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Photovoltaics, costs and benefits. Preliminary evaluations to understand ifagreesinstall a solar system. Sizing, yield, on-site trading, deductions and other factors to consider. How much does a photovoltaic system cost and how much will the cost be recovered.
Specialized firms, at the time of an initial estimate, can provide you with the list ofcosts and benefitsobtained from the installation of a photovoltaic system. In particular, they can report the installation, purchase and maintenance costs in the 5 or 10 years following the signing of the sales contract. While waiting to evaluate custom quotes, here are some things to consider when evaluatingcosts and benefitsrelated to the installation of a photovoltaic system.
Photovoltaics, costs and benefits
To understand ifit is advisable to install a photovoltaic systemit is necessary to carefully evaluate the costs and benefits of the case.
There are several determining factors that affect both costs and benefits:
- installed power
A system is worthwhile at least for domestic users. - Yield
It is worthwhile to focus on photovoltaic panels capable of guaranteeing a yield of 90% for the first 10 years and a yield of no less than 80% over 25 years. - Return time
Based on the installed power, you can evaluate how quickly you can recover the investment. Estimated payback times between 6 and 8 years, even if a well-designed and well-positioned system pays for itself within 4 years. - Incentives
There is no shortage of tax deductions for the installation of photovoltaics. - Network transfer
If thephotovoltaic system is well sized,agreeseven more to enter the energy surplus with the exchange on the spot.
The installed power guarantees an immediate economic return because it will allow you to immediately cut your electricity bill. The yield guarantees a long-term economic return.
Thanks to on-site exchange, thephotovoltaicit becomes even more convenient because you have the option toto cutimmediately the electricity expenditure and have an economic return by injecting the energy surplus into the grid. This is only true if your system is well sized.
Speaking ofcoststo consider, you should get a large number of estimates and prefer those who can provide you with good performance guarantees (at least 90% for 10 years and 80% for 25 years).
In the most favorable cases we speak of costsvery accessible: with an investment of 6,600 euros you could return within 6 years and record - thanks to the exchange on the spot - a net gain of over 8,000 euros spread over 20 years.
Thepriceof each kWp installed, for a turnkey system, is 2,200 euros + 10% VAT. How many kWh to install? The evaluation must be made based on your consumption. A family that consumes 4,000 kWh of energy per year should install a 3.5 kWp system with an investment of around 8,400 euros. In this way it would have an energy surplus to be fed into the grid through on-site exchange. These are very indicative data, we remind you that the sizing must be done not only on the basis of the recorded consumption but also on the exposure of the system.
Photovoltaics, is it still worth it?
Italy is a countrygeographicallyfavored for the production of clean energy from photovoltaics. Buildings and houses exposed in a sunny position are privileged.
Until 31 December 2017, whoever wantsinstall a photovoltaic systemcan rely onfiscal detractionby 50%, this facility for photovoltaics greatly affects the assessment ofcosts/ benefits. The incentives increase if the photovoltaic panels are of typeintegrated.
To becheap, aphotovoltaic systemshould be able to provide for the energy sustenance of the house.
At the time of the quote,agreesevaluate aphotovoltaic systemfor domestic use, or a system capable of satisfying at least the energy needs of the family.
If not, don'tagreesa photovoltaic system but you should evaluate thesolar thermal: solar panels are less expensive and give the opportunity to cut the costs of producing domestic hot water.
With aphotovoltaic system for domestic usersyou have the opportunity tosaveimmediately and, in a concrete way, on the electricity bill. In these circumstances it is true that the solar system pays for itself. Thephotovoltaic is worthwhileeven more if you manage to install enough power to meet the needs of your home and produce an energy surplus to be fed into the national grid with on-site exchange.
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