Solar self-consumption installations, electricity generation from photovoltaic solar panels in the context of the home. These have the ability to convert sunlight through an inverter into direct current electricity, which becomes alternating current and therefore accessible to homes.
Beyond these basic components (panels, inverter and batteries), there are other resources that determine the performance of the installation and cover different functions. Some of the most important are wiring, optimizing devices or anchors. In addition to the mechanics or the manufacturing process solar energyThe effectiveness and overall performance of the installation for self-consumption also depends on an effective planning process and the activation of resources or the integration of accessories that increase its potential.
A well-executed solar installation for self-consumption Service life from 25 to 30 years. However, it is important to maintain some control, and if a 10% or greater decrease in performance is noted, a thorough technical inspection will be carried out and equipment or devices affecting it will be subject to overhaul or repair. need
presence Expert team It becomes important to evaluate the viability of the project and identify opportunities for efficiency and long-term improvement. The most recommended thing is to turn to a company in the reliable segment like EDP Solar and get tailored advice. Only a trained professional can measure and take into account all technical factors, as well as the most suitable technological resources, so that the installation has a long service life and maximum long-term economic savings.
When starting an installation project, you can choose: two models of self-consumption. On the one hand, it is possible to activate. Connection to the electricity gridcan provide some guarantees in case of malfunction. On the other hand, a person can use isolated self-consumption facilities. They can operate without the need for backup, although they can sometimes be used with a generator set.
The most recommended alternative, at least in the early years, is the one with a connection to the electricity grid. One of the reasons for their popularity lies in the fact that isolated options require higher investments, so they are often directed to geographic environments where there is no or poor access to the supply network.
Types of self-consumption photovoltaic installations
Grid-supported installations are configured to respond to a fraction of the electricity consumption, thus partially minimizing the cost of the electricity bill.
Direct self-consumption facilities
In this model, the electricity produced by the self-consumption solar installation is consumed. In addition, if there is any excess, they are discharged to the grid. In the opposite case, that is, the installation produces less energy than necessary, access to the electricity grid is possible.
Direct self-consumption installations provide up to 50% reduction in electricity bills.
Self-consumption with batteries or accumulator systems
In this mode, the energy produced by the solar panels is consumed directly. If surpluses were produced, then they would not go to the power grid, but would be stored in batteries to meet future needs. As a result, the consumption is predominantly generated from solar energy and therefore the savings possibilities are increased to the point where they reach an 80% reduction rate.
In such facilities, the allocation of consumption to the electricity grid, in return, get an economic benefit between € 0.05 and € 0.06 if the installation meets the necessary requirements.
It is also possible to install a hybrid inverter and then buy a battery, but in these cases the price increases significantly.
Isolated self-consumption plants
In these cases, the presence of batteries is essential as they do not have any physical connection to the general distribution power grid. While there are different ways to deal with this type of installation, one of the most cost-effective is solar pumping. It is based on pumping water with solar energy via photovoltaic panels and a converter that uses the accumulated energy for self-consumption.
It is very important to make a good purchasing decision when choosing a battery, and factors such as the maximum depth of discharge, the daily electricity consumption at home and the degree of autonomy expressed in total days should be taken into account.
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