CO2 calculation

What is a CO2 calculation?

What is a CO2 calculation?

A CO2 calculation is an inventory on the emission of CO2 and other greenhouse gases produced by your electricity consumption or company fleet, etc.


Before starting the Carbon Calculator, you should have at hand the bills and invoices for energy (electricity and district heat) and fuel (petrol, diesel, etc.) for the year, you want the calculation to cover. The individual CO2 calculations can be used for comparing your CO2 emissions year by year. The calculator also gives you an idea of what measures to take to reduce your CO2 emissions. The calculations can provide data when you account for GHG emissions. Accounting for GHG emissions can be relevant to all types and sizes of companies. The most important thing is to get started.


What does it mean to account for GHG emissions?

In theory, accounting for GHG emissions is the same as preparing ordinary financial statements and it comprises various CO2 calculations. Accounting can be based on the Excel report which you can download from the Carbon Calculator after you have completed your calculation. Also, the accounting policies applied should be stated, e.g. the numerical basis underlying the CO2 calculations (which you can print using the Carbon Calculator), setting of organisational boundaries or the entity covered by the inventory and changes in relation to previous years. You should also apply the same system every year to enable comparison of the trend in CO2 emissions in the annual report year by year.


International standards

The Climate Compass and the Carbon Calculator are based on the Greenhouse Gas Protocol Corporate Standard (abbreviated to the GHG Protocol). The GHG Protocol is the most commonly applied reporting standard for calculating a company’s greenhouse gas emissions. Many greenhouse gas emissions programmes use the GHG Protocol method – e.g. Carbon Disclosure Project, Global Reporting Initiative, WWF Climate Savers programme, EU Emissions Trading System, The Climate Registry (USA) and U.S. EPA Climate Leaders (USA). In 2006, the International Organization for Standardization (ISO) introduced a standard for preparing and verifying GHG emissions inventories. ISO 14064.

The Danish Accreditation and Metrology Fund (DANAK) website lists the organisations having been accredited for ISO 14064 verification. The standard is based on the GHG Protocol.


> DANAK website



På Klimakompasset kan du få inspiration til at udarbejde en klimastrategi, som kan reducere din virksomheds udledning af CO2 og andre drivhusgasser.