Houston Commercial Electricity: A CenterPoint-Territory Buyer's Guide

Say a Houston warehouse uses 42,000 kWh a month, for example. At a hypothetical rate of 9.4 cents/kWh, that load would run $3,948 a month in energy charges. At a hypothetical lower rate of 7.1 cents/kWh, purely for comparison, the same load would run $2,982. That $966 monthly gap works out to $11,592 a year in this illustration, and that's before CenterPoint's delivery charges and any demand fees show up on the same bill. Example numbers to show the math, not a live quote.

Houston sits inside ERCOT's deregulated market, which means the company that delivers your electricity and the company that sells it to you are two different businesses. CenterPoint Energy owns the poles, wires, and meters across greater Houston, Harris County, and most of the surrounding suburbs. Katy, Pasadena, Sugar Land, Pearland, Baytown, Spring, The Woodlands, Humble, Missouri City, Galveston, and Bellaire all sit on CenterPoint's grid. A handful of pockets, League City, Texas City, and Alvin among them, sit on Texas-New Mexico Power's lines instead. Either way, the TDU doesn't change with your contract. Reliability, outage response, and line maintenance stay the same no matter which retail electricity provider you sign with. What changes is the price you pay per kWh, the contract term, and how demand charges get structured, and that's entirely up to you to shop.

Houston's humidity is the single biggest reason commercial HVAC systems here run harder than the same square footage in, say, Lubbock or Amarillo. Compressors don't just cool the air, they're pulling moisture out of it too, and that extra load shows up as higher peak demand, not just higher total kWh. That matters because most Houston commercial bills carry a demand charge on top of the energy charge, billed on the single highest 15-minute kW interval of your billing cycle. For energy-intensive operations, restaurants running walk-ins and hood exhaust fans, warehouses with dock-door HVAC, light manufacturers running motor loads, demand charges can make up a substantial share of the total monthly bill. Say a restaurant uses 20,000 kWh a month, for example: its demand charge could run nearly as large as its energy charge once you add up the peak kW pulled during a Saturday dinner rush. Example numbers to show the math, not a live quote. Larger accounts on interval data recorder (IDR) metering also feed into ERCOT's 4CP, the four coincident peaks tracked each June through September that set transmission cost allocation for the following year. If your Houston operation runs 24/7 or close to it, hotels, healthcare facilities, and manufacturing plants especially, that peak-season behavior has real cost consequences a year later.

We recommend Houston businesses start shopping 60 to 90 days before their current contract ends, not after the renewal letter shows up. Waiting for that letter puts you on the supplier's timeline instead of yours, and it's usually written to make the existing rate look better than it is. In most cases, a 12- to 24-month fixed contract is the right move for a Houston commercial account. It locks in a known energy rate through at least one full summer cooling season, which is when ERCOT prices and your own demand charges are both at their worst. Index or block-and-index pricing is worth a real look once you're above roughly 50,000 kWh/month with fairly steady, predictable usage. An oil-and-gas services operation or a large distribution center is a better fit for that structure than a seasonal retailer.

• Pull 12 months of usage and demand history by ESI ID before requesting quotes, most REPs and your current bill portal can generate this in minutes.
• Decide fixed versus index pricing based on your load shape, not on whichever option sounds cheaper this month.
• Bundle every ESI ID under one competitive bid if you run more than one Houston-area location, a second kitchen in Sugar Land or a warehouse in Pasadena included.
• Start the shopping process 60 to 90 days before your current term ends to keep negotiating leverage.
• Confirm any quoted rate is supply-only, then separately verify CenterPoint's delivery charges and the demand charge structure before you sign anything.