Climate Calculations According to the GHG Protocol – From Reporting to Climate Management

The GHG Protocol gives companies a common structure for measuring, reporting, and following up on greenhouse gas emissions. But the value of a climate calculation does not lie only in being able to report a result. The real benefit arises when the data is used to understand what drives emissions and which measures have the greatest effect.

As requirements for transparency, traceability, and reporting increase, the quality of the underlying environmental data becomes increasingly important. Companies that invest in better data and more detailed analyses are better equipped to make well-founded decisions, prioritize the right actions, and follow up on their climate work over time.

Climate calculations are therefore not only about measuring climate impact — they are about creating knowledge that can be used to reduce it.

What Is the GHG Protocol?

The GHG Protocol, or Greenhouse Gas Protocol, is the world’s most widely used standard for climate accounting. The framework was developed by the World Resources Institute, WRI, and the World Business Council for Sustainable Development, WBCSD, to create a common method for how organizations calculate and report greenhouse gas emissions.

The purpose of the GHG Protocol is to create structure, transparency, and comparability in companies’ climate work. By categorizing emissions and defining common principles, it becomes possible to track climate impact over time and identify where the largest emissions arise.

The standard forms the basis for large parts of today’s climate reporting and is also used within regulations and initiatives such as CSRD, ESRS, and the Science Based Targets initiative, SBTi.

What Are Climate Calculations Used For?

Climate calculations help companies understand where emissions arise and which activities drive climate impact. The results can be used to:

• map emissions across the entire value chain
• identify emissions hotspots
• prioritize climate actions
• follow up on climate targets
• meet reporting requirements under, for example, CSRD and ESRS
• communicate climate work to customers, investors, and other stakeholders

The Climate Work of the Future Requires Transparent Environmental Data

The standards are clear that climate calculations should not only show the size of emissions — they should also create knowledge about where emissions arise, why they arise, and identify measures that can reduce climate impact.

This means that climate data needs to become more transparent, traceable, and useful. Organizations that establish a systematic approach early on are better positioned to understand their climate impact, prioritize the right measures, and follow up on the effect of their actions. Climate data then becomes not only a basis for reporting, but a tool for management, development, and business decisions.

Many Companies Have Climate Data — But Lack Sufficient Precision

Most companies already have access to large amounts of relevant data. This may include purchases, energy, transport, materials, products, suppliers, and waste. The challenge is to convert this information into a reliable decision-making basis that shows which parts of the business drive climate impact.

General emission factors and calculation methods based on standard assumptions can be a good starting point and are often sufficient for an initial climate report. But they provide limited guidance when a company wants to understand the causes behind emissions, compare suppliers, follow up on actions, or prioritize between different alternatives.

For climate calculations to be useful in practice, higher precision is therefore required. This means being able to link climate impact to the right activity, product, material, supplier, or process. It also means being able to track how results change over time and understand whether the change is due to actual improvements, changed purchasing patterns, or improved data quality.

From Reporting to Climate Management

For companies that want to work actively with sustainability, the focus is shifting from simply reporting emissions to improving the quality of the data behind the calculations. When climate data becomes more detailed and traceable, it can also be used in purchasing, product development, supplier dialogues, and strategic decisions.

This is where climate calculations create real value. By identifying the largest emission sources and understanding what drives them, a company can focus on the measures that have the greatest effect. This may involve changing materials, setting clearer requirements for suppliers, improving energy use, increasing the share of recycled content, or optimizing use.

The goal is to move from climate reporting to climate management — from measuring emissions to actively reducing them.

Scope 1, 2, and 3 in the GHG Protocol

To create structure, the GHG Protocol divides emissions into three categories: Scope 1, Scope 2, and Scope 3.

Scope 1 – Direct Emissions

Scope 1 includes the direct greenhouse gas emissions that arise from sources owned or controlled by the organization.

Examples include the combustion of fuels in owned facilities, company-owned vehicles, or industrial process emissions.

Scope 2 – Purchased Energy

Scope 2 includes indirect emissions from purchased energy, such as electricity, district heating, or district cooling.

Scope 3 – Emissions in the Value Chain

Scope 3 includes the organization’s other indirect emissions and is, for many companies, the largest emissions category.

This includes, for example:

• purchased goods and services
• raw materials
• transport
• waste
• business travel
• capital goods
• use of sold products

For many organizations, Scope 3 accounts for more than 90 percent of the total climate impact.

How Miljögiraff Helps

Miljögiraff helps companies create climate calculations and environmental data that are robust, transparent, and useful. With our expertise in life cycle assessment, climate calculations, and environmental data, we can go deeper than general standard assumptions and help you build a data foundation that works for both reporting and decision-making.

We help you structure operational data, choose relevant emission factors, improve data quality, and identify where more specific data is needed. This may mean moving from cost-based calculations to more precise calculations based on materials, product data, supplier information, EPDs, or LCA results.

In this way, the climate calculation becomes not just a report, but a practical tool for reducing climate impact and developing the business in the right direction.