In the period from July 10 to 14, 2023, a professional training course called "Carbon Accounting" was held in Singapore, which was the result of long-term research and application of the green economy, and which was implemented through the technical support program of the Singapore government. Singapore has been providing technical support to other developing countries since the 1960s, and in terms of economic and social development it has also emphasized the importance of investing in human resources. In the course of series of training course lectures, experts from Singapore provided an introduction to the carbon emissions accounting, as well as to the inventory of gases with a greenhouse effect (GHG - Greenhouse Gas). Topics covered in the training course were the impact of greenhouse gases on climate change, setting targets for reducing the greenhouse gas effects in Singapore, as well as approaches to calculating and monitoring the impact of carbon emissions. This paper presents topics based on the calculation of carbon emissions, the concepts of Scope 1, Scope 2, and Scope 3 emissions, which are part of the carbon emissions accounting and reporting on greenhouse gas (GHG) emissions. Certain facts about the carbon emissions accounting in the territory of the Republic of Singapore, as well as the connection of carbon accounting with the population and industry, have also been presented. Moreover, an application for calculating one's own carbon footprint has been presented, along with the photographs taken during the period of stay in this island city-state.