perform a installing solar panels in a single-family house It is an interesting investment that will allow you to save a significant amount of money on your electricity bill. It should also be noted that photovoltaic installations in single-family homes are simple and quick to implement because the roof of the house is freely available for the placement of panels, without the need to request authorizations from a community of neighbors.
Despite the fact that the amount of money that can be saved of the photovoltaic installation in this type of housing it will depend on factors such as:
- Installed power. A certain number of plates must be installed depending on the consumption of the home. This will be the key to determining the savings on your electricity bill.
- The type of heating. Homes that have electric water heaters will achieve greater savings on their electricity bill.
- Electricity consumption habits. Homes that consume most of their electricity during the day will have a higher percentage of self-consumption energy and will therefore pay off the PV installation sooner.
As I have commented, installing the panels in a single-family home is much less difficult than in a flat or semi-detached house, since the entire roof extension of the house can also be used no community permits are required. It is only necessary to have a surface without shadows. Depending on whether or not the home has a network connection, we will distinguish the following types of installations:
- Photovoltaic installations with connection to the network. They use the energy that is produced during the day and at night or on days without sunlight they use the electricity grid. Typically, single-family homes can also take advantage of simplified compensation to get a discount on their electricity bill for unused energy.
- Isolated photovoltaic installations in a single-family house. They are completely autonomous from the electrical grid and therefore must have solar batteries that accumulate and can use the energy generated by the solar panels at times when it is not possible to produce.
It will always be important, before deciding on one type of installation or another, that Let\’s consult a professional in the sector to guide and advise us During the whole process. He will offer us different alternatives according to our needs and will handle the project from start to finish.
The cost of a photovoltaic installation in a single-family house
The prices of installing solar panels on a single-family home are determined by various factors, including the quality COMPONENTS photovoltaics and the installation process.
In addition, it will always be necessary to consult if we have some kind of aid or subsidy in our autonomous community, as they can cover a considerable percentage of the installation price.
He the price of a photovoltaic installation In a single-family home, it is fundamentally determined by the price of the solar panels and in the photovoltaic inverter, expenses that represent approximately 75% of the total cost of the installation. The price difference between different models of solar panels is normally set by the peak power of a panel (Wp), which is the amount of energy it is capable of generating; of the technology used (monocrystalline, polycrystalline and amorphous panels), crystalline photovoltaic panels being the most expensive but the ones with the best performance and efficiency; and finally according to the manufacturer\’s brand.
However, if the initial investment proves to be a problem, there are models of FUNDING which bring the possibility of having a self-consumption solar installation in your home without initial cost and to your needs.
The number of solar panels and the mode of self-consumption that a single-family home needs
He the number of plates you will need to install a single family home It will depend on the annual consumption of the people living in that house.. Typically, in Spain, single-family homes have an average consumption of between 5,000 and 8,000 kWh per year. Given that there are all the necessary conditions for the realization of the project, an average photovoltaic installation would require approximately six to eight solar panels. It is fundamental adequately size the photovoltaic installation to obtain maximum profitability and minimize the amortization period.
However, when we determine the size of a self-consumption installation we must consider the following factors:
- Orientation and tilt of solar panels. They must be correctly oriented to the south and with an angle of inclination that optimizes the photovoltaic production depending on where they are located.
- The geographical location of the house. The number of solar hours that a certain area receives influences the energy production of the solar installation.
- roof surface. It is necessary to have enough space available to make the installation because usually each solar panel is about two square meters in size.
As for the self-consumption method to benefit from, the type of self-consumption which is usually recommended for single-family homes is simplified surplus compensation mechanism. This method allows self-consumption systems to obtain a discount on the electricity bill for kilowatts produced and not consumed. In this case, the price that will be received for the surplus energy will depend on whether the user is covered by the regulated market established by the government or by the free market agreed with the supplier.
Depreciation of solar panels
The average and usual payback time of solar panels installed in a place to live single family varies from 6 to 9 years. The most important factors influencing the calculation of the depreciation period are the following:
- The percentage of self-consumption. The more energy the solar panels consume, the shorter the payback period.
- Installation features. The geographical location of the home and the characteristics of the installation directly influence the time required to recover the investment.
- Subsidies for self-consumption. Various subsidies for solar panels can cover up to 50% of the investment, which means that the payback period is halved.
However, the price of a photovoltaic installation in a single-family home usually requires a higher initial investment, but pays for itself two to three years earlier than in other types of housing. The higher the installed power, the faster the payback period.
