Oncor Electric Delivery · Texas TDU

Oncor: service area, rates, and how it works

Oncor is the largest transmission & distribution utility in Texas — it owns the poles, wires, and meter and delivers your power. It doesn't sell electricity; you pick the retail provider. Here's what Oncor does, what it charges, and how to find your meter.

Enter your address to see your all-in rate in about two minutes.

Researched and written by the Base Power team · Last updated May 27, 2026

How we source this: delivery charges are taken from the utility's PUCT-approved tariff and the PUCT monthly rate reports, and verified against the published bill examples. Rates reset on a schedule — we link the sources so you can check the current numbers.

The short version

Oncor Electric Delivery is the wires company for the Dallas–Fort Worth metroplex and much of North, Central, East and West Texas — more than 4.1 million homes and businesses. Oncor doesn't sell electricity and you can't choose it; it's set by your address. It charges a PUCT-regulated delivery rate (about 6.12¢/kWh plus roughly $4.06/month as of June 1, 2026) that every retail provider passes through at cost, so it's identical no matter who you buy power from. You choose your retail provider — like Base — which sets the energy rate and sends your bill.

Wires vs. retail

How Oncor works

In Texas's deregulated ERCOT market, two different companies handle your electricity. Oncor is the TDU (transmission & distribution utility, also called a TDSP): it owns and operates the poles, wires, substations and smart meters that physically deliver electricity to your home, and it restores power after outages. Oncor does not sell you electricity, and you can't shop for a different wires company — if your address is in Oncor's footprint, Oncor delivers your power no matter which provider you choose.

Your retail electric provider (REP) is who you actually buy electricity from and who sends your bill. The REP sets the energy price and plan terms; Oncor sets the regulated delivery charges, which the PUCT approves. On your bill the REP passes Oncor's delivery charges straight through. Base Power Company (Base Texas REP, LLC; PUCT #10338) is one such REP — it charges a flat energy rate from 8¢/kWh plus Oncor's delivery charges passed through with no markup, plus a flat monthly membership. Switching to Base (or any REP) never changes who maintains your wires or restores your power: that's always Oncor.

Parent company

Sempra (NYSE: SRE), ~80%; Texas Transmission Investment, ~20%

Headquarters

Dallas, Texas

Delivers to

4.1M+ premises

Service area

98+ counties

History: Oncor traces back more than a century through legacy Texas utilities (Dallas Power & Light, Texas Power & Light, Texas Electric Service Company) consolidated under TU Electric and TXU Electric Delivery, and was renamed Oncor in 2007 during the TXU/Energy Future Holdings buyout. After EFH's 2014 bankruptcy, Oncor was ring-fenced and protected from the parent's debt; Sempra completed its acquisition of a majority stake in March 2018. Oncor remains a wires-only utility — it does not sell electricity to consumers.

PUCT-regulated delivery

Oncor delivery charges

Oncor's delivery charge is the same for every Oncor home regardless of retail provider, because it's set by the PUCT, not your provider. A transparent REP passes it through at cost; the only part a provider marks up or competes on is the energy charge and any plan fees.

Volumetric charge

6.1196¢

per kWh delivered

Fixed monthly

$4.06

$1.48 customer + $2.58 metering

At 1,000 kWh

$65.26

estimated monthly delivery, before your energy rate

These rates took effect June 1, 2026 from Oncor's base-rate case (PUCT Docket 58306), and replaced the prior ~5.60¢/kWh + $4.23/mo. Oncor applies one residential delivery tariff uniformly — there are no separate geographic rate zones.

Effective June 1, 2026; verified against the PUCT rate report on May 27, 2026. TDU rates reset periodically — your plan's Electricity Facts Label shows the exact current figure.

Where it delivers

Oncor service area

Oncor's territory covers North, Central, East and West Texas — from the Dallas–Fort Worth metroplex south toward Waco and west toward Midland–Odessa — across more than 98 counties and 400+ communities, roughly 117,000 square miles. It is the largest TDU in Texas and one of the largest in the U.S.

