Why Does Corporate Carbon Footprint Calculation Matter?

Selin Sevinç

Sep 27

6 min read

Who Is This Guide For?

Calculating a corporate carbon footprint matters because it measures the greenhouse gas emissions arising from a business's activities, helping the business prepare both for regulation and for the expectations of customers and markets. This guide is written for exporting manufacturers, hotels, businesses within the supply chains of large companies, and companies preparing for sustainability reporting. In plain language, we explain what the calculation is, how it is carried out, which data it requires and what to watch out for along the way.

What Is a Corporate Carbon Footprint and Which Businesses Does It Concern?

A corporate carbon footprint is the total of the greenhouse gas emissions an organisation causes, directly and indirectly, over a given period, expressed in carbon dioxide equivalent (CO2e). The calculation covers not only carbon dioxide but also other greenhouse gases such as methane and nitrous oxide, which are converted into a common unit. In international practice, this work is generally based on the GHG Protocol Corporate Standard and the ISO 14064-1 standard.

Emissions are grouped into three scopes:

Scope 1: Direct emissions from sources owned by the business, such as boilers, generators, company vehicles and refrigerant leaks from cooling systems.
Scope 2: Indirect emissions from purchased electricity, steam or heat.
Scope 3: Other indirect emissions across the value chain, such as purchased materials, transport, business travel, employee commuting and waste disposal.

The topic is particularly relevant for manufacturers exporting to the European Union: for product groups covered by the EU's Carbon Border Adjustment Mechanism (CBAM), importers request data on the embedded emissions of products. A carbon footprint is also a core data source for companies receiving supplier questionnaires from large customers, hotels working with international chains, and companies asked for environmental data in lending or investment processes.

For companies that fall within, or are preparing to fall within, the scope of the Türkiye Sürdürülebilirlik Raporlama Standartları (TSRS, Turkish Sustainability Reporting Standards), emissions data is likewise the basis for climate-related disclosures. As national climate change legislation continues to develop, businesses that start measuring their emissions today will be better prepared for new obligations.

The Carbon Footprint Calculation Process, Step by Step

A carbon footprint calculation is a planned process made up of setting boundaries, collecting data, calculating emissions, reporting, and drawing up a reduction plan. When the steps follow the order below, the results are both consistent and comparable from year to year.

1. Defining the purpose and reporting boundaries

The first step is to clarify why the calculation is being done and which facilities it will cover. The scope of work carried out for a customer request, a CBAM declaration or a corporate sustainability report can differ. At this stage, the organisational boundary (which facilities, branches and companies) and the operational boundary (which emission scopes) are defined in writing.

2. Choosing a base year

To measure emission reductions, a base year is chosen for comparison. The base year should be a period for which data is complete and reliable and which reflects the business's normal activity. Significant changes, such as adding a new facility or selling off a unit, may require the base year to be recalculated.

3. Collecting activity data

Consumption figures for emission sources such as fuel, electricity, refrigerant gases, transport and waste are compiled from invoices, meters and operational records. Data should be backed by documents wherever possible, and any estimates should be clearly noted. This step is the most labour-intensive part of the process and has the greatest influence on the quality of the result.

4. Selecting emission factors and calculating

Each item of activity data is multiplied by a current emission factor from an identified source and converted into CO2e. For electricity, the national grid factor is used; for fuels, values from recognised international sources are applied. The report should state clearly where each factor was taken from.

5. Reporting and verification

The results are reported together with the breakdown by scope, the method used, assumptions and uncertainties. If a customer, investor or relevant regulation requires it, the report can be verified by an independent verification body. A transparently prepared report makes this stage considerably easier.

6. Reduction plan and annual monitoring

The calculation is a starting point; the real value comes from a reduction plan that targets the largest emission sources. Measures such as energy efficiency, use of renewable energy, refrigerant management and logistics improvements are identified, and progress is tracked by measuring again each year.

To plan these steps in a way that suits your business, you can review the scope of our corporate carbon footprint consultancy service.

