Plains All American Pipeline, L.P. Common Units representing Limited Partner Interests (PAA)

The partnership’s largest business is crude oil. Plains gathers production from oilfields, transports barrels through long-haul pipelines and regional systems, and provides terminaling and storage services that help customers manage supply flows. Its operations are particularly tied to major producing regions such as the Permian Basin, where reliable takeaway capacity and market access are central to producer economics.

Plains also operates an NGL business that includes transportation, storage, fractionation, and related services. Natural gas liquids such as propane, butane, and ethane are used in petrochemicals, heating, blending, and other industrial applications, giving the partnership exposure to energy demand beyond crude oil alone.

As a midstream operator, Plains typically earns much of its revenue from fees, tariffs, and service arrangements rather than direct exploration or production. That makes its performance closely linked to volumes, asset utilization, contract structures, commodity market conditions, and capital discipline. The company is structured as a limited partnership, so investors commonly evaluate PAA through distributable cash flow, leverage, distribution policy, and the durability of its asset base.