Texas TDU · Oncor

Oncor on the wires.

The largest TDU in Texas — runs the wires across most of north and central Texas, including the Dallas-Fort Worth metroplex. Owned by Sempra Energy. Sets the delivery rate (~3-5¢/kWh) that's included in every plan from a competitive REP in Oncor territory.

117

Plans

18

Providers

402+

Cities

Oncor profile

InsideOncor.

Oncor is the largest electric transmission and distribution utility in Texas — and one of the largest in the U.S. by miles of line. Owned by Sempra Infrastructure (formerly Sempra Energy) with a minority stake held by AIMCo (Alberta Investment Management Corp). Operates 143,000+ miles of distribution lines covering ~13 million Texans across 400+ cities, including most of DFW, Tyler, Waco, Killeen, Midland-Odessa, and a swath of West Texas.

Reliability & outage history

SAIDI (System Average Interruption Duration Index) typically runs 80-120 minutes per customer per year, which is competitive for a utility of Oncor's geographic spread. Major events: Winter Storm Uri in February 2021 caused widespread Oncor outages tied to ERCOT load-shed orders (not equipment failure). Severe-storm exposure is moderate — DFW spring storms are the dominant outage cause in a normal year.

Who you call

Call Oncor for any power-out, downed line, meter, or service-connection issue: 1-888-313-4747. Do not call your retail provider — they can't dispatch crews. Call your REP only for billing, plan changes, or rate questions.

Notable facts

  • ·Largest TDU in Texas by customer count (about 3.8M meter points).
  • ·Operates the SmartMeter Texas (SMT) program — the customer-facing usage portal that REPs read from to bill you.
  • ·Recovery rate for the TDU delivery charge runs about 4.2¢/kWh plus a ~$3.42/month base charge (PUCT-set, identical across every REP plan on the Oncor grid).

Oncor delivery charges

What Oncor charges to deliver power.

The TDU portion of your bill is identical regardless of which provider you pick. Roughly 4.2c/kWh on energy delivered, plus a $3.42 monthly meter charge. Set by the PUCT, updated on rate-case schedules — no provider can negotiate it.

4.2c

per kWh

$3.42

monthly

Oncor questions

Oncor FAQ.

What does Oncor actually do?

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Oncor Electric Delivery owns and maintains the wires, poles, transformers, and meters across north & central texas, including the dfw metroplex. They don't sell you electricity — they deliver whatever your retail provider buys from the wholesale market. Their delivery charge (set by the PUCT) is identical across every provider's plan you see.

Can I switch off Oncor?

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No. Your TDU is geographic — it's determined by your address, not your choice. What you can switch is your retail provider, which changes who bills you and what per-kWh rate you pay. The wires, the meter, and the outage line all stay with Oncor.

What is Oncor's outage number?

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Call 1-888-313-4747 for any power-out, downed-line, or meter emergency. Don't call your provider — they can't dispatch crews. Save this number in your phone before you need it.

Why does Oncor show up on my bill?

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Every Texas provider passes the TDU delivery charge straight through to your bill, usually as a separate line item. On Oncor territory that's roughly 4.2c/kWh plus a $3.42 monthly meter charge. It's not negotiable and it's identical across providers — when one plan looks cheaper, the difference is in the energy charge, not the delivery fee.

Find your best plan on Oncor

Enter your ZIP and we'll show every plan available on the Oncor grid — sorted by true cost at your home's actual usage.

No spam · It's free · Takes 60 seconds

How enrollment works

You pick the plan here. Enrollment finishes on our secure checkout — same rate, no markup. If you'd rather skip the ZIP entry, Live Link pulls your real usage from Smart Meter Texas in about 30 seconds. Same plans, same checkout, less typing.