Net Zero Building Life Cycle

To understand the life cycle in Net Zero Buildings, you must know the difference between “operational carbon” And the “embedded carbon”. These two concepts are key in evaluating the carbon footprint of a building or construction project, but they refer to different aspects:

Operational Carbon

• It refers to the carbon emissions that are generated during the operation and use phase of the building throughout its useful life.
• It includes emissions associated with energy used for heating, cooling, lighting, electrical systems, and any other ongoing process in the building.
• These emissions are directly proportional to the building's energy consumption and can be reduced through energy efficiency and the use of renewable energy sources.

Embedded Carbon

• It refers to the carbon emissions associated with the production, manufacture, transport and installation of the construction materials used in the building.
• It includes the carbon emissions released before the building comes into operation and throughout its useful life.
• These emissions are related to the extraction of raw materials, the manufacture of materials, the transportation of these materials to the construction site and the construction itself.
• Reducing embodied carbon involves selecting more sustainable materials and optimizing the supply chain.

Why is reducing embodied carbon important?

1. Contribution to Global Emissions: As mentioned, cement manufacturing and steel production are significant sources of carbon emissions. Since a substantial part of these emissions are linked to building construction, reducing embodied carbon in the construction industry can contribute significantly to the reduction of carbon emissions globally.
2. Compliance with Sustainability Objectives: Many countries and organizations have goals to reduce greenhouse gas emissions to combat climate change. The reduction of embodied carbon is essential to meet these objectives and to move towards a more sustainable and low-emission economy.
3. Long Term Impact: Although the operational carbon (emissions during the operating phase) of a building is important, embodied carbon has a significant impact from the start and throughout the building's lifespan. Reducing initial carbon emissions can have a long-term positive impact on the building's total carbon footprint.
4. Economy and Energy Efficiency: Reducing embodied carbon is often associated with choosing more efficient and sustainable materials and construction methods. This can lead to the construction of buildings that are more energy efficient and, therefore, with lower operating costs over time.
5. Regulations and Regulations: Increasingly, governments and organizations are implementing regulations and standards that require the reduction of embodied carbon emissions in construction. Compliance with these regulations can be essential for obtaining building permits and avoiding penalties.

In short, reducing embodied carbon in construction is crucial to combat climate change, meet sustainability objectives, and build more efficient and resilient buildings in the long term. In addition, since a large part of the total carbon emissions of new buildings come from initial emissions, it is essential to address this aspect to achieve a more sustainable and environmentally friendly construction.

Why is operational carbon reduction important?

1. Reducing Greenhouse Gas Emissions: As mentioned, energy efficiency measures have the potential to reduce a large percentage of global greenhouse gas emissions. This is essential to combat climate change and limit its impact on the environment and human health.
2. Cost Savings: Improving energy efficiency in buildings, machinery and systems can result in significant savings in long-term operating costs. Less energy consumed means lower utility bills and a faster return on investment in energy efficiency projects.
3. Resilience and Durability: The most efficient buildings and systems tend to be stronger and more durable. This means that they are less prone to power interruptions and have a longer lifespan, reducing the need for costly replacements and reducing waste generation.
4. Greater Comfort: Energy efficiency can improve comfort in buildings by providing a more stable temperature, better indoor air quality and less variability in environmental conditions.
5. Productivity: More comfortable and healthy work and living environments can increase people's productivity. Workers and residents in efficient buildings tend to be more satisfied and productive.
6. Decarbonization of the Energy Network: Energy efficiency contributes to the decarbonization of the energy grid by reducing energy demand. This facilitates the transition to renewable energy sources by reducing the need for fossil energy.
7. Compliance with Regulations and Standards: Many countries and regions have regulations and standards that require minimum levels of energy efficiency in buildings and equipment. Compliance with these regulations is essential for project approval and the legal operation of buildings.

In short, energy efficiency is a key strategy for addressing critical issues such as climate change, operating costs, resilience and quality of life. In addition, it contributes to the decarbonization of the energy grid and supports long-term sustainability in all sectors of society.

Net Zero Carbon Building Commitment