In 2023, 5.2 billion cubic feet per day (Bcf/d) of natural gas intrastate pipeline capacity was added in the United States, according to our recently updated Natural Gas Pipeline Projects Tracker. Intrastate pipelines are within a single state (that is, they do not cross state lines) and are regulated by state agencies. Interstate pipelines cross state and international borders and are regulated by the Federal Energy Regulatory Commission (FERC).
