U.S. carbon emissions dropped in 2023 for the first time since the pandemic, with the fall in emissions mainly concentrated in the power sector, according to a new report from BloombergNEF.

In its latest Sustainable Energy in America report released early Wednesday, the research organization reported that the United States emitted 6.2 billion metric tons of greenhouse gas emissions, a 1.8% drop from the year before, with emissions falling in almost every sector except transportation. The last time the U.S. has had emissions this low, besides 2020, was nearly four decades ago in 1987.