Domestic batteries: should you invest in this equipment?

Domestic batteries: should you invest in this equipment?

The home battery is an accessory for storing excess electricity produced by solar panels. It is then used when they do not produce enough. This type of equipment is therefore directly linked to sustainable development and can be installed in a home. We explain how it works in this article.

The domestic battery, what is it?

The home battery is a system that offers the possibility of storing solar energy that has been produced by solar panels. In general, it is reused when they are unable to produce electricity, such as in the event of bad weather, at night or during peak consumption. In concrete terms, energy can be stored during off-peak hours, when it is least expensive. Note that the price of a solar battery is relatively high, due to its recent character. Everything will also depend on its storage capacity. Currently, the cost of this kind of equipment varies between 3 and 000 euros. In addition, the owners of a dwelling more than 10 years old will be able to benefit from the VAT reduced to 000%. But then, how does a home battery work?

How the home battery works

The domestic battery is included in a more complete system, consisting of solar panels, a wattmeter, an emergency stop device and a battery with inverter. It is the latter which has the role of transforming the direct current present in the electrical network or that of the solar panels into alternating current. Its ends are connected to the electrical box, as well as to the solar panels and the battery. The electricity stored in the battery is usually used to support a household, although some also resell the unused surplus. Equipment of this type has an average storage capacity of 7 kWh. Knowing that a household consumes 9,6 kWh per day, a battery can easily provide a full day of electricity. Nevertheless, does a solar battery allow total independence?

Independence and domestic battery, is it compatible?

You should know that depending on the period, it remains complex to have total independence with a domestic battery. Thus, it is not yet possible to do without the electricity network between October and March, when the days are short and the weather is not always good. The ideal is therefore to combine this equipment with solar panels. Depending on your installation, you could become approximately 75% independent of the electricity grid. A simple photovoltaic installation guarantees independence of an average of 30%. The association of these two systems therefore seems interesting.

Domestic battery, what advantages and disadvantages?

Investing in a home battery has various advantages. First of all, the production surplus can be reused later and is therefore not lost in the network. It is also a good way to increase its immediate consumption. Thus, people who have installed solar panels since 2021 will benefit from a rate based on their actual consumption. The higher the self-consumption, the more profitable the installation becomes. It should also be kept in mind that the solar battery can also be used as a backup generator. On the side of the disadvantages, we find the still high price of the batteries. Moreover, it is still necessary to take energy from the electricity network, especially in winter, when the hours of sunshine are reduced.

And in the event of a power outage?

Of course, the home battery will come in handy in the event of a power outage. Thus, you can easily use the energy that is stored in your installation for heating such as lighting or powering certain devices. A positive point for individuals, but also for professionals who cannot afford to stay several hours or more without electricity. The advantage remains that the domestic battery is both ecological and silent, compared to the electric generator which runs most of the time on gasoline or fuel oil.

Home battery without solar panels, is it possible?

Today it is possible to use a home battery without solar panels. If the purpose of this investment is to store energy so that it can be reused later, be aware that the savings made will not be substantial. The remaining reason is that the difference between the tariff for peak hours and off-peak hours is not great enough. On the other hand, if your goal is simply to have an off-grid power source in the event of a power outage, then buying a solar battery alone may become more attractive. Moreover, it should be kept in mind that this kind of tool is a means of embarking on sustainable development.

Domestic batteries and solar panels, these tools at the service of sustainable development

Combining domestic batteries and solar panels is now a good way to reduce energy costs and work towards sustainable development. The latter is considered as a mode of development whose objective is to meet both the needs of present generations and those of future generations, without their future being compromised. However, the energy produced by a domestic battery and a solar panel being considered renewable, it is therefore a good way to get involved in it.

The possibility of reselling its energy surplus

At the same time, it remains possible to resell the surplus electricity produced and which has not been consumed. In addition to offering clean energy, you will be able to obtain additional income. To do so, it is necessary to approach the competent authorities or to offer directly to consumers who may be interested. For the latter, it is an ideal opportunity to take advantage of electricity produced locally and which, in addition to that, is renewable.

Renewable and local energy

Combine solar battery and photovoltaic panels uses the sun's energy to produce electricity. A good compromise since it has an estimated lifespan of 5 billion years. Considered inexhaustible, this energy is an opportunity to preserve other resources that are not renewable and can be polluting. Finally, you should also know that solar panels are recyclable, that they do not create noise pollution and do not release toxic substances into the atmosphere.

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