The storage systems, through the batteries, have the task of accumulating the exceeding electricity compared to the immediate needs of self-consumption, and then return it to the user when the solar plant is inactive, such as in times of poor sunlight or at night. In this way it is possible to maximize the self-consumption of energy produced by the photovoltaic system, leaving the power grid as a last resort spare.
Therefore, accumulating the energy produced by our photovoltaic system, allows us to maximize the benefits coming from self-consumption:
The only way of self-consuming energy produced from renewable sources and from our PV system is to accumulate and store the produced energy that you cannot consume during the day because you are not in your house, in order to use it when it is needed without consuming the power supply that comes from the provider and that has a greater cost in comparison with the sum paid by the premium rate of self-consuming.
It is sufficient to think that a system of up to 20 kW has a premium rate of 0.16 EUR for self-consumed energy, while the energy sold to the grid has a cost of 0.21 €. It is easy to understand how the gain is in the self-consumed of all the energy produced, which is free.
The user who installs a photovoltaic plant with the idea of becoming a real producer of electricity for its energy needs, becomes completely self-sufficient and cannot avoid to evaluate the solution to accumulate and store the surplus of energy produced for those moments in which it is impossible to produce energy such as at night or when the production is low or during the days of lower solar radiation.
There are numerous solutions on the market to store and save self-produced and not self-consumed energy thanks to storage systems for late self-consuming. They are the accumulators for photovoltaic systems that optimize not only the production of power supply from renewable sources, but primarily aimed at optimizing consumption of energy without leaving any kW unused.
The system of storage batteries allows a significant economic return because even at times when it is not possible to produce electricity from renewable sources, you still have a reserve of energy to avoid using the provider’s energy and paying the electricity bill.
It is important to recall that the self-produced energy is free of charge and it is not included in the bill. The amount that you must pay for the electricity bill is the energy consumed during the hours when it is not produced by the photovoltaic system. With the battery energy storage system of self-produced energy, you will no longer need to turn on our electricity network appliances because you are a producer of energy from renewable sources and completely (or almost) independent.
On the market you can find several storage systems by batteries (usually recyclable batteries) of self-produced energy that are ideal for all types of home installation which allows to supply electricity by reducing the withdrawal of energy from the responsible electric grid operator.
In general, the battery energy storage system is self-consumed with an intelligent mechanism that allows to identify if it is better to store the energy in batteries or if it is convenient to move it to the section for self-consumption or put it into the grid in order to receive the incentive rate. Furthermore, the accumulation system, usually lithium, allows to stabilize the variability of the production of electricity from renewable sources.
The battery storage system works without interruption even in the event of electrical power outage, so it can continue to record and store the production of energy from renewable sources. This type of storage system is equipped with a battery and an electronic control unit which, through the use of a software, manages the energy produced, and it can pick the energy up for our dwelling if needed by the network. Furthermore, the storage system manages the battery power to optimize its duration.
The storage system has been designed and engineered to make independent a single home.
It is very important to select our own photovoltaic system to optimize not only the production of electric energy that would never be dispersed in the grid, but above all to reduce the electrical consumption, exploiting only the self-produced and clean energy from renewable sources and above all free of charge.
It is easy to understand how important could be to make the most of the energy that can be produced from a single home photovoltaic system, as this means that the owner of the PV system becomes an electric energy producer and, above all, completely independent from the provider. Moreover, this mechanism can reduce the environmental impact by restricting the entries in grid congestion and fixing the congestion of the power grid.
Studies on the consumption of energy produced by a photovoltaic plant have shown that even if a family is at home all day, it cannot consume more than 30-40%. The exceeding electricity must be sod to the grid if you are not equipped with an energy storage battery.
We can assure that the purchase of an energy storage battery has additional advantages and benefits not only for the energy consumption of our house, but also in the consumption and practicality of the dwelling itself: