Texas Multifamily Utility Programs: Oncor vs. AEP Texas

If you own or manage apartments in Texas, one fact quietly decides which energy-efficiency programs your community can use, which upgrades are eligible, and how the paperwork works: the utility that physically delivers electricity to the property. For most Texas multifamily owners that utility is either Oncor or AEP Texas. They are the two largest transmission and distribution utilities in the state, they run separate energy-efficiency programs, and a property can only participate in the one that serves its address. Knowing your territory before you evaluate any “free thermostat” or rebate offer is the difference between a straightforward project and a wasted week. This guide compares the two side by side so you can tell which one applies to your community.

The two territories

Texas has a deregulated electricity market, which trips up a lot of owners. Residents choose a retail electric provider - the company that bills them and sells them a rate plan. But the poles, wires, and meters that actually deliver the electricity are owned and operated by a transmission and distribution utility, usually shortened to TDU (sometimes TDSP). The TDU is the entity the Public Utility Commission of Texas requires to run energy-efficiency programs. So the retail provider a resident picks has no bearing on program eligibility. What matters is which TDU delivers power to the building. For apartment communities across most of the state, that is one of two companies.

Oncor is the larger of the two by service area and customer count. It delivers electricity across the Dallas-Fort Worth metroplex and much of North, Central, and West Texas - cities such as Dallas, Fort Worth, Arlington, Plano, Irving, McKinney, Denton, Waco, Tyler, and the Midland-Odessa area. If your property sits in the DFW region, it is almost certainly in Oncor territory.

AEP Texasdelivers electricity across South Texas and parts of West Texas. Its footprint includes Corpus Christi, Abilene, San Angelo, Laredo, McAllen, Brownsville, and the broader Rio Grande Valley. Communities in these markets fall under the AEP Texas program, not Oncor's.

The practical takeaway is simple but easy to get wrong: eligibility follows the delivery utility for the physical address, never the resident's retail plan. Two apartment communities on the same street will always share a TDU; two communities in different regions will not. Because the programs are territory-bound, there is no cross-enrollment - a property in AEP Texas territory cannot opt into the Oncor program, and vice versa. That is why the very first step in any multifamily energy project is confirming the territory, not comparing offers.

A few situations trip owners up. Portfolios with communities in both DFW and South Texas will often straddle both utilities, so each property has to be checked on its own address rather than assumed from the company's headquarters or from another asset. Properties near the edge of a metro can sit just outside the territory an owner expects, which is exactly why the check is done against the utility's service map and the specific address rather than by region from memory. Master-metered versus individually metered configurations also affect who the utility's customer of record is - one more reason the territory and account details are verified up front instead of guessed.

How Texas utility programs are funded

Both programs exist for the same reason. The Public Utility Commission of Texas (PUCT) directs the state's transmission and distribution utilities to run energy-efficiency programs that meet annual energy- and demand-savings goals. The money to fund those upgrades is collected through utility rates, which means it is already built into what properties and residents pay for delivery. The program simply puts that funding to work by paying for, or subsidizing, efficiency upgrades that reduce load on the grid.

That funding model is why a qualifying community can often receive equipment and installation at little or no cost. It is not a promotion or a giveaway - it is a regulated program the property already contributes to through its rates. Each utility publishes its own list of eligible measures, incentive structures, and participation rules, and it updates them by program year. Budgets are finite and can be committed before a program year ends, which is why eligibility and incentive levels are always confirmed against the current year rather than assumed from a prior one. The mechanics differ in the details between Oncor and AEP Texas, but the underlying framework - regulator-mandated, rate-funded, savings-driven - is the same on both sides of the map.

Side-by-side comparison

Here is how the two programs line up on the points that matter most when you are deciding how to move forward. The specifics of eligible measures and participation change by program year, so treat this as a general orientation rather than a rate sheet - confirm the current details for your territory before committing to a scope.

Read across the rows and the pattern is clear: the two programs are more alike than different in structure. Both are regulated, rate-funded, and delivered through approved service providers; both cover a similar family of measures led by smart thermostats and HVAC. The most consequential difference is simply which one your property is allowed to use, and that is decided entirely by territory. For a deeper look at the Oncor side specifically, see our guide to Oncor multifamily incentives in 2026.

Smart thermostat programs in both territories

Smart thermostats are the most common starting point in both the Oncor and AEP Texas multifamily programs, and for good reason. They deliver measurable heating and cooling savings, residents genuinely like them, and they can be installed across occupied units quickly with minimal disruption. Because thermostats are a high-volume, well-understood measure, the utilities have built multifamily-focused offerings around them on both sides of the map.

