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Corporate carbon footprint – Scope 1, 2 and 3 (GHG Protocol)

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Full inventory of Scopes 1, 2 and 3 under the GHG Protocol

A report ready for your customers, tenders, CSRD and supply chain questions

Full support: from data collection to your own calculator for the next years

Are your customers asking for your carbon footprint? Talk to us.

Definition

What is a corporate carbon footprint?

A corporate carbon footprint is the total greenhouse gas (GHG) emissions from your company's activities in one year. It is shown in tonnes of carbon dioxide equivalent (t CO₂e).

We calculate it under the GHG Protocol, the main international standard. It sorts emissions into three scopes:

Scope 1

Direct emissions from sources your company owns or controls. For example, fuel burned in boilers, vehicles or production processes.

Scope 2

Indirect emissions from the electricity, heat, cooling or steam that your company buys.

Scope 3

All other emissions in your value chain. For example, purchased goods and services, transport, business travel, waste, and the use and end of life of the products you sell.

With all three scopes, you see your full impact on the climate. This is the starting point for reliable sustainability reporting and for a plan to cut emissions. Read more about the corporate carbon footprint and how to report it.

When

When does a company need a carbon footprint?

Your customers ask for it

Your customers need supplier data for their own Scope 3.

Tenders and purchasing rules

CO₂ is one of the criteria in many tenders.

Preparing for CSRD and ESG

Investors, banks and regulators ask for emissions data.

Higher cost of emissions (ETS2)

From 2028, the new EU ETS2 puts a carbon price on fuels for buildings and road transport. Companies that know and cut their footprint are ready for this cost.

Input data

What data do we need?

Scope 1
—Fuel used in your buildings
—Fuel used by your vehicles
—Refrigerants
—Process emissions, if you have them
—Agricultural sources, if you have them
Scope 2
—Electricity use
—List of your energy suppliers
—Guarantees of origin you bought
—Use of district heat, steam or cooling
Scope 3
—Purchased goods and services
—Logistics data: weight, distance and mode of transport
—Business travel and employee commuting
—Waste data
—Products sold
Scope of the service

Carbon footprint audit and analysis: what the service includes

You get more than one number. We analyse your emission sources, so you see where your footprint really comes from and what you can reduce.

Our work includes three parts:

Emissions inventory

We collect and organise data on energy, fuels and other sources in Scopes 1, 2 and 3.

Data audit and analysis

We check that the data is complete and correct. We choose the right emission factors and show the sources with the largest share of your footprint.

Report and recommendations

A clear report for CSRD and ESG use, with ideas for cutting emissions and a baseline for the next years.

With this scope, you can calculate your footprint, report it and reduce it. If you need it, we can also prepare you for an independent verification of your carbon footprint.

Why us

Why calculate your carbon footprint with EXERGY?

Proven method

We have developed our own methods for collecting data and preparing the report.

Full support

Onboarding training, your own calculator and updates.

Experience

We have calculated carbon footprints since 2017.

On time

In 2024, we finished 65 of 74 projects before the deadline.

Team

Meet the team

Experienced EXERGY specialists run every project with our own proven methods. We do not give consulting work to subcontractors. We have worked in this field since 2017.

Meet the team →
How we work

How do we work with you?

Our specialists help companies calculate their carbon footprint at every stage of a project.

01

First consultation

You talk to one of our specialists. Together, we agree on the goal of the work and the main assumptions.

02

Proposal

Within one working day, we send you a proposal with the details of the work.

03

Work and report review

Near the end of the work, we present a draft report. Your comments go into the final report.

04

Training and workshops

If your team wants it, we prepare a course or workshops. Then you can do this work yourselves in the future.

Contact

Let's talk about your company's carbon footprint

Are your customers asking for your carbon footprint?

Leave your contact details in the form and our consultant will call you. Our English-speaking team works during CET business hours.

Fill in the form

We use your details only to reply to your enquiry. More in our privacy policy.

FAQ

What to know about a carbon footprint before you start

Frequently asked questions.

