This paper looked at how CO2 emissions from energy use in Nigeria changed over nearly 40 years, focusing on factors like energy intensity and fuel types. The researchers used a method called Logarithmic Mean Weight Divisia Index to analyze this. They found that between 1981 and 1989, carbon emissions decreased due to lower energy use intensity and changes in fuel types. But after 1990, emissions rose again because of higher energy intensity and a shift to more carbon-intensive fuels. To reduce Nigeria's carbon emissions in the future, cleaner fuels and improved energy efficiency are crucial.