Information to Prepare for the Calculation

For a sound calculation, the business needs to gather its energy, fuel, transport and waste records for the reporting period. The list below summarises the basic information that can be prepared before work begins:

Organisation chart, list of facilities and the activity of each facility
Electricity bills or meter readings for the reporting period
Purchase and consumption records for fuels such as natural gas, LPG, diesel and fuel oil
List of company vehicles and fuel card statements
Generator operating hours and fuel consumption
Refrigerant type, refill and maintenance records for systems such as air conditioners, cold rooms and chillers
Waste quantities and disposal or recovery methods
Quantities of the main raw materials and supplies purchased
Freight, shipment and business travel records
Where available, energy audits, sustainability reports or ISO 14001 records from previous years

Common Mistakes and Points to Watch

Errors that weaken the reliability of carbon footprint results usually stem from data quality and how the scope is defined. Situations frequently encountered in practice include:

Leaving the scope undefined: If the facilities and sources included are not defined in writing, year-on-year comparison is not possible.
Overlooking refrigerant leaks: Because some refrigerants have a high global warming potential, even small refill quantities can noticeably affect the result.
Using outdated emission factors or factors of unclear origin: The currency and source of factors should be shown in the report.
Unit errors: Failing to convert the units on invoices (kWh, m³, litres, kg) correctly can seriously distort the results.
Treating the calculation as a one-off: A report that is not linked to a reduction plan and annual monitoring brings no lasting benefit to the business.
Ignoring Scope 3 entirely: Even if it cannot all be calculated at the outset, identifying the significant value chain items is valuable for preparing for customer requests.

Notes for Businesses in Antalya

In Antalya, the carbon footprint is a topic that particularly concerns tourism, agriculture and food, construction, and export-oriented industrial businesses. The region's economic structure means that emission sources also vary by sector.

For hotels, the main items are air conditioning and cooling systems, hot water production, pool heating, and energy use in kitchens and laundries. International tour operators and hotel chains may request emissions data from properties as part of their sustainability criteria; the carbon footprint is a tangible indicator in these assessments.

In greenhouse cultivation and agricultural production, heating fuels, fertiliser use and the cold chain are important sources, while in fresh fruit and vegetable exports, transport and packaging stand out. Businesses shipping products to the EU market often receive requests for environmental data from their buyers. For manufacturers in organised industrial zones and for the construction sector, energy-intensive processes and material supply are at the heart of the calculation.

Frequently Asked Questions

Is corporate carbon footprint calculation mandatory?

There is no general obligation for all businesses; however, under current legislation certain facilities are required to monitor and report their greenhouse gas emissions. For companies exporting CBAM-covered products to the EU and for companies within the scope of sustainability reporting, emissions data is also becoming a practical necessity. Current regulatory texts can be accessed via the Mevzuat Bilgi Sistemi (Turkish Legislation Information System); which obligations apply to you should be assessed separately according to your field of activity and scale.

How long does a carbon footprint calculation take?

The timeframe depends on the number of facilities, the chosen scope and how well the data has been kept. For a single-site business with invoices and consumption records to hand, the process moves more quickly; multi-site studies that include Scope 3 take longer. A preliminary data review before the work begins helps to set a realistic timeline.

What is the difference between Scope 1, Scope 2 and Scope 3?

Scope 1 covers direct emissions from the business's own boilers, vehicles and equipment. Scope 2 refers to indirect emissions from purchased electricity and energy, while Scope 3 covers other indirect emissions across the value chain, such as the supply chain, transport and waste. Starting with Scopes 1 and 2 and adding Scope 3 gradually is a practical approach.

Is a carbon footprint study related to ISO 14001?

The ISO 14001 environmental management system does not directly require a carbon footprint calculation; however, energy consumption and emissions can be addressed as significant environmental aspects. In businesses with an ISO 14001 system in place, existing records provide a strong data foundation for the calculation. Carrying out the two together makes it easier to link reduction targets to the management system.

Contact Us

To measure your business's carbon footprint using the right method and build a workable reduction plan, you can get in touch with Asel Çevre Danışmanlık.

Written by Selin Sevinç, Environmental Engineer (MSc), Asel Çevre Danışmanlık.