The sun is an abundant energy source that can provide electricity to the entire globe. Solar panels are the means to convert this energy into what we need to take advantage of its rays.
The use of solar panels is still in its start-up phase. A simple, effective, and sustainable design to take advantage of solar energy.
These panels can help us avoid using fossil or wasteful energies, allowing us to get domestic use to be self-sustaining.
But, how much does it cost to install solar panels at home?
The importance of installing solar panels
As a result of the crisis due to the pandemic, and the rise in electricity prices worldwide, paying for electricity will have a high cost.
We must think about available options to avoid jeopardizing life quality, losing money, and as a plus, promoting the use of green energy that is less harmful and come directly from the sun.
Solar panels are an option that can save us between 50% and 70% of the electricity cost at home, and in the long term, it will guarantee savings and a wild card for any emergency.
If you bet on photovoltaic solar energy panels, you are betting on savings. Its cost is not as much as it may seem, and you will notice the savings in the electricity bill from the first month.
How does solar energy work?
Solar energy is renewable energy obtained from the sun’s electromagnetic radiation, which reaches the earth as light, heat, or ultraviolet rays. It is clean and renewable energy because we can get it from a natural source.
Today, it is one of the most promising energy sources, together with wind energy, and is gradually replacing fossil fuel power plants and nuclear energy.
The use of solar panels at homes is becoming more common every day.
The sun is in charge for heating the earth thanks to radiation that travels through space through particles called photons. These particles function as vehicles for transporting solar energy.
The amount of solar energy that the earth receives annually is 4,500 times greater than the energy it consumes, which is why it is considered an inexhaustible source.
Ways to get solar energy
We can capture solar energy through photoelectric cells that make up photovoltaic panels; these transform solar energy into thermal energy (through temperature) or photovoltaic solar energy (through light).
Bioclimatic and sustainable architecture techniques can help to harness this energy.
Solar energy is one of the easiest to produce, especially photovoltaic solar energy, making it widely used in climatic zones with more hours of sunshine.
Benefits of using solar energy panels
Renewable energies, in particular, solar energy has multiple benefits:
- Solar energy is not polluting, unlike other kinds of energy.
- It is available all over the planet, so it is easy to get.
- It contributes to sustainable development. Solar energy is, without a doubt, one of the energies that promote the sustainable development of the planet.
- Of all renewable energies, this has the lowest acoustic and visual impact.
Types of solar energy
There are several types, and these are divided depending on the processing of each one:
This kind of energy consists of obtaining electricity directly from solar radiation. This requires the installation of photovoltaic solar panels, which have silicon cells that transform sunlight and heat into electricity.
- Solar thermal energy
This type of energy produces heat, used at the domestic and industrial levels.
In the case of domestic energy, we would be talking about an installation consisting of solar collectors installed on the roof or in a sunny part of the building. These capture solar radiation and convert it into heat, which is passed through a circuit of metal tubes and generates enough energy for the use in a home: hot water and heating.
How much does it cost to install solar panels at home?
The price depends on many elements, such as the type of panel or tile used, or the size of the solar panel installation.
As for the type of solar panel, there are mainly self-consumption panels or storage panels in the market.
When using the self-consumption ones, all the energy produced is spent in the house, surplus energy injected into the grid or system.
The price is approximately $3,000, maybe more, but this amount varies depending on the number of panels to be installed, the battery for the accumulation of energy, or the difficulty of the installation.
There is a great variety of sizes and powers of solar panels. We can find powers from 10W to 195W. We must choose the one that fits our needs since it is not the same panels needed for a single-family house, like those necessary for an entire building.
The price is also influenced by the structure required for installation, especially if the panels will be installed in a newly constructed building or in an old house.
But you should know that the price rises up to 30% if you select self-consumption solar panels with storage. In this case, the surplus energy is charged in a battery and supplied when needed. The kilowatt is more expensive per kilowatt, but independence from the grid is 98%.
A single-family house with average energy consumption will need to install between 8 and 12 solar panels.
The price of solar panels is now four times lower than it was 15 years ago, while the power has quadrupled. Little by little, we will see more and more panels installed on common homes and residences.
Solar panels installation
Photovoltaic panels can be installed on blocks of apartments and single-family houses. The main requirements for their installation are that the roof must be well oriented, have an optimal slope, be accessible and not include external elements that generate shadows.
There is no formula to know which one to choose, but it is a fact that photovoltaic installations do not have the problem of possible failures due to overheating of the heat transfer fluid.
Their profitability is somewhat higher than thermal solar panels and more stable throughout the year. In addition, photovoltaic solar panels produce electricity that can be used in any household appliance.