Houston Business Electricity Rates

Houston is the deepest retail electricity market in the United States. Dozens of retail electric providers compete for commercial load inside CenterPoint's service territory, quotes can be refreshed daily, and the spread between the best and worst offer on the same building can exceed 25%. That competition is the opportunity — and the reason so many Houston businesses leave money on the table. When every provider quotes a single blended number, the natural instinct is to pick the lowest one and move on. That instinct is what suppliers price against.

This guide breaks a Houston commercial electricity bill into its real components, explains which ones are actually negotiable, and lays out the levers that move a Houston business's all-in cost per kWh.

Who You Actually Buy Electricity From in Houston

Texas separated the parts of the electricity business in 2002, and Houston has three distinct players on your bill whether you notice them or not:

• CenterPoint Energy Houston Electric is your TDU — the transmission and distribution utility. CenterPoint owns the poles and wires, reads your meter, and restores power after a storm. Its charges are set by the Public Utility Commission of Texas, are identical for every customer on the same rate class, and are not negotiable. You cannot shop away from CenterPoint.
• Your retail electric provider (REP) sells you the electricity itself. This is the only part you shop. REPs buy power in the ERCOT wholesale market, add margin and risk premium, and sell it to you at a contracted price.
• ERCOT operates the grid and runs the wholesale market. You never contract with ERCOT, but its prices — and its scarcity events — set the floor under everything your REP quotes.

The practical consequence: when a Houston business says "our rate went up," it is often the pass-through delivery component that moved, not the supply rate they negotiated. Knowing which is which is the difference between renegotiating something you can change and complaining about something you cannot.

What Makes Up a Houston Commercial Electric Bill

A typical Houston commercial bill has four cost blocks:

• Energy. The commodity itself, priced per kWh. This is where the ERCOT forward curve, your load shape, and your contract term all show up. On a Houston commercial account, energy is usually 50–65% of the all-in cost.
• TDU delivery charges. CenterPoint's regulated charges, billed as a mix of per-kWh and per-kW-of-demand components depending on your rate class. These change when the PUCT approves a rate case or a rider — typically twice a year — and pass straight through.
• Transmission cost allocation (4CP). For larger interval-metered accounts, a significant share of transmission cost is allocated based on your demand during four specific 15-minute intervals — the monthly system peaks in June, July, August, and September. This is the single most controllable large cost in Houston, and we cover it below.
• Ancillary services, ERCOT administrative fees, and riders. Small individually, meaningful in aggregate, and the place where "fixed" contracts most often turn out not to be fixed.

If you want a line-by-line walkthrough of a commercial statement, our guide to reading a commercial electric bill maps each charge to what causes it.

4CP: The Houston Cost Almost Nobody Manages

ERCOT allocates transmission costs to large commercial and industrial customers using the Four Coincident Peak method. Your transmission bill for the following year is set by your average demand during the single 15-minute interval in each summer month when the entire ERCOT grid hits its peak. Four intervals. One hour of metered demand, total, determines twelve months of transmission cost.

For a Houston facility with meaningful load, this is not a rounding error — 4CP charges can run into six figures annually for a large industrial site. And unlike the commodity price, it is almost entirely within your control. If you can curtail, shift, or self-generate during those four peak intervals, you permanently lower next year's transmission bill without changing a thing about your supply contract.

The catch is that nobody tells you in advance which interval will be the peak. Managing 4CP means watching ERCOT load forecasts on hot afternoons in June through September and being able to act on a few hours' notice — which is exactly the kind of thing a facility gets wrong when it is nobody's specific job. This is the same logic behind peak load management programs, and it is the highest-return energy project most large Houston facilities have never run.

