Energy-related carbon dioxide emissions rose to a record level in 2023, but the growth slowed from previous years thanks to continued expansion of clean technologies, the International Energy Agency (IEA) said today. CO2 emissions from energy rose by 1.1% in 2023, increasing by 410 million tonnes to a record 37.4 billion tonnes, slowing down from a gain of 490 million tonnes in 2022, the IEA said in its annual update on emissions.