Texas cities Base serves in Oncor territory

Larger cities in Oncor territory

  • Dallas
  • Fort Worth
  • Arlington
  • Plano
  • Irving
  • Garland
  • Frisco
  • McKinney
  • Denton
  • Waco
  • Killeen
  • Temple
  • Round Rock
  • Tyler
  • Midland
  • Odessa
  • Wichita Falls

Service areas are set by your address, not your city name — neighboring streets can be on different utilities. Your ESI ID is the reliable test (see below).

Storms & restoration

Reliability and outages

Oncor reports relatively strong reliability for a utility of its size: for the 12 months ending December 31, 2025 (excluding major storms), it reported SAIDI of about 78 minutes, SAIFI of about 1.1 interruptions, and CAIDI of about 70 minutes per interruption. As a wires-only utility, Oncor is responsible for the lines, substations and meters that deliver power — not for generating or selling it.

If your power is out

Report outages to Oncor, not your retail provider — Oncor operates the wires and handles restoration. Call Oncor's 24/7 line at 1-888-313-4747, or check the live map at stormcenter.oncor.com. Your retail provider (such as Base) can't restore grid power; only the TDU can. A home battery from Base backs up your own home during an outage, but that's a separate product and doesn't change Oncor's grid.

Oncor outage map → Call 888-313-4747

Your meter ID

Finding your ESI ID in Oncor territory

Every meter has an ESI ID (Electric Service Identifier, also written ESIID) — the unique number your provider uses to start or switch service at your exact address. Texas ESI IDs begin with '10'; Oncor's commonly begin with '1044'. You'll find yours on your electricity bill or via Oncor's address lookup at oncor.com/esiid-lookup, and a provider can look it up for you during enrollment.

Look up your address

Enter your address and we'll match it to your meter and your local utility, then show your Base rate. (Exact pricing always lives on the Electricity Facts Label.)

Oncor FAQs

No. Oncor is your TDU (transmission & distribution utility) — it owns the poles, wires and meter and physically delivers power, but it does not sell you electricity. You buy your electricity from a retail electric provider (REP) such as Base Power Company (Base Texas REP, LLC; PUCT #10338). Your REP sets your energy rate and sends your bill; Oncor's delivery charges are passed through on that bill. You can switch REPs anytime, but Oncor remains your delivery utility as long as you live in its service area.
As of June 1, 2026, Oncor's residential delivery charge is about 6.12¢ per kWh plus a fixed monthly charge of about $4.06 (a $1.48 customer charge plus a $2.58 metering charge). For a home using 1,000 kWh in a month, that's roughly $65.26 in Oncor delivery charges before your provider's energy rate. These figures reflect Oncor's rate case (PUCT Docket 58306), whose new rates took effect June 1, 2026. TDU rates reset periodically (typically around March 1 and September 1), so always confirm the current number on your plan's Electricity Facts Label.
Report outages to Oncor, not your retail provider — Oncor operates the wires and handles restoration. Call Oncor's 24/7 outage line at 1-888-313-4747 or check the live outage map at stormcenter.oncor.com. Your retail provider (such as Base) can't restore grid power; only the TDU can.
No. Oncor's delivery charges are set by the PUCT and are the same regardless of which retail provider you pick — providers pass them through (Base passes Oncor's delivery charges through with no markup). Likewise, your wires, meter and outage restoration are always handled by Oncor, so switching providers doesn't change your grid reliability. A home battery from Base backs up your own home during an outage, but that's a separate product and doesn't change Oncor's grid or your delivery service.
An ESI ID (Electric Service Identifier) is the unique number for your specific meter/address that a provider uses to start or switch service. In Texas it's a number that begins with '10'; Oncor ESI IDs commonly begin with '1044'. You can find yours on your current electricity bill or by entering your address in Oncor's lookup tool at oncor.com/esiid-lookup.

Other Texas utilities

Shopping by city instead? See electricity rates by city or how to choose a provider.

You can obtain important standardized information that will allow you to compare this product with other offers. Contact Base Power at 512-518-1009 or basepowercompany.com.

Oncor delivers it — Base prices it

Same Oncor wires, same regulated delivery charges, passed through with no markup — plus a flat 8¢/kWh energy rate and a flat $19–$29/mo membership. No teaser pricing or bill-credit games.

Takes about two minutes.

Sources

Plan documents: Electricity Facts Label (EFL) · Terms of Service & Your Rights as a Customer. Products and pricing are offered to qualified customers in Texas only.

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