ZIP 15531 is in Somerset County and Westmoreland County, where EIA-861 records Duquesne Light, Penelec and West Penn Power beside 5 utilities whose customers cannot choose a supplier; the distribution company on your bill decides which applies. Cheapest at 1,000 kWh: Duquesne Light: American Power & Gas of Pennsylvania LLC, variable, 1 month, at 10.19¢/kWh (Price to Compare 14.14¢/kWh); Penelec: American Power & Gas of Pennsylvania LLC, variable, 1 month, at 9.99¢/kWh (Price to Compare 13.142¢/kWh); West Penn Power: American Power & Gas of Pennsylvania LLC, variable, 1 month, at 9.39¢/kWh (Price to Compare 12.075¢/kWh), as listed on PAPowerSwitch on 2026-11-14.
OpenStream holds no Pennsylvania PUC licence as an electric generation supplier, broker or marketer, and earns nothing from any supplier. How we are paid.
More than one distribution company is recorded in Somerset County and Westmoreland County. The one on your bill is the one whose offers and Price to Compare apply; the page ranks each on its own rather than guessing.
Counties from the Census 2020 ZCTA-to-county file (largest land share first); utilities from EIA-861 2023 Service Territory (the last year the four FirstEnergy companies reported separately), both read 2026-11-06.
The Census records Jennerstown, Boswell in ZIP 15531, in Somerset County and Westmoreland County.
Which counties it is in and which distribution companies serve them.