Why is the Atlantic Sunrise expansion needed?

Williams’ Transco pipeline network transports 12 percent of the natural gas consumed in the U.S. For decades the majority of that gas originated in the Gulf of Mexico, but today an increasing amount of that gas is coming from Pennsylvania.

Once the Atlantic Sunrise project is placed into service, it will extend the reach of our existing Transco infrastructure so that natural gas consumers all along the East Coast (local distribution companies, manufacturers, power plants, etc.) will have direct access to Marcellus supply originating in northeast Pennsylvania. This is highly sought after because natural gas sourced from this Marcellus supply area trades at a lower cost than natural gas originating from other basins (such as the Gulf of Mexico and Canada).