In a world that places increasing emphasis on sustainability and reducing carbon footprint, solar energy is emerging as an effective and promising solution. photovoltaic panelsSolar cells, which can convert sunlight into electricity, have become pioneers in the transition to cleaner energy sources and also provide huge savings on increasingly expensive electricity bills.
The power of the sun: renewable energy in action
Photovoltaic panels, also known as solar panels, convert sunlight into electricity using the photovoltaic effect. These plates, which consist largely of solar cells made of silicon, absorb sunlight and directly produce electric current, providing a clean and renewable energy source.
What should you know before you decide?
Installation of photovoltaic panels requires a certain financial investment. Therefore, we must consider various factors to determine whether we can amortize this investment. in a reasonable time. We must keep in mind that an installation of approximately 4KW (the amount a single-family home usually consumes) is equivalent to 8 500W panels. It will vary between €6,000 and €10,000 It depends on whether we choose one or not. normal or hybrid inverter, among other benefits.
Roof direction
Although it may seem obvious, the most important thing to consider before performing a photovoltaic installation is direction of the roof of the house. Although it is true that any orientation receives sunlight at a certain time of the day, we must take this into account. A north-facing roof will receive less light during the day. and will need to be connected to the electrical grid to meet its consumption in a large part of the house and therefore, the payback of the installation will be much slower.
Request multiple quotes
It is also important to at least ask: three different budgets. Today there are hundreds of companies dedicated to the installation of photovoltaic panels and they all offer the same thing: installation of the panels, managing all the documentation and maintenance during the first year to get help and subsidies, but the important thing is to ask What brand of panels will they install? Since it is possible that we do not want or cannot fill the entire roof with sheets in the first investment, it is important for subsequent investments to know how much each of them is worth and their quality.
Investor
The inverter is the device that collects the electricity produced by the panels and integrates it into the home network and dumps what we do not need into the electrical network. There are two types of investorsnormal ones and hybrids. The first does not store excess energy, but only transfers it to the electrical grid. hybrids They behave the same as normal peoplebut also allow storage on batteries to use all our excess at night or on cloudy days.
Is it worth investing in batteries?
The difference between a battery-based installation and a battery-free installation can range from €2,000 to €3,000. The advantage is obvious: a battery stores all the energy we don’t need to use when there is no sun, but the initial cost of installation is higher, battery life and market launch virtual batteries It causes more and more people to choose traditional installation without batteries, but they hybrid inverter in case they decide to install batteries at some point.
virtual batteries
When a house is converted to self-consumption, You should pass this on to the marketer (normally this step is done by the installer) and the marketer accepts the change, The customer must request the electricity company to switch to a self-consumption plan.
The difference between a regular plan and a self-consumption plan is this: In self-consumption the company buys the excess we produce with our installation (always at a lower price than what the customer received from the company) and this is what allows the bill to be reduced. At the end of the month, the KW we need is collected from the electricity grid and What the electricity grid takes from us is revealed.
Since it is clear that we will produce more surplus in the summer than in the autumn and winter months, today almost all Marketers include virtual battery rental option in self-consumption plans. These batteries are stored in euro To use the excess we create with our installation with less light in those months and thus balance the bill cost.
Aid, deductions and subsidies
Finally, when calculating the time required to pay for the installation, we must take into account all available aid, deductibles and subsidies related to renewable energies.
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Aid: In the case of housing, European aid from funds Next generation They will be able to receive support of up to 600 Euros per kilowatt of installed peak power (kWp) from panels and up to 490 Euros per kWp from batteries, if any.
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Subsidies: Residents switching to self-consumption in many municipalities, Up to 50% on IBI rate For several years.
Deductions: Anyone switching to self-consumption a portion of the installation may be deducted from income Provided that this installation includes Letter change in the house’s energy certificate. It is very important to keep in mind that it is necessary to present a certificate. energy before installation and another certificate after installation To be able to show letter skipping. Taking all these aspects into account, a traditional 4KW installation can be amortized in 4 to 5 years.
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