The eligible equipment in both territories is typically an ENERGY STAR certified smart thermostat - the certification is the standard the programs point to when defining a qualifying unit. In many multifamily cases the thermostat is provided and installed directly for the qualifying community rather than paid back as a cash rebate, so the property is not fronting equipment cost. Exact eligibility rules, model requirements, and how the incentive is structured differ by utility and by program year, but the shape of the offer - certified equipment, professionally installed, documented per unit - is consistent across Oncor and AEP Texas.

The appeal for ownership goes beyond the utility incentive. A modern thermostat gives residents easier, more precise control over heating and cooling, which tends to reduce comfort complaints and after-hours maintenance calls. For the property, standardized equipment across units is simpler to support than a patchwork of aging, mismatched thermostats. Programs commonly also allow for spare or common-area units so the maintenance team is not left short, and installation across occupied apartments can be sequenced to keep disruption to residents low. None of this requires the property to front equipment cost when the community qualifies, which is why the thermostat track is usually the most straightforward first project in either territory.

Our smart thermostat program handles the thermostat track in both territories, from confirming the certified equipment the program requires to installing across occupied units and documenting each one for closeout. If HVAC equipment is also aging out, thermostats often pair naturally with an HVAC retrofit, since both measures live under the same utility program.

How a community participates

Whichever territory you are in, the path to participating in the program follows the same practical steps. The utility runs the program, but it does not knock on 300 apartment doors - that coordination is carried by an approved service provider working on the community's behalf.

• Verify the delivery territory.Confirm whether the property's address is served by Oncor or AEP Texas. This is a quick address check, and it settles which program, rules, and eligible measures apply.
• Confirm eligibility for the current program year.Eligibility typically depends on practical facts - existing (not new-construction) multifamily, individually metered units, and the right equipment and heating configuration - checked against this year's program rules and available budget.
• Enroll the project and schedule. The service provider registers the project with the utility, prepares resident notices, and coordinates timing with onsite staff so installation does not fall on the property team.
• Install and document. The crew completes the work unit by unit, capturing the photos and records the program requires for each installation.
• Close out with the utility. The provider assembles and submits the documentation package the program needs to process the incentive.

The reason to use a service provider is straightforward: qualification paperwork, resident scheduling, occupied-unit installation, and program documentation are exactly where projects succeed or stall. Our utility incentive management service exists to carry that load in both territories, and our How It Works page walks through each step on the property in detail. Many companies can sell an idea; fewer can coordinate thousands of occupied-unit upgrades cleanly.

In practice, resident communication is what makes or breaks an occupied-unit program in either territory. Residents who receive clear, advance notice of what is happening, when, and why are far more likely to provide access on the first attempt - which keeps the schedule tight and the closeout documentation complete. An onsite team that is not left personally coordinating installers can keep running the property. Good documentation matters just as much: the utility processes the incentive based on the per-unit records the provider submits, so photos and paperwork have to be captured correctly the first time. These are unglamorous details, but they are precisely where the value of a program is either realized or lost.

Which program is right for my property?

This is the question owners ask most often, and the honest answer is that it is not a choice. You do not select between the Oncor and AEP Texas programs the way you would compare two vendors. The correct program is determined entirely by the utility that delivers electricity to your property's address. If Oncor delivers your power, the Oncor program applies; if AEP Texas does, the AEP Texas program applies. There is no cross-enrollment and no way to shop between them.

That is actually good news, because it removes a decision. Once the territory is confirmed, the rest is coordination: check current-year eligibility, enroll, install, and document. The variable that genuinely affects your outcome is not which program you pick - it is how well the project is run. A provider that verifies the territory correctly, confirms eligibility against the current program year, communicates clearly with residents, and delivers clean documentation is what turns program eligibility into completed, incentive-backed upgrades.

For owners and management companies with communities in more than one region, the answer is often “both.” A portfolio can have some properties under Oncor and others under AEP Texas at the same time, each participating in its own territory's program in parallel. That does not mean two separate headaches - it means one partner running the same process against two sets of program rules, verifying each property against the correct utility and keeping the paperwork straight for each. The territory question is answered property by property; the coordination stays consistent across the portfolio.

If you are not sure which territory your community falls in, that is the right first question - and an easy one to answer. Request a property review and we will confirm whether you are in Oncor or AEP Texas territory, check your eligibility for the current program year, and tell you the right starting point. No guesswork, and nothing to commit to before the territory and eligibility are verified.