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Costs and prices of solar installations for electricity, hot water per m²As fossil fuels become more expensive and scarce from year to year, the opportunities for alternative energy production are increasing. Including the photovoltaic, with which the solar systems work.
Here, the sunlight is used for the production of heat and / or electricity. This is very beneficial as sunlight is virtually infinite. In fact, the installation or conversion to solar energy is even promoted by the state. It is generally not unfavorable to use this opportunity. But of course, these systems have their price, so the cost-benefit factor must be well calculated.
By the way, in general, a distinction is also made between photovoltaics (electricity generation by means of sunlight) and solar thermal energy (heat generation by means of sunlight).
Costs and yields of photovoltaic
When installing a photovoltaic system, costs and revenues are reconciled beforehand. Of course, the installation should pay off in the long run, as it can be deducted from the tax for an additional 20 years. In order to calculate costs and revenues, the unit kWp (kilowatt peak) is used. This indicates how much electricity can be produced with a photovoltaic system a year. 1KWp is about 700 to 900 kWh of electricity, which a single solar module can produce at most (ie under optimal solar conditions). Incidentally, such a module is generally about one square meter in size. There is also the difference between flat and tube collectors.
is difficult, a universal price for photovoltaic systems
to call, since the plants are composed of different solar modules, the
Of course, prices vary, depending on performance, quality, size and individual return requirements. The higher the quality of the system, the more expensive it will be. Roughly enough, one could say that the prices per kWp are between 1500 and 3000 €. The higher the power consumption, the more modules are needed. Since a system can quickly bring together ten modules, € 30,000 will quickly come together. Of course, there are also the costs of installation and the system itself.
If you want to rebuild your house, you have to reckon with significantly more costs, as completely new lines have to be laid. But also the approvals and the order of the installation are not free, that also pays off. From this initial cost, it can be said that the plant will only pay for itself after ten to fourteen years.
Costs and yields of solar thermal energy
Of course you can not only generate electricity with solar energy. The light can also be used for water heating. Again, there are no always the same costs for the purchase and installation specify, because here too, prices fluctuate due to the quality and performance differences of the individual solar panels.
Flat plate collectors are generally recommended because they are more durable than tube collectors, but also much more expensive to buy. During the construction (or installation) of a solar thermal system, it should be considered in advance how much water is to be treated or stored, which is also reflected in the price.
The cost of an entire system (ie finished system, assembly, storage and all parts that are needed for commissioning and installation) are between 3000 and 9000 €, calculated on the individual square meter about 600 to 800 €.