Carbon Footprint Calculation Methods

Reducing the damage caused by human activities to the environment is of great importance in leaving a livable world for future generations. Calculating the carbon footprint in order to take the necessary steps to achieve the sustainability goals developed in this direction is the first essential stage for realizing and reducing environmental impacts. Let's look together at the importance of carbon footprint calculation, different carbon footprint calculation methods, and what needs to be considered to choose the right method.

What is a Carbon Footprint?

Carbon footprint refers to the amount of greenhouse gas emissions arising from various activities of people or organizations in terms of carbon dioxide equivalents. This measure is used to determine how much greenhouse gases released into the atmosphere contribute to global warming. When the carbon footprint of companies decreases, their carbon emissions and therefore their impact on global warming also decrease. Expressed in CO2, this measure is important in creating a green future where resources are used consciously.

It is possible to examine greenhouse gas emissions in two different categories: direct emissions and indirect emissions. Using fossil fuels to run car engines or heat buildings can be given as examples of direct carbon emissions. On the other hand, greenhouse gas emissions that occur due to the consumption of electricity obtained using fossil fuels can be expressed as indirect carbon emissions. Methane, nitrogen oxide, and chlorofluorocarbons produced by animals on large livestock farms are also included in these emissions.

Why is the Carbon Footprint Important?

To understand the importance of the carbon footprint, it is necessary to better know the ecological impacts of this measurement. Fossil fuels, which are extracted from underground and burned, causing an increase in the amount of CO2 in the atmosphere, increase the greenhouse effect. Sun rays, which normally return to space after reaching Earth, are trapped in the atmosphere due to increased carbon retention. The gas that cannot return to space leads to an increase in Earth's average surface and sea temperatures. These increases cause extreme weather events such as heavy rainfall, floods, heatwaves, droughts, and forest fires.

Efforts carried out globally against global warming and international agreements signed with the participation of many countries around the world aim to keep global warming between 1.5 and 2 degrees above pre-industrial levels. The main purpose of these studies is to prevent undesirable consequences that may occur if this threshold is exceeded. Melting glaciers, rising sea levels, and loss of biodiversity in aquatic ecosystems are just a few of these undesirable consequences. Especially the melting of glaciers and expansion of desert areas can cause irreversible destruction in our world.

Calculating the carbon footprint helps determine strategies in the struggle to prevent such undesirable outcomes.

What Benefits Can Calculating Carbon Footprint Provide?

Accurately calculating the carbon footprint is of great importance object-wise for companies to realize their negative environmental impacts and take necessary measures. Some publicly traded companies need to present sustainability reports to their shareholders and show that they are fighting global warming. Companies must identify emission sources at every point of company operations, from the management of waste in production facilities to the type of electricity used in offices, and obtain accurate data from these sources.

A carbon footprint calculation performed with accurate data can provide the following benefits:

Compliance and Reporting Process

Companies calculating their carbon footprint can develop strategies that will reduce environmental pollution. Identifying targets and taking steps in light of environmental science and sustainability principles, companies find the opportunity to show their determination in reaching sustainability goals. This makes it possible to strengthen customer and investor relations and make them sustainable.

Management of Carbon Emissions

Thanks to the carbon footprint calculation, improvements can be recorded in emission management. Based on these calculations, emission reduction targets are set, and the steps taken to reach these targets can be tracked. Companies determining where high carbon emissions come from can focus their sustainability efforts on these areas.

Cost Advantages and Company Reputation

Carbon management shaped according to carbon footprint calculation can provide cost savings. Companies measuring their carbon footprint can adopt carbon reduction strategies in areas such as energy, transportation, and fossil fuel use, turning to more environmentally friendly and low-cost solutions.

For both consumers and investors, environmental and social practices of companies are extremely important. These calculations, which also align with global sustainability trends and consumer expectations, can support the growth of businesses by positively affecting brand reputation.

Carbon Footprint Calculation Methods

Three different methods—spend-based, activity-based, and hybrid—can be used to calculate carbon footprints. The details of these methods are as follows:

Spend-Based Carbon Calculation Method

Spend-based carbon calculation is a simple method that can be applied by many companies. Using financial data of products and services, spend-based emission factors are utilized in this method. The spend-based carbon calculation method is carried out as follows:

• Data Collection: The spend-based calculation method covers financial data found in expense reports, invoices, or supply records regarding purchases made both in supply network processes and corporately.

• Determining Emission Factors: After the comprehensive organization of financial data, spend-based emission factors can be proceeded to. Data obtained from industrial or national data, enabling the evaluation of emissions caused by products or services, show average greenhouse gas emissions per financial expenditure unit.

• Emission Calculations: In this step, the financial values of products or services are multiplied by the corresponding emission factor. The values obtained through this calculation, applied for all products and services, are totaled and the estimated carbon footprint is determined.

