Texas Office Electricity Plans: How to Compare Commercial Rates
Shopping for power for a Texas office is not the same as picking a residential plan off a rate board. Your bill mixes energy you can shop for with delivery charges you cannot, and the best offer depends on how your building actually uses electricity—not just the headline cents-per-kilowatt-hour figure. This guide walks through how commercial choice works in deregulated Texas, what drives office costs, how rate structures differ, and how to compare offers without getting blindsided by demand charges, fees, or auto-renewals.
Why Texas office electricity shopping works differently
In most of the United States, a single utility sells you generation and delivery as a bundled product. In competitive parts of Texas, those roles split. A retail electric provider (REP) sells the energy and bills you. A transmission and distribution utility (TDU)—also called a wires company—owns the poles, wires, and meters, restores outages, and charges regulated delivery fees that your REP passes through. ¹ puts it plainly: REPs market and bill electricity; TDSPs/TDUs deliver and meter it.
That split matters for offices because two neighbors can have different energy rates while paying the same regulated delivery tariff for the same wires company. Switching REPs does not change who maintains the lines or who you call when the lights go out. ² states that reliability stays with the local wires company regardless of which REP you pick, and outages should be reported to that TDU—not your retail supplier.
The wholesale and retail plumbing sits inside the ERCOT grid. ³ that it manages power for more than 27 million Texas customers—about 90 percent of the state’s electric load—schedules a grid with more than 55,000 miles of transmission lines and more than 1,460 generation units, and administers retail switching for about 8 million premises in competitive areas. For an office manager, the practical takeaway is simple: you can shop the energy portion of the bill in competitive ERCOT territories, but you cannot shop the wires.
Commercial shopping is also more negotiated than residential browsing. ⁴ says shopping for business service often resembles buying wholesale materials or a large equipment order—quotes, load data, and terms—rather than clicking a single residential plan. Small suites may still see fixed offers; mid-size and large offices more often get custom pricing. Brokers and comparison services that work across deregulated markets such as Texas, Ohio, and Maryland, including ⁵, exist to surface licensed-supplier options side by side, but they do not replace reading your own contract.
First check: deregulated choice vs. regulated service
Not every Texas office can switch. ² that a 1999 state law opened retail choice in most of Texas to encourage competition, but municipalities and cooperatives were not required to deregulate. If your building sits in a municipally owned utility or co-op territory, you typically stay with that utility’s tariff schedule. Entering your ZIP on ⁶ is the fastest way to see whether competitive plans appear for your area.
Where choice exists, staying put is still a decision. ⁴ notes that if a customer never selected a new provider after competition began in 2002, service may still sit with the affiliate REP of the original utility. You can keep that relationship or shop elsewhere; you are not forced to switch, but you should know whether you are on a competitive fixed term, a month-to-month product, or a default-style arrangement that may not be priced for your load.
Outside Texas, the same office-shopping logic applies in other choice markets—⁵—while fully regulated states leave you comparing utility rate schedules, demand riders, and efficiency programs instead of competing REPs. Either way, the comparison starts with your interval usage and peak demand—not a national average alone. If you manage offices in both competitive and regulated cities, keep separate playbooks: one for REP bidding, one for tariff optimization and demand control.
What your commercial office bill is really made of
A commercial bill is usually more than “kWh × advertised rate.” Broadly, you pay for (1) energy supply from your REP, (2) delivery and metering from your TDU, and (3) taxes, fees, and plan-specific charges. ⁷ notes that retail prices reflect generation, transmission, and distribution costs, and that fuels—especially natural gas—weather-driven demand, plant costs, and regulations all move prices. Retail prices are usually highest for residential and commercial customers because it costs more to distribute power to them than to large industrial loads served at higher voltages. EIA also notes that prices are usually highest in summer when demand rises and more expensive generation is needed.
Texas commercial averages sit well below many peer states. According to EIA’s ⁸, Texas commercial customers paid an average of 8.55 cents per kWh in 2024, down from 8.82 cents in 2023. For context, the U.S. commercial average in that same table was 12.75 cents per kWh in 2024. ⁷ also reports that the 2025 U.S. annual average retail price was about 13.63¢/kWh overall, with commercial customers averaging 13.41¢/kWh nationally. Those statewide and national averages are useful benchmarks—not quotes for your suite.
A quick illustration helps. At Texas’s 2024 commercial average of 8.55¢/kWh from ⁸, 4,000 kWh of energy would imply about $342 before taxes and before recognizing that delivery and demand can move the all-in number substantially. The same kilowatt-hours at the 2024 U.S. commercial average of 12.75¢/kWh would imply about $510. Your real bill will not match either figure exactly, but the gap shows why Texas offices often start from a relatively competitive baseline—and why bad contract terms or unmanaged peaks can still erase that advantage.
