Positive energy buildings: Terreal solutions

What is a positive energy building?

A positive energy building has a relatively simple definition. Also known as PEBs, these are structures with a positive energy balance. This means that they produce more energy than they consume. To do this, the buildings must produce energy, but also have a low energy consumption. 

To attain these results, several criteria must be considered. First, the architectural design must incorporate optimal thermal insulation. The use of false ceilings also helps with this. Other criteria, such as the heating system installed or the type of electrical equipment (high- or low-energy lights, how old household appliances are etc.) also influence the energy balance. 

Finally, equipping the building efficiently with solar panels enables it to produce energy.

Energy efficiency levers for buildings

Improving energy performance while reducing resource use is the challenge for positive energy buildings. A whole range of levers can be implemented to achieve these aims and these are some of the most important.

Quantifying consumption 

In order to make headway in the field of energy performance, it is essential to be able to take increasingly precise measurements relating to a particular building's consumption. This requires the set-up of methods and equipment capable of providing the most accurate information possible, as well as the inclusion of new indicators  that can help to determine whether or not performance targets have been met. 

We are actively researching practical solutions in this regard, which we also ensure are certified by external and independent bodies. In addition, we maintain relationships with various thermal consultancy firms for the design of new solutions. 

Using more efficient materials 

It goes without saying that construction materials play a decisive role in the energy performance of buildings. All materials are different and therefore have different insulation capabilities. The development of increasingly efficient materials is therefore essential in this type of research. 

Terreal structural bricks can achieve thermal resistance ratings of more than 1 against an average of R<0.29 for standard masonry. Our Calibric One brick, for example, has an R value of 1. Our Calibric Max brick offers the highest performance in terms of thermal resistance with an R value of 1.5. These thermal performances are of course advantageous in meeting the needs of positive energy buildings. We also offer economical solutions to manage thermal bridges, such as our insulating brick edge tiles.  

We can also work on roof insulation with our range of sarking products which provide insulation with no thermal bridges and protect the roof frame from fluctuations in temperature.

Renewable energy

Positive energy buildings must be equipped with a renewable energy source. This is essential for improving energy performance. In particular, we are working on innovative solutions in the field of photovoltaics. Our photovoltaic offer meets the standards that have been in force since 2020, especially in terms of energy production performance by PEBs.