In recent years, self-generation of energy in the home has become a sustainable and cost-effective option in the medium and long term. Thus, thanks to technologies based on solar, wind, or thermal energy, many people now have the opportunity to install systems in their homes so they do not have to rely exclusively on third parties to meet their energy needs.
Specifically, according to the 2024 Report prepared by SotySolar in collaboration with UNEF and Aiko Energy, one in five Spanish homeowners (22%) currently has solar energy at home or is at least seriously considering installing a system of this type. That’s why in this article we’ll discuss this option and other examples of renewable energy that you can easily implement in your home.
What are the benefits of renewable energy for the home?
Implementing renewable energy in the home usually requires a financial investment. But it’s worth it if we approach it with a long-term perspective, since it can provide us with some very attractive benefits. Among them:
- Reduced dependence on electricity from the conventional grid, resulting in cost savings for consumers.
- Reduction of the carbon footprint generated by the home, which helps mitigate harmful gas emissions into the atmosphere and, therefore, their adverse effects on the planet.
- In some cases, consumers can receive compensation for generating excess electricity, since certain companies offer discounts on their bills if the consumer produces more than they actually need.
- Access to tax or financial incentives, because some governments and public agencies offer certain benefits to citizens who choose to install renewable energy systems in their homes. These may take the form of a refund of a portion of the investment or the provision of loans with favorable terms.
- Increased property value, since having one or more renewable energy systems typically increases a property’s value, as it will result in monthly savings on the electricity bill.
Examples of Renewable Energy in the Home
What are the main options available to homeowners today for installing a renewable energy system? Here’s a look at them:
Solar energy (photovoltaic panels)
It is the most popular and widely used option. Due to high electricity prices in recent years, it has experienced a boom in Spain, resulting in a record number of MW of this type connected to the grid, with 5,594 MW in 2023 (28% more than in 2022). However, in the first few months of 2024, a certain slowdown has already been observed, as the installation rate has fallen by 26% (15% in the case of residential installations).
To take advantage of this option, all you have to do is request the installation of solar panels. This can be done through your homeowners’ association if you live in an apartment building, or individually if you live in a single-family home. There’s even the option of reaching an agreement with other neighboring homeowners’ associations to share the same installation.
These solar panels convert sunlight (not heat) into electrical energy, which we can then use in our homes. In addition, they may also be equipped with batteries, so that any energy generated but not immediately consumed can be stored for use at another time of day, such as at night.
Wind Energy
If the building or home is located in an area with favorable wind conditions, a small-scale wind power system can be installed. Typically, this system consists of a series of small wind turbines equipped with low-power generators or turbines (less than 100 kW) that harness the force of air currents and convert it into electrical energy.
This option can result in savings of up to 50% on the total energy bill, but to make it a reality, it must meet a series of requirements. Among these, as mentioned, is an average wind speed of at least 4 m/s; in addition, there must be space available for installing the small wind turbines and, of course, the property must comply with regulations regarding its characteristics—such as, for example, maintaining a minimum distance from the nearest residence.
Geothermal and Aerothermal Energy
These are two examples of renewable energy for the home that are currently gaining the most traction. However, it’s important to note that they aren’t completely self-sufficient, because they, in turn, require some electrical power to function properly and generate more energy.
In both cases, the system involves installing heat pumps that capture heat from the ground or the air and, through various electrical circuits, compress it and distribute it throughout the home. This makes it possible to heat or cool the rooms, depending on the needs at any given time.
These solutions typically have higher installation costs than existing alternatives, but they make up for this drawback with other advantages, such as low maintenance costs, consistent energy production, and a long service life. In fact, they are capable of producing two to four times the amount of thermal or cooling energy they consume to operate.
Biomass
It’s one of the least well-known examples of renewable energy for the home, since it’s not easy to get the most out of it. Essentially, this is because it relies on organic matter—whether of animal or plant origin—as well as materials resulting from its natural or artificial transformation.
These systems use this type of fuel primarily to generate heat and hot water, although they can also produce electricity. As a result, biomass technology is commonly found in stoves ( typically wood-burning or pellet-burning) and various types of boilers, such as low-capacity models for single-family homes, those designed for centralized heating in apartment complexes or residential buildings, or large-scale systems to heat multiple buildings, groups of homes, and facilities.
Among its advantages are the low cost of its fuel (it is cheaper than fossil fuels), its high efficiency, and its low pollution levels. However, they also come with certain drawbacks: from the space they take up (boilers are usually large) to the generation of waste in the form of ash, as well as the need to refuel them frequently and perform regular maintenance to ensure they operate properly.
CULMIA helps you live a sustainable and healthy lifestyle
Which of these 5 examples of renewable energy appeals to you the most for use in your home? Any of them can help you enjoy a more sustainable lifestyle, just like the tips we’ve included in our guide on “Healthy Living and Sustainable Construction.” Download it for free here and discover everything you can do to live in harmony with the environment!
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