OFF-GRID SOLAR SYSTEM
A SOLAR SYSTEM OUT OF THE NETWORK are recommended for places far from the city or areas of difficult access of the electrical network or nonexistence of it.
What is a solar system outside the network?
A photovoltaic system outside the network is a completely independent system independent of the network, which produces energy only for the users to whom it is directly connected.
In particular contexts, it can be a really advantageous solution, as long as it is integrated with an accumulator system capable of storing the extra energy produced during the day.
Let’s see how to make the most of this type of system to self-produce energy and save on energy costs.
Autonomous system of solar panels: independent network system outside the network.
The dream of many and also the perfect vision of the future: provide your home with total independence and energy. Unfortunately we’re still not that far … right? Yes, but it will cost you more money .
Differences between photovoltaic systems inside and outside the network.
The big difference between a system connected to the network and an autonomous system is that, with an autonomous system, the generated energy is stored locally instead of being sent to the network.
You need batteries for this storage. Heavy batteries. These batteries are sometimes called solar batteries .
This heavy batteries or accumulators store the solar energy supplied during the day in and releasing it when needed.
Whether we are talking about photovoltaic systems in the network or systems outside the network, the operation is the same.
The panels capture the energy of the sun and, through an inverter , transform it into electricity ready to be used in the domestic network to operate lights and appliances.
What changes is the possibility or not of entering electricity produced but not immediately used in the network, to benefit from an economic recovery.
- The most common photovoltaic systems are those connected to the network . These are systems that are always connected to the network, with which they actively exchange energy. To regulate the introduction of energy in the network, the user signs anexchangecontract with GSE that allows him to obtain, more than a refund, compensation for the cost per kWh of the electricity that is removed.
- The photovoltaic system without connection to the network, also known as island or independent system, is designed to be completely autonomous, that is, not to feed kW of energy to the network, but to use it completely for self-consumption.
In some cases, for example, in mountainous areas or in remote contexts where it is too expensive to obtain connections to the national grid, the off-grid photovoltaic system proves to be the only possible solution to satisfy the demand for electricity.
But these are unique and exceptional situations, while it is very complex to separate from the national network, also for reasons of opportunity.
In fact, of course, you must ensure that you can always achieve 100% self-consumption with your system, to avoid running out of electricity. A snowy day , for example, could be a problem.
Normally, however, it is not recommended to disconnect completely from the network, when in reality it is not necessary , as it could cause several problems. Keeping your home connected to the network gives you the security of being able to extract the necessary electricity even in case of snow!
If you want to achieve energy independence, you do not need an off-network system! Even with a classic photovoltaic system connected to the grid, you can take full advantage of the production potential of the panels and reach very high levels of autonomy, up to 99%.
How to achieve energy autonomy with photovoltaic storage?
During the day, photovoltaic modules can produce much more energy than domestic loads require.
Where does all this unused energy go?
- If you have a photovoltaic system outside the network and, therefore, is not connected to the network, it is lost in the environment and is wasted.
- With a system in the network, you can always put it on the network, even if the economic performance you get with the exchange at the moment is a bit low .
The best solution to increase your participation in energy independence and 100% of the performance of the operation panel is to install an energy storage.
In this way, it stores the surplus of energy in the batteries to use it when necessary, when the system stops or produces little.
Independently of the technology (in the network or outside the network), the photovoltaic energy is convenient insofar as it can make the most of self-consumption to reduce withdrawals and have lower bills.
By opting for state-of-the-art photovoltaic accumulators, you can aspire to achieve very high percentages of energy autonomy, well above 90% .
With the security of exploiting a source of renewable energy to power the electrical system of your home in a safe, continuous and with full respect of the environment.
Attention! Whoever has a photovoltaic system outside the network and wants to install storage batteries, should still opt for systems certified by CEI 0-21 that require, by law, connection to the network.
Do not fall into the trap of those who want to sell UPS without pretending that they are accumulation systems: it is an illegal maneuver, which runs the risk of making you spend money unnecessarily, which forces you to have to invest again for the accumulators according.
What are the advantages of an autonomous system of solar panels?
In any case, autonomous solar panel systems will become the norm in the future , but for now, the great advantage of a fully autonomous system is that there is always energy available . This is especially important in areas where this is not as obvious as:
- Remote homes with a high connection cost.
- Housing located in an area with little electricity network.
What are the disadvantages of an autonomous system of solar panels?
The biggest disadvantage of an autonomous system can already be guessed: if your solar panel, your inverter or your battery malfunctions, you will not have energy .
With a system connected to the network , then you change 100% to your external electricity supplier.
It is also important to know if the autonomous solar panel system can generate enough energy for its energy consumption .
Not only the global consumption is important (annual consumption) but also its maximum consumption .
An example is a rainy weekend in December where you have planned a party: washing machines and dishwashers at full speed and also lots of light. Is your battery up to that?
Recommended: a sealed meter cabinet.
If you already opt for an autonomous system, it is better that you still have a meter cabinet installed , but leave it sealed.
This is considered a field service and you will not have to deal with all types of taxes that are attached to the electricity supply.
It turns out that after the solar system is not enough, you can still a connection to take without additional cost for its installation.