Delivery charges deserve special attention. In Oncor territory, for example, ¹ commonly splits at a 10 kW threshold: Secondary Service ≤10 kW versus Secondary Service >10 kW. For larger accounts, Oncor records demand as the highest 15-minute average use in the billing month (kW). Billing demand can also reflect a demand ratchet—often the higher of current non-coincident peak demand or 80% of the highest monthly peak in the prior 11 months, depending on the tariff. That is why a short spike from simultaneous HVAC startup, elevator banks, and kitchen equipment can raise delivery costs for months after the event.
Four major TDSPs serve competitive Texas zones: Oncor, CenterPoint Energy Houston Electric, Texas-New Mexico Power, and AEP Texas, according to ¹. Your ZIP and ESIID (the premise identifier on your bill) determine which tariff applies. Shopping a “cheap” energy rate while ignoring demand-driven delivery can still leave you with a painful total bill.
Plan fees pile on. ² warns that many plans include a minimum usage charge if you fall below a threshold—commonly illustrated at less than 500 or 1,000 kWh in a billing period. Small offices with mild shoulder-season months are especially exposed. Always read the Electricity Facts Label (EFL) for fees, credits, and term length before comparing “average price” figures.
Rate structures that fit—or fight—office load profiles
Offices tend to have a daytime-heavy load shape: lighting, HVAC, IT equipment, elevators, and common areas peak during business hours and drop nights and weekends, unless tenants run extended or 24/7 operations. ⁹ describes that pattern and notes HVAC as a primary cost driver in Texas offices, especially in summer, when cooling loads can climb sharply.
Common commercial product types you will encounter:
Fixed-rate energy. You lock a supply price (¢/kWh) for a set contract term. Delivery still floats with TDU tariffs. Fixed products suit budget predictability when your usage is steady and you want summer peak risk hedged into the rate. For many small professional suites, this is the default shopping target.
Variable or indexed products. Prices can move with market indices or supplier pricing. They may look cheap in soft markets and expensive during heat waves or gas spikes. ⁷ that wholesale costs change minute by minute and that summer demand often pushes higher-cost generation onto the system—useful context if you are considering products that track wholesale conditions more closely. Offices with thin cash reserves usually should treat open-ended variable exposure as a risk product, not a default.
Block and index / hybrid structures. Larger commercial and industrial accounts sometimes buy a fixed block of energy and settle the rest on an index, or use other hedge blends. ⁵ frames small-business offices as often fitting straightforward fixed-rate plans, while larger commercial and industrial sites more often need custom procurement, block pricing, or hedging strategies.
Demand-aware design. Even if your REP quote is purely energy-based, your TDU bill may still charge for peak kW. Load management—staggering equipment starts, maintaining HVAC setpoints, fixing simultaneous plug-load spikes—can cut billed demand without changing your REP. In territories that use ratchets, as described in ¹, preventing one bad 15-minute interval can protect several future months.
There is no universal “best” structure. A medical office with evening hours, a Class A tower with weekend cleaning and data closets, and a 2,000-square-foot professional suite will not optimize the same way. Match product risk to cash-flow tolerance and to how spiky your 15-minute demand intervals look.
Size up your office load before you shop
You cannot compare commercial rates honestly without usage data. Pull 12 months of bills if you have them. Better yet, export interval data from Smart Meter Texas (referenced in ¹) so you can see peak kW, not just monthly kWh. Look for the month with the highest demand, not only the month with the highest kilowatt-hours; those are not always the same.
As rough scale checks—not quotes—⁹ that a small office suite often uses about 2,000 to 6,000 kWh per month, while a mid-size office building can use 20,000 to 80,000 kWh or more, with summer costs that can rise sharply without a fixed-rate hedge. WattKarma also notes that small Texas offices often land in a few-hundred-dollar monthly bill range while mid-size buildings can run into the thousands, depending on size and HVAC intensity. Those ranges help you sanity-check broker quotes and identify whether you are a small-commercial or mid-commercial prospect.
Benchmark intensity with ENERGY STAR tools. ¹⁰ as annual energy divided by floor area. For U.S. offices, the national median site EUI listed in ENERGY STAR’s table is 52.9 kBtu per square foot per year (source EUI 116.4). If your office is far above peer medians after adjusting for hours and climate, rate shopping alone will not fix the problem—efficiency will.
The scale of waste is large industry-wide. The ¹¹ cites EPA in stating that, on average, 30% of energy used in commercial buildings is wasted. DOE also notes that commercial buildings account for a large share of U.S. electricity use and substantial annual energy expenditures. For an office owner, that is an argument to pair procurement with lighting upgrades, HVAC controls, and schedule tuning—not to treat the REP rate as the only lever.
When requesting quotes, give suppliers: recent monthly kWh, peak kW (or interval files), service address/ESIID, contract end date, and whether the account is owner-paid common area, tenant suite, or whole-building. Incomplete load packages produce incomplete prices.