Houston-Specific Load Profiles That Change Your Price

REPs do not price a building. They price a shape — the hour-by-hour pattern of when you use power. Houston's dominant commercial sectors each have a shape that suppliers treat very differently:

• Petrochemical and refining along the Ship Channel. Flat, high-load-factor, 24/7 consumption. This is the most attractive shape in ERCOT, and it should command the tightest supplier margins in the market. If a Ship Channel plant is being quoted the same margin as a strip center, something is wrong.
• Cold storage and food distribution. Heavy, temperature-driven load that peaks exactly when ERCOT peaks — the worst possible correlation for both commodity cost and 4CP. These sites benefit disproportionately from thermal pre-cooling strategies. See our breakdown of cold storage energy costs.
• Medical Center and healthcare campuses. High load factor, non-curtailable, extremely reliability-sensitive. Price stability usually matters more than the last tenth of a cent, which changes the right contract structure entirely.
• Warehouse and logistics along the Beltway and I-10. Lower load factor, lighting- and HVAC-driven, often with significant demand spikes from dock equipment. These accounts are frequently on the wrong CenterPoint rate class.
• Data centers. Near-perfect load factor, growing fast, and increasingly the marginal buyer setting the price in ERCOT. See Texas data center energy costs.

What Houston Businesses Get Wrong

Five patterns account for most of the overpayment we find on Houston accounts:

• Comparing all-in numbers instead of contract terms. A 6.9¢ quote with pass-through ancillary services, a bandwidth clause, and a material change provision is not cheaper than a 7.2¢ quote with everything fixed. It is a different product with a different risk profile, and the difference usually appears in month seven.
• Renewing on the incumbent's renewal letter. Renewal offers from an existing REP are priced on the assumption that you will not shop. In Houston, where switching is genuinely frictionless, that assumption is expensive.
• Locking a long term at the wrong moment. ERCOT forward curves swing hard around summer weather and legislative sessions. Term length should be a decision about the curve, not a default. Our guide on when to lock in energy rates covers the timing logic.
• Ignoring the TDU rate class. A Houston facility whose load has changed since the last review may be on a CenterPoint rate schedule that no longer fits. Reclassification can be worth more than a supply renegotiation, and it costs nothing but the analysis. That is what tariff optimization is for.
• Treating multi-site portfolios as separate accounts. A Houston company with fifteen locations across CenterPoint, Oncor, and AEP territory has real aggregation leverage — and almost never uses it. See multi-site energy procurement.

How to Lower Your Houston Electricity Cost

In rough order of return per hour invested:

• Run a real competitive process before your renewal window. Not three quotes — a structured solicitation with identical terms across every REP, so the numbers are actually comparable. Start 6–12 months out.
• Attack 4CP if you have interval metering. Even partial curtailment during the four peak intervals produces savings that recur every year.
• Audit twelve months of bills. Meter multipliers, rate class, and TDU rider application are wrong often enough that a bill audit pays for itself on a meaningful share of Houston accounts, and refunds are retroactive.
• Match contract structure to your risk tolerance. Fully fixed, block and index, or index — each is right for a different business. The wrong structure costs more than the wrong supplier.
• Check whether demand response fits. ERCOT pays for curtailable load. If you have processes that can move, that is revenue, not just savings — see demand response.

Frequently Asked Questions

Can any Houston business choose its electricity provider?

Almost all of them. If you are served by CenterPoint Energy Houston Electric, you have full retail choice. The exceptions in the greater Houston area are customers of municipally owned utilities and electric cooperatives, which are not required to open to competition — so a facility just outside the CenterPoint footprint may have no choice at all.

What is a good commercial electricity rate in Houston?

There is no single number, because the right benchmark depends on your load factor, term, credit, and the date you price. A flat 24/7 industrial load and a single-shift warehouse of the same annual volume should not receive the same rate, and a quote is only meaningful on the day it is given. The useful question is not "is 7 cents good" but "is 7 cents good for this load shape, on this day, against what every other REP would offer for the same terms."

Does switching REPs interrupt my power?

No. CenterPoint continues to deliver the electricity regardless of who you buy from. A switch is a back-office change at ERCOT; nothing physical happens at your building and there is no outage.

How far ahead should a Houston business start its renewal?

Six to twelve months before expiration. That window gives you the ability to price into favorable market moves rather than accepting whatever the curve looks like the week your contract ends — which is when suppliers know you have no leverage.

What happens if my contract expires and I do nothing?

You roll onto your REP's month-to-month holdover rate, which is typically the most expensive electricity you will ever buy — often multiples of a contracted rate. Holdover rates are one of the largest sources of unnecessary commercial energy spend in Texas.