solar panels They can represent great savings, not only on the electricity bill, of up to 35% on the heating and up to 30% of domestic hot water in a block of buildings. An interesting figure in the medium and long term, once the initial investment and installation costs are recovered. Because in addition to single-family homes, as usual, also communities can be installed. If you have decided to propose it to your neighbors, you must first be familiar with all the advantages of generating electricity from sunlight and the requirements to be able to place them.
If you want to propose the installation, the first thing you should know is that the law allows it. In fact, since 2008 the Technical Building Code forces to the installation of thermal solar panels for the production of domestic hot water in buildings new construction.
But you should keep in mind that for the installation minimal space required, which will depend on the number of panels to be placed in relation to the houses in the block. The most common is that it is located on the roof or in a large common area that get enough hours of sun. In this way, you can supply electricity and domestic hot water to the neighbors without the need to draw excessively from the electrical network, beyond the night, cloudy days or when the accumulated energy in the batteries runs out if installed.
How many neighbors must vote in favor of the installation of solar panels for its approval?
According to the Horizontal Property Law, it is enough that a third of the owners vote in favor and it is attached to the minutes of the neighborhood council so that the installation can be carried out. It is not necessary for the energy produced by the solar panels to reach all homesso if a neighbor is not interested, it is not necessary that they be included in the spill.
In addition, it must be taken into account that Some houses are bigger than others. and in which more people live, so energy consumption is higher. This can also be taken into account so that the distribution of generated energy is not equitable. Thus, at the time of paying the costs of the installation, each neighbor will be able to make an investment in proportion to the contracted power.
On the other hand, it is necessary votes in favor of two thirds of the residents in the case of self-consumption in common areas. It can be an interesting alternative for elevators, stairs, the garage and other common areas where consumption is very high due to the high number of residents.
Advantages of installing solar panels in a building
Photovoltaic installations have several benefits, including some that individual houses do not:
- By installing a technical room in common areas, it is not necessary to occupy useful space in a home.
- The system can be optimized to achieve lower energy consumption.
- The cost of installation and maintenance is centralized and is cheaper for each neighbor.
- Financial compensation can be obtained for pouring the surplus into the electricity network, which is deducted from the electricity bill. It may be distributed among the neighbors according to the initial investment they have made.
- Increase in the market value of buildings, as they are more sustainable and energy efficient.
How much does it cost to install solar panels on a building?
The price always It will depend on the type of installation to be carried out.Therefore, different experts must be consulted to carry out a preliminary study. You must size the plates necessary to cover the consumption of the neighbors in order for them to get significant light savings that allows them to amortize the installation.
In addition, the installation varies depending on the building orientation, the hours of sunshine that it receives or the number of neighbors, among other variables. There is always value in the subsidies and aid from the Next Generation Fund of the European Union for self-consumption in the residential sector
