Our Underground Energy Delivery Network

A network of more than two million miles of pipeline ranging in diameter from less than an inch to more than 40 inches, safely transports energy products across the country and to homes and businesses.

There are three primary types of pipelines: gathering lines, transmission lines and distribution lines.  Gathering pipelines bring products from their origination source to processing plants, manufacturing facilities and into transmission lines.

Transmission pipelines are typically larger than gathering and distribution lines.  They transport energy products across the country and to storage facilities.  Compressor stations and pumping stations are located along transmission and gathering pipeline routes and help push energy products through the line.  Finally, distribution pipelines bring energy to homes, businesses and manufacturing plants from city gates, facilities that connect with transmission lines.

Read more about how gas and petroleum pipeline systems work and how they are constructed by visiting the Pipeline & Hazardous Materials Safety Administration Web site.