WMB · Williams Companies, Inc. · Investor Relations

One customer — 31% of revenue (the year ended December 31, 2025)

“NWP's largest customer was Puget Sound Energy, Inc., which accounted for approximately 31 percent of its operating revenue.”

One customer — 9% of revenue (the year ended December 31, 2025)

“For the year ended December 31, 2025, Transco's largest customer was Duke Energy Corporation, which accounted for approximately 9 percent of its operating revenue”