Our company is concerned with solar- photovoltaic power stations design, installation and service. These power stations are able to change solar energy to electric energy. Solar energy belongs to inexhaustible power source. Its utilization has no influence on our living environment. The quantity of available energy depends on local climate condition of Earths surface. Solar energy can be utilized not only in the area with long sunshine time, but also in the area with higher altitude. There are relatively good conditions for solar energy utilization in Czech Republic, although solar energy quantity oscillates during the year and most of the solar energy is available at the time of the lowest heat consumption.
We offer:
Complete design, building permit, installation and commissioning of solar power plants with output above 100 kWp
Photovoltaic panels, inverters supply for small output for example family houses up to 10kWp and its installation, but also for big power plants
Consultancy energetic audit, build ability study, etc.
Consultation with grid system
Photovoltaic power stations payback period is about 8 to 9 years. Their advantage against the classic water heating panels is that you can immediately sell produced electric energy to the grid ( E-ON, CEZ ). You do not need to solve complicated and unprofitable hot water storage. The utilization of hot water goes down during summer (spare production), however electric energy from photovoltaic panels can be immediately sold to the grid, where it is subsequently consumed.
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Solar power plant Hrusovany u Brna installation, output 670kWp connected to the 22kV grid, built-up area about 20 000 m2. We continue our project up to total output 2,5 MWp here. |
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Solar power station Nova Ves v Horach preview, output 5kW connected to the 400V grid, built-up area about 20 m2 - before installation |
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Solar power station Nova Ves v Horach preview, output 5kW connected to the 400V grid, built-up area about 20 m2 - after installation |
Solar energy
There is 800 1250 kWh of incident sunshine energy vertically on one square meter annually. The energy rate is 75% in the period from April to October and 25% from November to March. Annual sunshine duration is between 1400 and 1800 hours in our condition. Annual sunshine duration is 1 600 hours in the mountains and 2000 hours in South Moravia lowlands. Total shinning consists of direct and diffused shinning. Diffused shinning comes up from solid and liquid segments, diffused in the atmosphere and their sunshine light reflection. (For example in the clouds, dust segments, etc.) Diffused shinning make up to 50% of total shinning.
Technology
Sillicium solar panels are used for electric energy production in most cases. Types of photovoltaic panels and collectors are following:
monocrystalline collectors consist from the only one crystal
polycrystalline collectors consist from many differently oriented crystals
amorphous collectors based on amorphous silicon layer
Solar monocrystalline elements panels
Solar panels with monocrystalline elements are most apply in our condition. Sillicium crystals are bigger than 10 cm. They are manufactured on the base of chemical procedure by pulling of melted sillicium in the form of diameter up to 300 mm. These panels efficiency is between 13 and 17%.
Solar polycrystalline elements panels
Panels are based on sillicium plates, same as monocrystalline panels. There is a difference in using of bigger quantity of smaller polycrystals. Polycrystalline panels efficiency is between 12 and 14% (rarely up to 16%). However their production is much easier, also cheaper and faster compare to monocrystalline panels.
Solar amorphous elements panels
Panels are based on vapor plating sillicium layer, which is thinly applied on glass or plastic sheet. These panels efficiency is slightly lower between 7 and 9%. These panels need 2,5 times bigger area for the same output as if monocrystalline or polycrystalline panels are used. Annual yield is indeed 10% bigger. The amorphous panels are presently the ones of the cheapest in the market. They are suitable especially where investor is not limited by the space.