With a photovoltaic system on the roof can make money

The “Renewable Energies Act (EEG) makes investments in photovoltaic systems interesting.

The use of solar energy is a double order of the day. The ever-rising energy prices affect the cash budget and permanently reducing the emission of carbon dioxide is supported. And there is perhaps even more funding opportunities.

What is photovoltaics?
In solar cells provides incident light that they generate electrical energy. In many solar photo cells together to create a greater amount of energy at a higher voltage per module to generate.

How does it work?
Solar panels are mounted at appropriate locations to form a solar generator. Optimum in Central Europe are places where the modules on a south oriented surface with a slope of about 30 ° can be built. Small deviations from this optimum reduces the yield only slightly. And the view of the sun should be possible without hindrance. Shading by trees, neighboring houses, or other shade as far as possible be avoided, because it is at the expense of earnings.

The solar panels provide direct current. If the generated energy into the grid, then one of the photovoltaic system an inverter. The converts the generated DC current into an alternating current at 50 Hz and 230 V in order. Thus the energy gained in the general power grid will be.

When does a photovoltaic system?
Whatever the answer, it depends. It is the view of the operator, the expenses for the construction and operation of the photovoltaic system with the recoverable revenue compared.

The revenue side has two components. Since the compensation is the one in the Renewable Energy Law is laid down. This is a fast and trackable clear wage. The other question is how much energy the system provides and how long does it. This is obviously some uncertainty in the calculation.

The solar measure the performance of a photovoltaic system for a measurement in kWp. The p stands for peak. For 1 kWp will be the traditional silicon modules, a module area of about 10 m² is required. As a rule of thumb is known that per 1 kWp in Central Europe a “power fruits” of 800 kWh can be expected.

Now for the investor, the big question, which at its location is really possible. The farther north, the worse is the yield. What matters is how much sunshine hours are for the specific location to be expected. Since the only thorough advice from independent experts. Because of the sunshine here at the site depends crucially on whether the photovoltaic system will result in a rewarding business or be a flop.

On the cost side, the investment and the life of the plant components, the important factors, manufacturers of solar modules provide guarantees for the functioning of their modules Energy Saving Appliances. Warranty periods between 10 years and 25 years are offered. In general, for the useful life of the modules numbers from 30 to 40 years. Guarantees over this period does not exist. The investment volume will be 2007 to 4500 to 6000 € / kWp quantified.

It is important to note that the lifetime of the inverter is limited. So every 10 years, this component is to be renewed.

Will the use of photovoltaic promoted?
In Germany, the guaranteed purchase price per kWh by the Renewable Energies Act (EEG) is the most important support, because a clear size calculation is available. The text of the EEG can be viewed. There is also the beginning of 2008 opportunities for subsidized loans from the KfW and may support individual German federal states. All this may change at any time. The overview on these issues, the Federal Association of Solar eV on its website promoting solar is an extensive information package ready.

Alternatively or in addition to a photovoltaic system Rainwater Collection Systems is also the construction and operation of a solar thermal system is an interesting way to save money.

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Tarpaulins energy and help to save power

The energy costs rise and rise. Many peasant house, therefore, now set at low energy houses. When you save energy but also help Tarpaulins.

Without the sun the man would not survive. Some, however, it can not get enough. These species are then in the local swimming pool in summer and in winter under the solarium. In the summer brings us the sun is not only positive Solar Tubes. Thus, during their highest level rooms extremely heated. This in turn leads to high energy consumption, should you have a air conditioning, a poor indoor climate and for bleaching of wood furniture. But what should you do? For houses, there is the case for blinds, awnings, or sun protection glazing. Another way of protection, the sun protective.

The structure
The sun protective film consists mostly of PET, which by the way bottles is well known. In most cases, the film is appropriate to house windows, but it can also be affixed to car windows. The reduction of solar radiation occurs primarily through reflection, since the foil is coated with metal. Some films, however, absorb the sun’s rays. In modern, high-quality sun slides it in there from at least six different layers Solar Attic Fans. The following layers are for an effective coating is necessary: A transparent protective film, an adhesive layer with UV absorbers, a clear or tinted polyester film, a Aluminiumbedampfung, again a clear polyester film and finally a scratch resistant coating. Reflecting Tarpaulins are also equipped with aluminum or other metals in a vacuum bedampft.

The sputtering
In the age of computer technology, there is already a new method for coating - the so-called sputtering. This arises from neutral particles, free electrons and positively ionized noble gas atoms a conductivity gas. During sputtering, the positive noble gas ions on the metal block that accelerates Recycled Paint. When contact with the metal surface metal atoms are then resolved at high speed on the PET film and then take very evenly with the slide link. This rather complicated-sounding process involves a very great advantage: Compared to the conventional vapor deposition can be different metals, this procedure may be used.

What does a sun protection?
The installation of a sun protective film has some advantages: Because many new homes in Germany are now on an air conditioning, a sun protective energy to significantly reduce Composters. Especially in times of climate debate, this is a useful byproduct. Who’s living rooms like so against prying eyes of outsiders would like to protect, with a mirrored sun protective nor an advantage. By Verspiegelung is the insight from the outside virtually impossible. In affixing Tarpaulins are very easy to handle. Unlike awnings or blinds, they can, without special tools or handicraft knowledge assembled Green Insulation. The cleaning of the window remains almost the same as for normal glass windows. The only difference is that no sharp or abrasive cleaning may be used. For the roof, there are now even have Teflon-coated protective film that no longer need to be cleaned. Due to the special surface of the dirt remains on the coating is not liable, and is simply the next downpour away.

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