Pennsylvania has 7 natural gas utilities. The three largest — Columbia Gas of Pennsylvania, UGI Utilities, and Peoples Natural Gas — cover roughly 68 percent of residential customers. Each utility has its own price-to-compare. Supplier choice runs through the PUC; suppliers can sell across multiple gas utilities but must register separately for each. 2026 gas PTCs vary from $0.65 to $0.92 per CCF. Locked rates typically come in 12 to 22 percent below the PTC.
The three largest PA gas utilities
Columbia Gas of Pennsylvania serves central and western PA outside of Pittsburgh proper. Largest by customer count. UGI Utilities serves northeast and eastern PA including most of the Lehigh Valley. Peoples Natural Gas serves Pittsburgh and western PA suburbs.
The remaining 4 PA gas utilities (Equitable Gas, National Fuel, Philadelphia Gas Works, Valley Energy) serve specific territories. Each has its own rate filings with the PUC.
Default rate spread across the three
2026 PA gas PTCs: Columbia roughly $0.78 per CCF, UGI roughly $0.84, Peoples roughly $0.92. The spread reflects different procurement costs and pipeline-capacity allocations.
Peoples Pittsburgh runs the highest default because western PA gas demand and pipeline capacity charges run higher. Columbia central PA benefits from proximity to Marcellus shale gas production.
Supplier list size by utility
Columbia: roughly 18 to 25 active suppliers. UGI: roughly 12 to 18. Peoples: roughly 10 to 15. The variation reflects market size and supplier acquisition costs in each territory.
All three utilities accept supplier choice through PaPowerSwitch.com. Locked rates typically come in 12 to 22 percent below the utility default across all three.
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