How to compare commercial offers apples-to-apples
Start with official directories and standardized disclosures. ⁶ is the Public Utility Commission of Texas’s official, unbiased shopping site where providers can list offers for free. For non-residential service, review the ¹², which lists certified providers and which segments they serve (small, medium, large commercial, industrial). Confirm any salesperson’s company against certified listings before sharing account numbers.
Insist on an Electricity Facts Label and Terms of Service. ² explains that every plan must have an EFL with standardized rate, fee, and contract information so customers can compare offers. The Terms of Service is the contract. For business deals that are negotiated rather than posted, ask the REP to show the same fee and term clarity you would expect on an EFL—early termination fees, pass-throughs, bill-credit conditions, and what happens at renewal.
Compare total estimated cost at your usage, not the teaser ¢/kWh. Model at least three months of your real history: a mild month, an average month, and a summer peak month. Include TDU delivery estimates and any minimum-usage fees. A plan that looks cheapest at 5,000 kWh can lose if your suite regularly dips near a minimum threshold or if demand charges dominate.
Watch for aggregation options. ⁴ notes that aggregators can represent groups of customers to buy in bulk. Multi-location office portfolios sometimes use that path—or a broker—to consolidate procurement. If you use a broker, clarify how they are paid and whether you still receive full contract documents. ⁹ a ZIP-based comparison flow for office accounts in deregulated markets and states that switching suppliers does not interrupt delivery over the utility’s lines.
Finally, remember that advertised residential Power to Choose offers are not a substitute for commercial pricing. Use residential boards only as a rough market temperature check; price your ESIID with commercial products sized to your demand class.
Switching, renewals, and contract traps
Switching mechanics are designed to avoid downtime. According to ², after you sign with a new company, ERCOT mails a confirmation and you generally have three business days to change your mind; the switch then proceeds automatically, typically within seven business days, with no lapse in service. You usually do not need to call your old REP to leave—though you remain responsible for early termination penalties if you break a term contract. There is no switching fee unless you request a special meter read outside the normal cycle.
Read expiration notices carefully. For contracts with three or more months remaining, ² states your company must notify you in writing at least 30 days (or one billing cycle) and no more than 60 days (or two billing cycles) before the end of the term. If you do nothing, you can be moved to a month-to-month variable product. Calendar the notice window the day you sign. Offices that miss this window often discover the problem on a summer bill.
Protect against slamming and cramming. ² as switching service without permission and cramming as adding unauthorized charges. Do not hand out account numbers casually. If something looks wrong, contact the REP first; unresolved disputes can go to the PUC consumer hotline at 1-888-782-8477.
If a REP exits the market, you should not lose power. ² says providers usually give about 30 days’ notice, and sudden exits route customers to the Provider of Last Resort until you choose a new REP. Keep a short list of backup REPs from the ¹² so you are not improvising under a deadline.
Cut kilowatts—and decide if green supply is worth it
Procurement sets the price of each kilowatt-hour; efficiency reduces how many you buy. Because ¹¹ that roughly 30% of commercial building energy is wasted on average, the highest-ROI “rate” for many offices is eliminating after-hours lighting, fixing economizer and schedule problems, and right-sizing setpoints before locking a multi-year supply contract.
Use ENERGY STAR Portfolio Manager to track EUI against the ¹⁰. Pair that with summer demand reviews so you are not buying a fixed energy rate while a preventable 15-minute spike inflates TDU demand charges described by ¹.
Renewable content is a separate choice. Many EFLs list the percentage of renewable energy in the product, as noted in ². A higher renewable percentage can matter for ESG reporting or tenant preferences; it may or may not cost more than a standard fixed product depending on market conditions. Treat green attributes as a scored feature next to price, term, and fees—not as a substitute for reading the termination clause.
A practical decision checklist for Texas offices
- Confirm choice eligibility with your ZIP on ⁶. If you are in a muni or co-op, stop shopping REPs and review your utility’s commercial tariff instead.
- Identify your TDU and rate class; note whether you sit above or below key demand thresholds such as Oncor’s ¹.
- Export 12 months of kWh and peak kW. Flag summer peaks and any ratchet exposure.
- Benchmark EUI against ¹⁰ and schedule obvious efficiency fixes before or alongside contracting.
- Request commercial quotes from certified REPs listed in the ¹²—or work through a transparent broker—using your real load file.
- Compare total modeled cost (energy + delivery + fees) on mild, average, and peak months. Reject any offer lacking clear early-termination and renewal terms.
- Calendar the contract end date and the ² so you never default into an unwanted month-to-month rate.
- After enrollment, verify the first bill’s line items against the contract and report outages to the TDU, not the REP.
Texas’s commercial market can reward attentive office buyers: statewide average commercial prices remain relatively low compared with the national commercial average in ⁸, and competitive choice lets you align product risk with your building’s daytime load shape. The offices that win are the ones that treat electricity like any other major operating contract—measured, bid with real data, and renewed on purpose.