The energetic costs of the families are in continuous increase because of the constant increments of the price of the oil. Such tendency will not be able that to continue in the course of the next years also because of the demanded crescent of energy from part of the emergent countries. From today the solution is, enough to resort to the so-called rinnovabili energies that concur to produce to heat and electric power from the sun, wind and from the biomasses.
Thanks to the modern technologies it is moreover possible to obtain meaningful reductions in the consumptions also for who resorts to the conventional sources. A good for the pocketbook of the consumers and a good for our atmosphere, since draft of solutions to low cost, reliable and rispettose of the nature. One opens cosi new and an interesting one understood it that it allows to maintain the confort that the modern technique has conquered in completely ecological way, so as to to preservare the patrimony of existing resources on the earth Rinnovabile energy The Sun can give also 100% of the requirementses of necessary electric power to us to our room.
Unfortunately the fotovoltaici solar systems have one rendered the much lowest one of the thermal solar systems, than they are used in order to produce warm water, and therefore greater surface of the roof is necessary to occupy one. With the exception of the thermal systems, than they cannot too much be sovradimensionionati regarding our necessities, otherwise during the summer we would find again ourselves with hundred of liters of hot water without knowing what to make some, the fotovoltaici systems can come determine the proportions so as to to produce to all the energy to you of which we have need, inasmuch as the energy in surplus we can yield it to the Enel, than then renders us of new when of it we have really need.
Practically the Enel makes us from great tank: it takes advantage of the surplus of energy p rodotta in summer and it renders us in winter: unfortunately not possible what with the warm water. The back of the medal is that unfortunately the fotovoltaici solar systems cost still a lot, therefore not always can be allowed a sufficient system us to cover our requirementses current anniversary electrical worker. I can sell current to the Enel? I can sell current to the Enel? In this moment NOT, I can only yield it and satisfied only the difference between what consumption and what I produce. If I produce more current than which consumption, such excess will be conteggiato in the successive year, but it will not come in some way paid from the Enel. To exchange current with the Enel has a cost of approximately 30 Euro the year, because this is the cost for the chartering of the contatore of purchase of the energy produced from the fotovoltaici modules. Therefore as solution is not much expensive, if it is considered that instead to equip of 1,000 easy batteries Euro can cost also, beyond to the problematic ones of usury of the same batteries that have one life of approximately 10-15 years But if posseggo a power line from 3KW of power, I must be equipped of a photovoltaic system from 3 KWp? But if posseggo a power line from 3KW of power, I must be equipped of a photovoltaic system from 3 KWp? This is the most frequent question, and the answer is: absolutely not! The photovoltaic system a nearly supplies constant energy that comes immessa in continuous way in the Enel net finchè is the Sun. The solar circuit is nearly a circuit to par you, while the current electrical worker who is necessary for the room comes captured directly from the Enel: in this way I have a power on hand much elevated (3 KW or more) every time that of it I have need. A solar circuit of 1.200 Wp can produce sufficient energy in order to cover a room with a consumption anniversary of approximately 2.000 KWh, therefore a 3-4 room persons with attention consumptions electrical workers. While for a room where the consumptions just “are not oculati” can be thought to a photovoltaic system from 2.000-2.400 Wp, but never Wp is on the whole not advised a photovoltaic system from 3.000, in how much in this case it would be risked to produce more energy uselessly than how much of it is necessary, and in this moment the enel it would not pay to us, but it would hold it in credit for the successive year, with the risk effectively to lose it. Which type of system I choose? Which type of system I choose? In the first place it is necessary to establish, based on the zone where it is lived, or based on the own convictions ecologists, than type of photovoltaic module it is wanted to be used: in this page you can see the main differences, the advantages and the disadvantages of the fotovoltaici modules in amorphous silicon, regarding those in monocrystalline silicon or policristallino, and viceversa. Entering instead in the merit of the fotovoltaici solar systems, they exist some fundamentalally of two types: System to fotovoltaici modules with logon to the net Enel electrical worker (grid connected) these types of fotovoltaici solar systems produce to current electrical worker who comes immessa, once converted in alternating current to 220 Volt, in the Enel net, for being used in your city. This happens through an installed special contatore from the Enel: in this way we do not need of expensive batteries in order to conserve the produced electric power, but we can anytime resume it from the Enel, only paying the difference between that one produced and that one consumed. How much employment to damp the system? How much employment to damp the system? The calculation in this case is not particularly simple, however considering a minimal life of the solar system of 30 years, expenses d the eventual maintenances, the increase of the cost of the same ones and! of and nergia the electrical worker in the future, all based on the inflation: a system from 1.200 Wp concurs a saving of 300-550 Euro/year if place in the Italy North, while if place in the South Italy, the saving becomes of 350-650 Euro/year. A solar system hard calmly 30 years, therefore if we hold account of expenses, the saving and the recovery of 41% of IRPEF, we will employ in order to damp it approximately 6-12 years (in the South Italy is necessary little time in order to damp the system, approval the advanced solar radiation), already putting on account the future increases of the cost of the electric power. Cost of a photovoltaic system The fotovoltaici systems normally come sold based on the KWh that they produce in conditions of ideal radiation. A system base is that from 1.200 Wp (means that in 1,200 optimal conditions Watt of peak produces) and produces, if installed in the Italy North approximately 1.300/1,500 KWh/year, while in the South 1.600-2.000 Italy KWh/year. A system of the sort coast approximately 6.500 enclosed Euro vat, installation and transport. While a system from 2.000 Wp costs approximately 9.000 Euro vat, enclosed installation and transport. The installation can come to cost 500-1,500 Euro, to second of the difficulties that can be met. To the cost however of the entire system the recovery of the IRPEF of 36% can detrarre, that it means a reduction in price of 36% on the entire expense, beyond to possible financings or contributions for the installation of fotovoltaici systems. These types of solar systems do not need of a particular maintenance, wanting fotovoltaici panels every 2-3 can be cleaned up several years, even if normally the same ones are maintained enough cleaned up thanks to the rain and to the wind. It is instead necessary even to observe, every now and then, the present spies on inverter, that they can signal the eventual breakdowns, or anomalies in the rendering, and eventually to call the confidence electrician, in order to find of the possible causes. Saving Practically everyone of we can decide how much to save in current electrical worker, simply acquiring a more or less powerful system, based on the consumptions that annually we have of current electrical worker: he is sufficient to take a Enel bill and to understand how much KWh we consume every year. In a house where 4 live persons and the consumptions are oculati, therefore the light bulbs are to low consumption, are not present air conditioners, the heating and the stoves are to methane, and they do not let ignited the light bulbs for hours and hours uselessly, normally they come consumes 1.500-2.500 per year to you Kwh. While in it inhabits zione of 4 persons, where not there are the said conditions sop! ra, the annual consumptions are of approximately 3.000-4.000 KWh. The average of the consumptions of a typical Italian family KWh is of 3.000-4.000/year, therefore it can be intuire that the families are very little that adopt measures for the energetic saving.