The most fundamental advantage of the spend-based carbon calculation method is that it is extremely simple due to the accessibility of information. Since the financial data to be used for calculation can be easily accessed, the company does not need to conduct a comprehensive research. This is an important factor, especially for companies with limited resources. Secondly, spend-based emission factors can be accessed from public databases as well as industry reports.

Activity-Based Carbon Calculation Method

The activity-based carbon calculation method offers a much more comprehensive approach to calculating companies' impacts on the environment. While applying this method, companies require detailed data of activities occurring within their operations and supply chain. This method, which offers a more precise measurement of carbon emissions, is carried out as follows:

• Data Collection: Data collection is the acquisition of details regarding activities carried out across operations and value chains. The information in question can include many bytes of information from the company's energy consumption to logistic processes.

• Determining Emission Factors: Emission factors show the average greenhouse gas emissions produced by each activity. It is possible to obtain accurate information about emissions related to these factors.

• Emission Calculations: In the calculation phase of carbon emissions, activity data obtained from each process are multiplied by the corresponding emission factor. The sum of these calculations carried out for all activities of the organization shows the company's carbon footprint.

The activity-based carbon calculation method gives both comprehensive and accurate results because the collected data is much more detailed. This detailed data ensures a more precise and accurate calculation of the organization's carbon footprint and effective planning of steps to combat climate change. In addition, access to wider information on emission sources can be provided. Direct and indirect emissions are included in these sources, making it possible to show the company's carbon footprint more clearly.

Hybrid Carbon Calculation Method

In the hybrid carbon calculation method, both spend-based and activity-based calculation approaches are used together. The simple structure of the spend-based method and the data depth of the activity-based method can help achieve a much more effective result. Offering the advantages of two different methods together, the hybrid carbon calculation method provides a comprehensive framework by overcoming the unique limitations of both methods.

Companies adopting the hybrid method benefit from the advantage of flexibility as well as accuracy and manageability. In this method, activity-based data is monitored in a controlled manner. In this way, companies can make clear inferences about emission sources and prepare effective strategies in this direction. In addition, companies can leverage appropriate data sources at different points of their operational and supply networks. The hybrid approach enables a detailed and comprehensive environmental performance evaluation.

Choosing the Right Carbon Calculation Method

The right carbon calculation method can vary depending on both the activities of companies and the data desired to be obtained. Various factors such as the type of company's business, the complex structure of operational processes, and access to data are decisive in choosing the right calculation method. All calculation methods have their own advantages and disadvantages. To understand which method aligns with company needs, all pros and cons must be considered. In companies with complex operational processes, the activity-based calculation method, which is a simpler method, can be preferred. On the other hand, the spend-based carbon footprint calculation method might be suitable for companies that experience no issues in accessing data.

To choose the right method, companies need to identify to what extent they can access data regarding carbon emissions. In cases where it is not possible to evaluate the scope and scale of emissions, deciding on the method can also be challenging. Greenhouse gas emissions are generally evaluated under 3 scopes. Scope 1 shows direct emissions, Scope 2 shows indirect emissions, and Scope 3 shows other indirect emissions related to the supply chain.

Particularly companies that heavily emit direct and indirect emissions can lean towards activity-based calculation methods. However, reaching and tracking data of other indirect emissions evaluated under the third scope can be challenging. Therefore, companies with intensive Scope 3 emissions may prefer spend-based calculation methods.

Factors such as how reliable the data is and how it can be used can be considered when choosing the carbon footprint calculation method. Here, it is possible to make a simpler distinction regarding which method to choose. For example, the activity-based calculation method can be preferred when there is simple, easily trackable, and accessible data; whereas the spend-based calculation method can be preferred in cases where collecting, processing, and tracking data is difficult.

Choosing sustainable methods can provide continuity in companies' carbon footprint calculations. This makes it easier to track progress regarding carbon footprint over the obtained data. Method selection can also be made by considering sectoral needs and investor expectations. Reporting options and requirements should also be determined in accordance with market expectations and investor demands. Investors or partners wanting to see more detailed reports may not be pleased with the use of methods lacking clarity and precision. By taking sector-specific regulations and expectations into account when choosing the carbon calculation method, it is possible to increase transparency and reliability. In addition, whichever method is chosen, it is necessary to use tools that give precise results both when collecting data and making analyses.

Build Trust in Investors by Calculating Your Carbon Footprint!

QuickCarbon is user-friendly software that offers the opportunity to measure and report carbon footprints without the need for consultancy services. Our QuickCarbon software ensures that the corporate carbon footprint is calculated and reported according to the ISO 14064-1:2018 Standard and the GHG Protocol. The reports obtained over the performed calculations can support companies in developing strategies for reducing their carbon emissions.

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