Garland Power & Light serves most, but not all, of Garland
GP&L is owned by the City of Garland and has provided municipal electric service for generations. The city’s current resident information states that GP&L is the sole provider for about 85% of residents. That is an unusually useful official figure because it shows both sides of the local market: most addresses are municipal, but a meaningful minority are not.
Do not translate the 85% figure into a map assumption. City streets, ZIP codes and utility boundaries do not necessarily line up neatly. The City of Garland specifically tells residents who are unsure whether GP&L serves them to identify their electric provider. Address verification should therefore precede any rate comparison.
This makes Garland different from nearby Irving, where the city directs electric outage issues to Oncor and competitive REP shopping is the normal retail model. Compare Irving electricity rates to see how two DFW cities can have different electricity structures.