taken into account when planning your own photovoltaic system. As a rule, a distinction can be made between simple standard modules, special design variants or high-performance photovoltaic modules.

High-performance photovoltaic modules

Anyone interested in buying a PV system will quickly find out that there are now a wide variety of types of solar modules. In addition to the classic poly- or monocrystalline modules, amorphous or flexible solar modules are also mentioned again and again. These consist of a thin layer of solar cells that is applied to a suitable carrier material. However, the efficiency of such modules is usually low, which is why they have not yet been used in conventional solar systems. Instead, monocrystalline modules in particular are enjoying steadily growing popularity.

In short: Monocrystalline high-performance modules have a high degree of efficiency. As a result, they promise higher yields and excellent low light behavior. While the standard and design solar modules deliver an average output of 300 Wp and are therefore ideally suited for roofs with sufficient space, the high-performance PV modules are therefore primarily predestined for roofs with little space. With efficiencies of up to 22%, many of the monocrystalline modules offer an output of over 350 Wp.

But the monocrystalline modules are not only used in PV systems on small roofs. More and more, they are also chosen because of their black color, which goes back to their form of manufacture. In contrast to the bluish shimmering polycrystalline solar modules, several silicon crystals are not used here. Instead, a monocrystalline solar cell consists of a single silicon crystal. This makes the solar cell appear black to anthracite and at the same time ensures a higher degree of efficiency.

In this post we introduce you to some of the most famous high-performance solar modules. In this way you get an initial overview of the individual models and find out what properties they bring with them. You can also select some of the models as part of your request in the zolar online configurator. Here you have the opportunity to choose between standard solar modules, design photovoltaic modules and high-performance PV modules with increased yields.

Off Grid Solar Offers:
Solar Home System:
Street Lights

Solar Lamps

A-Price List of Solar Lamp 2-1pdf-1


Other Solar Products like Inverter , Charge Controller, Battery and so on demand