Generally today any self-consumption photovoltaic installation in our country is profitable. For this reason, with the incessant increase in the price of electricity, every time there is a greater number of households opting for the installation of solar panels for self-consumption.
He savings on the installation of photovoltaic solar panels is significant and it can reach 40-60% of the annual cost of electricity of a house. Although this amount will vary depending on various factors, such as the geographical location of the home and the photovoltaic panels, their quality and maintenance, etc. He savings on the electricity bill what will we get along with the many aids and bonuses that currently exist for the installation of solar panels for self-consumption, will allow us recover the total investment made in 4 years thanks to Next Generation grants.
let\’s see next What are the factors that directly affect the amount of money? which we can save by installing solar panels.
Factors affecting the savings of installing solar panels
As we just discussed, SAVING What will we have to install solar panels in our house? it will depend on many factorsof which the following stand out above all:
The quality of the technology used
There is one on the market wide variety of solar panels and photovoltaic inverters, with different characteristics and efficiency levels, which allow different levels of savings to be achieved. For this reason, when we opt for a certain model or another, we must consider not only price, but also aspects such as quality, efficiency and features specific to each team.
While using inferior equipment reduces payback time, it also increases the risk of it failing much sooner than expected. In addition, their performance is usually lower and they tend to degrade faster. All of this translates into less savings at the end of the plant\’s useful life.
Plan consumption based on solar energy production
It\’s important organize consumption according to the production curve of our photovoltaic system. In this way, the savings will be higher if our consumption is mostly concentrated during hours when the production of solar panels is also higher. This will depend on the possibility we have to schedule our consumption or not.
The period of the highest photovoltaic generation is from 9:00 to 17:00, so it must be taken into account that it is in those hours when the most consumption should be consumed. The use of consumption programmers can help us in this regard, allowing the limitation of the operation of thermoelectrics, pumps and other equipment during the respective period.
Contracted electricity tariff
To achieve even greater savings, it is important that the part of the energy that cannot be supplied with photovoltaics is as economical as possible. That\’s why we can employ a time-sensitive tariff which allows paying less during the night, because the consumption during the day will be covered almost entirely by the photovoltaic installation. In this way, in the part of the day when we consume less electricity, we will have to contract a lower type of power.
In addition, the hours of the day when electricity is most expensive largely coincide with the hours when a photovoltaic installation produces electricity.
Features of the house
Depending on where is our house We will have more or less peak solar hours, although in our country the differences between some territories and others are not significant, so it is always profitable to install solar panels, regardless of the region in which we are. However, it must Consider the following housing factors:
- Space available for installationbecause this determines the number of solar panels we can place.
- Orientationit being generally advisable to orient the solar panels to the South.
preventive maintenance
One of the characteristics of self-consumption photovoltaic installations is that virtually maintenance free; And when you have to do it, it\’s very simple. But it\’s important to know this proper maintenance will make our facility more profitable. For example, if we clean the panels regularly, they will increase energy production by up to 10%.
Dimensioning of the photovoltaic installation
To save as much as necessary correctly calculate the number of solar panels we need for the house. One must dimensioning the size of the unit based on several factors, such as the number of people living in the house or their consumption habits.
In addition, it should be taken into account that during the summer there is about twice as much photovoltaic production as in the winter. Therefore, it is important to do the calculations so that we do not fall short for winter needs, nor oversize the installation for summer.
Type of photovoltaic installation: Isolated or connected to the grid
The savings will also depend on the type of photovoltaic installation we have, connected to the electricity grid or an isolated installation.
- Economies with isolated installation or without connection to the electrical network. These types of installations are ideal for places where there is no possible grid connection, as it allows them to be completely autonomous, as they do not need to be connected to the electricity grid. For this we need solar batteries that accumulate the energy produced during the day and not consumed, so that we have it when we need it. This makes the initial investment increase substantially, mainly due to the solar cells, one of the most expensive components of the installation.
- Savings on the installation connected to the electrical network. sonny Solar panel installations for self-consumption that are still connected to the electricity grid, so that they can be used when the solar panels do not produce enough or when they do not produce direct electricity (at night or on very cloudy days). The additional savings we can get from our self-consumption facility is based on a PV self-consumption surplus compensation system that allows us to maximize our savings with surplus solar energy.
Other factors involved in saving: aid and tax benefits
The savings provided by the solar panels can also be increased through other contributions such as subsidies or tax advantages.
Spain offers a wide range of Aid, subsidies and bonuses to encourage the installation of solar panels throughout the territory. Thanks to these aids we can get a bonus of up to 50% of the initial investment made in the photovoltaic installation.
Aid and subsidies for the installation of solar panels in Spain are from various types: Reduction of property tax (IBI) and construction, installation and works tax (ICIO); income tax deductions (IRPF); and state, regional or municipal subsidies.
The team of professionals from P.O.W will advise you for free so that you can get maximum savings and maximum profitability of your photovoltaic installation, effective sizing systems according to the needs of your home. In addition, in P.O.W they can I advise you personal about what are the subsidies and bonuses to which you are entitled depending on the location of the house where you want to install the solar panels.
