How do I install solar panels ?

Installing solar panels begins with site selection

If you already have solar cells, you have to know what they type. known that polycrystalline (and similar to them on properties of single crystals) have a better performance than the thin-film elements .Consequently, the latter type of modules will need much more to get a sufficient number of kilowatts.On this basis, and should look for a place where the installation of solar panels will be made.For example, to be able to illuminate the premises and operation of electrical appliances at least a modest 2.5 kilowatt solar cells necessary to cover an area of ​​over 180 meters.

So, what is in your possession?First of all, the plot of land, however, free of built-up land, you can find a use for its intended purpose, ie to plant fruit and vegetable garden.In addition, in the area certainly has several residential and commercial buildings.Often, a garage is built separately from the house, while on the refuge for vehicles arranged attic, and this is another gable roof along with roof on the main residential building.You can also take into account sheds and pergolas, and only in extreme cases have solar cells directly on the ground.

Solar panels for homes - installation, orientation

Not knowing your preferences with respect to the solar cell, we make the assumption that the choice fell on polycrystalline.Their main advantage is that it will take much less space than for thin-film modules, but in this case there is one disadvantage - for polycrystalline require direct sunlight.This means that should a certain way to arrange the solar battery house, their installation must be carried out with the south orientation.

ideally suited for this purpose and the roof slope, the plane of which is turned towards the south-east or south-west. deviation even in 45 degrees of the vector sunlight will reduce the performance of the battery is only 71%, and accuracy of 15 degrees did not play any role. modules requiring directional solar radiation, usually put at an angle of 40 to 60 degrees, the season based on the low winter sun set at an angle at least 60 degrees.Is much more convenient in this respect to the thin film modules, they capture the scattered light, and thus can be directed in any direction.

This will allow you to take solar panels, each square meter of the roof on all buildings, without exception, with the result that you can get throughout the year for their needs a sufficient number of kilowatts.In the Moscow region for the year can get up to 997 kWh / m2.In the south of Russia, this figure will rise to 1300. Consequently, in the warm, sunny months, a medium-sized house can be provided with electricity fully even from thin-film batteries.

How does winter performance solar cells?

This question is very relevant for Russia and several CIS countries, where the cold months can be quite severe.Again, everything depends on the type of solar panels.Those that need direct sunlight, will lose effectiveness at a time, until the sky is covered with dense clouds.However, in the winter sun bake time can, in these days the performance poly- and monocrystalline blocks will be slightly higher than in summer.However, it should take into account the shortened daylight hours, which again will reduce daily production of electricity.

As for thin-film cells, capable of catching stray light, they will provide energy house all winter, regardless of the weather.

In the clear days, the performance of these modules may rise slightly above the normal 25% of the specified rating.This is due to the fact that the bright light is incident not only from the top, in the form of sunlight, and is reflected from the snow.In regard to the latter, by the way, quite often there are concerns that he is able to eliminate the current generation, covering the solar panels.But it should be noted that the modules are arranged at an angle, and on the smooth glass snowpack will not hold.In addition, the battery during the day are quite hot.