United States carbon profile

United States emits roughly 4.90 Gt of CO₂ per year — about 13.1% of global emissions, ranking #2 worldwide. At 14.9 tonnes per person (#6 per capita), its footprint is well above the global average of ~4.7 t.

Emissions have edged down over the past five years (-5%) and declined steadily over the decade (-13%). The sustained downward trajectory suggests structural decarbonization rather than a one-off dip.

Renewables supply about 22% of electricity. Electricity remains dominated by fossil fuels, making the power sector the biggest decarbonization lever.

Emissions are likely to stay near current levels through 2030 absent major policy change. Accelerating renewable build-out is the highest-impact opportunity.