The purpose of this study is to use clustering variables according to the Kaya identity, an equation involving energy consumption, economic growth and carbon dioxide emissions. By using aggregate data from the International Energy Agency for a dataset of developed and developing countries, we perform clustering according to variables such as population, gross domestic product (GDP), total primary energy supply (TPES) and total CO2 emissions. We use the estimated clusters to have an overview of the relationship between economic development and carbon dioxide emissions.