Pennsylvania has three major electric utilities: PECO (Philadelphia metro), PPL (central PA including Allentown, Lancaster, Harrisburg), Duquesne Light (Pittsburgh metro). Each has a different price-to-compare and supplier list. 2026 PTCs are PECO 11.6 cents, PPL 11.9 cents, Duquesne 12.4 cents per kWh. The PUC certifies suppliers uniformly but each utility maintains its own bundled tariff and supplier-choice marketplace. Switching saves 6 to 14 percent across all three.
The three utilities and their territories
PECO (Philadelphia Electric Company) serves Philadelphia + Bucks, Chester, Delaware, Montgomery, York counties. Largest electric utility in PA by customer count.
PPL Electric Utilities serves central PA: Lancaster, Lehigh, York, Berks, Schuylkill, Lackawanna, Luzerne, plus parts of Wyoming Valley. Second-largest PA electric utility.
Duquesne Light serves Allegheny County (Pittsburgh metro) and parts of Beaver County. Smallest of the three but covers the most concentrated metro area in western PA.
PTC spread and what drives it
2026 PTCs: PECO 11.6 cents per kWh, PPL 11.9 cents, Duquesne Light 12.4 cents. The 0.8-cent spread reflects different procurement contracts, capacity zones, and transmission costs.
Duquesne's higher PTC reflects western PA's distance from PJM coal and gas generation centres and higher transmission costs to bring power into the Pittsburgh area. PECO benefits from proximity to gas-fired peakers along the southeast PA corridor.
Cross-utility rules and capacity zones
A single supplier can be PUC-certified to serve all three utilities. The supplier's offers differ by utility because each utility has a different capacity zone and delivery cost structure.
When shopping PaPowerSwitch, filter by your specific utility. Offers shown for PECO do not apply to PPL or Duquesne customers, even if the supplier name is the same. The capacity charge differs significantly across the three zones.
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Further reading