Energy-Producing Residential Buildings

While energy self-sufficiency is usually associated with single-family homes, the reality is that today there are already buildings that are not only capable of operating autonomously, but are residential buildings that produce energy, sometimes more than they consume.

With the current pace of life and consumption, it is normal for us to often consider the need for a radical change in our lifestyle and consumption habits. It is also legitimate to ask ourselves if we will truly manage to design and construct homes that are self-sufficient or produce energy.

The dream of many is beginning to become a reality. Little by little, we have increased sustainability in the field of architecture, especially for single-family homes, but we can also begin to implement these strategies in multi-family buildings. In fact, in Nordic countries, Germany, and Switzerland, which are pioneers in energy efficiency, zero-energy buildings have been a reality for almost a decade.

Energy Efficiency for Constructing Energy-Producing Residential Buildings

Firstly, it must be made clear that promoting energy efficiency in residential buildings does not in any way compromise the comfort and quality of life of their occupants by reducing the energy consumed in our daily lives.

Promoting improved energy efficiency in residential buildings is based on optimizing energy production and consumption processes, with energy obtained from renewable sources.

Furthermore, responsible consumption, as well as recycling and waste reduction, are promoted.

All these actions contribute to creating residential buildings that, while maintaining the performance of conventional buildings, consume less energy, use only renewable sources, thus becoming more sustainable buildings, and can even become residential buildings that produce energy themselves.

It is at this point that we can consider how energy efficiency is achieved in residential buildings.

Optimization of Energy Production and Consumption Processes

We can consider four basic ways to reduce energy consumption in construction.

Their ultimate goal: the reduction of CO₂ emissions into the atmosphere and the maximum possible conservation of generated energy.

The design of a building is directly related to its energy use.

Embodied energy is the energy consumed by all processes associated with the production of a building, from the acquisition of natural resources to the delivery of the product, including extraction, manufacturing of materials and equipment, transportation, and administrative functions.

Zero Consumption in Energy-Producing Residential Buildings

As mentioned earlier, a key aspect of achieving energy-producing residential buildings is to seek minimal consumption by the residential buildings we design and construct.

A zero-energy building is a building with a high level of energy efficiency, in which energy consumption is offset by on-site production.

To achieve this, it is best to follow a series of best practices that aim for high energy efficiency in our residential buildings and come as close as possible to zero-energy buildings.

Zero Consumption Strategies

1. Energy Consumption Reduction

Generally, in the home, the most significant consumption areas are heating and hot water generation.

2. Water

Regarding water acquisition and consumption, we must be very aware that it should always come from natural sources.

In energy-producing residential buildings, the lower the consumption, the better.

Therefore, we should opt for natural water supply systems, either through rainwater harvesting with subsequent filtering, or through underground wells if we know of the existence of water in the subsoil of our building’s plot.

In the first case, dependence on rain is a factor to consider, while in the second, we must not forget the possibility that our well could dry up or run out of water if consumption is high or if, for any reason, water stops reaching it.

To prevent either of these situations from occurring, the involvement of the people who will live in the building is vital. We must be conscious and responsible with consumption, using water reuse systems, with which we can, for example, use the water that passes through the sink or shower in the toilet after a simple filtering process.

3. Use of Natural Resources

Utilizing passive design strategies and harnessing natural resources such as sun, air, water, etc., to achieve comfort in homes while reducing the building’s energy consumption are key actions for creating energy-producing residential buildings.

Using eaves, porches, adjustable solar protection elements on windows, insulation on cold facades, etc., are strategies that help us reduce heating and cooling demand and encourage the building itself to produce the necessary energy to cover the few energy demands that occur in the community.

4. Reduce, Reuse, Recycle

Although this section may seem more related to a personal lifestyle, this time we want to convey a different message, aimed primarily at developers, builders, and architects who are considering opting for energy-producing residential buildings.

While it is true that the role played by people who choose to live in energy-producing residential buildings is vital for their proper functioning, considering certain strategies for consumption reduction, energy reuse, and recycling can bring many benefits to the building developer.

Firstly, in addition to contributing to sustainability, we offer energy-producing residential buildings that thus reduce their ecological footprint with small decisions, something quite unusual and increasingly sought after in the current real estate sector.

The result of a well-planned building is more efficient and generates fewer consumption-related expenses, which will economically benefit both the builder/developer and the future client.

We can reduce consumption by designing smaller homes, using reused or recycled materials and products (provided their quality is assured), installing water purification systems or organic compost for garden areas, etc.

Considering equipping the building with spaces that facilitate a sustainable lifestyle for future clients, who will appreciate having bicycle parking, systems for charging electric vehicles, and even interior courtyards that serve both to climatize homes and to create pleasant spaces for families all year round.

In summary, as developers, builders, or architects committed to the environment and our clients, we must always consider the comfort of the future users of our energy-producing residential buildings.

With small actions, we will ensure they can lead a simple and environmentally friendly life.

We only need to get a little involved to contribute to the planet’s sustainability, being consistent with our actions since we can save a lot of energy to facilitate the construction of energy-producing residential buildings.