1. A customer asked for our carbon footprint. What does it mean?+
The request can mean one of several analyses. It can be the carbon footprint of your organisation, most often Scopes 1 and 2. It can be the footprint of a product, for example from cradle to gate. It can also be an emissions intensity figure, for example per euro of revenue or per unit of product. Before you reply, ask your customer what information they need. This avoids misunderstandings.
2. Which standards do you use to calculate a carbon footprint?+
To make results reliable and comparable, companies use recognised methods: the GHG Protocol, ISO 14064-1 for organisations and ISO 14067 for products. These standards say which emissions to include, how to collect data and how to present the results. Your report is then useful inside your company and for your partners.
3. How often do companies calculate their carbon footprint?+
It varies. Some companies calculate it every year because they track climate targets or prepare sustainability reports. Others update it every few years, if customers or the law do not ask for more. Many also update it after a big change, such as a new investment or a new business model.
4. Do you always need to calculate Scope 3?+
It depends on your company and on the purpose. A smaller company that wants to know its direct and energy emissions often calculates only Scopes 1 and 2. Companies that prepare sustainability reports or want to see their impact across the value chain should add Scope 3. You often do not calculate all Scope 3 categories, only the most important ones. For example, purchased materials, transport or waste.
5. Which Scope 3 categories do companies calculate most often?+
It depends on the sector. For manufacturers, the largest shares usually come from three areas. The first is purchased goods and services (category 1). The second is transport and distribution (categories 4 and 9). The third is the processing and use of sold products (categories 10 and 11). We start every project with a screening of all categories. It shows which areas to calculate in detail and to report in the future.
6. Does an auditor need to verify the carbon footprint report?+
For most companies, no law requires it. Companies that report under the CSRD need limited assurance of their sustainability statement, and this includes GHG emissions. Other companies verify their footprint when a customer or an investor asks for it, or when the data goes into a public report. Verification makes your result more credible.
7. Do you need special software for the calculations?+
No. Anyone who knows the method, for example the GHG Protocol, can prepare a carbon footprint report. A simple spreadsheet can be enough. A dedicated tool helps you work faster and avoid mistakes. For a detailed analysis, you may need special software or a specialist. In every case, the report must be reliable, accurate and based on current data.
8. Does a new electricity supplier change your carbon footprint?+
Yes. Your electricity supplier changes your Scope 2 emissions under the market-based method. If you buy electricity from renewable sources, such as wind, sun or water, with guarantees of origin, your market-based emissions go down. You also support a higher share of renewable energy.
9. How is the GHG Protocol different from ISO 14064-1, and which one should you use?+
The GHG Protocol Corporate Standard is the most widely used standard for company emissions. It splits emissions into Scopes 1, 2 and 3. ISO 14064-1 is an international standard with a similar method. Certification bodies and formal verification under ISO 14064-3 refer to it more often. We calculate so that one data set meets both standards. Your report then works for ESRS E1 under the CSRD, for bank questionnaires and for independent verification. Read more about the alignment of ISO and the GHG Protocol and the new Scope 2 rules.
10. Is a report under ISO 14064 enough for the CSRD, your bank and EcoVadis?+
Yes. Emissions data calculated under the GHG Protocol or ISO 14064-1 is the basis for climate disclosures under ESRS E1 (CSRD). The same data answers bank credit questionnaires and the environment sections of EcoVadis and CDP. We prepare the report in a format you can use for all of these, with no need to calculate again.
11. Who has to calculate a carbon footprint?+
The CSRD sets a direct duty for large EU companies. Since the Omnibus changes (Directive (EU) 2026/470), it covers companies with more than 1,000 employees and more than EUR 450 million net turnover. Their climate data follows ESRS E1. In practice, many more companies calculate it. Suppliers whose larger customers ask for Scope 3 data do it. So do companies in tenders with an emissions criterion. Companies that need financing do it too, because banks check climate risk.
12. How long does the calculation take, and what affects the cost?+
Time and cost depend mainly on the scope (Scopes 1 and 2, or Scopes 1 to 3) and on the number of sites. They also depend on the quality of your data. A first footprint takes longer than an update. Scopes 1 and 2 are the fastest. A full Scope 3 with a large supply chain needs more time to collect data. We agree the price and the schedule with you after a first call.