Introduction: This paper examines the relationship between energy use (ENU) and gross capital formation (GCF) with the gross domestic product (GDP) growth rate in 73 countries. Countries are grouped according to the World Bank classification on income: high (30 countries), medium high (21 countries) and medium low (22 countries). Countries with a low income level are excluded due to insufficient data. The reason why the GCF is included is to study how it influences jointly with the ENU in the GDP growth since the GCF considers machinery and capital goods that require energy. Methods: Unit root and cointegration tests of panel data are performed, as well as estimates of fully modified ordinary least squares and dynamic ordinary least squares of data panel.
