Oncor and CenterPoint Energy are the two largest transmission and distribution utilities (TDUs) in Texas, between them covering most of the state's major commercial markets. Understanding how they differ helps Texas businesses navigate their ERCOT procurement.
Schedule a free energy consultation →
Side-by-Side Comparison
| Factor | Option A | Option B |
|---|---|---|
| Service territory | DFW, North Texas, West Texas | Houston metro and surrounding area |
| Customers | ~10 million | ~2.7 million |
| ERCOT zone | North, West | South Central |
| TDU charge structure | Oncor regulated tariff | CenterPoint regulated tariff |
| REP market | Highly competitive (100+) | Highly competitive (100+) |
Oncor Territory
Oncor is one of the largest electric delivery companies in the United States, serving the Dallas-Fort Worth metroplex and extending west through much of North Texas and into the Permian Basin. The DFW commercial market is one of ERCOT's most competitive — over 100 REPs actively quote commercial accounts in Oncor territory.
CenterPoint Territory
CenterPoint Energy serves greater Houston — ERCOT's South Central zone. The Houston commercial market is equally competitive, with 100+ REPs active. CenterPoint's delivery charges are set by the Texas PUC separately from Oncor's, but both are regulated and non-negotiable with REPs.
Ready to compare commercial energy rates?
We shop 30+ suppliers at no cost to you.
What's Different for Commercial Buyers
The TDU charge differs between Oncor and CenterPoint — these are the regulated delivery fees that appear on your bill regardless of REP. The supply portion (REP rate) is where competition applies and where a broker adds value. Both territories have full REP competition through ERCOT.
Frequently Asked Questions
Does it matter which TDU I'm in for REP competition?
Not significantly — both Oncor and CenterPoint territories have 100+ REPs competing. The TDU affects your delivery charge (non-negotiable) but not the level of supply competition available.
Are Oncor and CenterPoint rates the same?
No. Each TDU has its own regulated tariff approved by the Texas PUC. TDU rates differ between Oncor and CenterPoint, but neither is negotiable with your REP.
Can I switch REPs in both Oncor and CenterPoint territory?
Yes. The REP switching process is the same in both territories — standard ERCOT process, one billing cycle, no service interruption.