For most Texas businesses, the supply half of the electricity bill is a negotiated line item, not a fixed one.
Most owners know their labor cost to the dollar. They can name the vendor whose contract renews next quarter and the inventory line that ate the margin last spring. Ask about electricity, and you usually get a shrug and an approximate monthly figure.
Power gets paid, not managed. In most of Texas, that's a habit worth breaking, because the supply half of a commercial electricity bill is competitive. While Texas’s deregulated ERCOT grid offers a high-stakes case study, these procurement principles apply across competitive power markets globally. In these regions, businesses pick which retail provider sells them electricity, and they can change that pick when the contract allows. Meanwhile, demand keeps climbing.
No single business moves those numbers. What a business does control is narrower and far more useful: the plan it signs and how its equipment behaves on the hottest afternoon of the month.
Your Bill Has Two Halves, and You Only Shop for One
A commercial electricity bill splits into supply and delivery. Supply is what you buy from a retail provider at a contracted price per kilowatt-hour, and it's the piece competition applies to. Delivery covers the poles and wires owned by your local transmission and distribution utility; those charges are set through regulators and passed straight through to you no matter whose name sits on the supply contract. Switch providers and the delivery side keeps working exactly as before. Same wires, same crews on the outage call.
That split explains how a low advertised rate still produces an ugly bill. Teaser pricing quotes the supply component at a usage level that may not resemble yours, then leaves out the regulated delivery charges and the monthly base fee. It also says nothing about what the plan does the day the term ends, which is where a lot of money quietly changes hands.
Providers like Energy Texas sell into that competitive market with commercial lineups built around fixed-rate plans in 12, 24, and 36-month terms, stating terms and pricing up front instead of forcing owners to reconstruct them from a bill three months later. Any honest comparison of business electricity costs Texas happens at the total-bill level: pull last July's kilowatt-hour total and its peak demand reading, run both through the offered rate plus your current delivery charges, and look at what that plan would have cost you in your worst month rather than your average one.
Demand Charges Are the Line Item Owners Miss
Larger commercial accounts pay for two different things: how much electricity they used, and how fast they used it at their single worst moment. One bad spike sets the number.
Picture a restaurant firing every piece of heavy kitchen equipment at once before a lunch rush. Or a warehouse charging forklifts while the cooling system fights a baking loading dock. Neither shows up as unusual monthly consumption, and both can move the demand line for the entire cycle. An office tower does the same thing when its HVAC surges after a hot, quiet morning.
Flattening a Peak Costs Almost Nothing
Pre-cooling is the standard move. Pull the building down early, before outside temperatures climb, then let it drift through the expensive stretch of the afternoon. Discretionary work can shift too: if a machine shop can run its heaviest cycle at 9 p.m., it should. Programmable schedules stop empty conference rooms and vacant warehouse bays from being cooled all day, and staggering the startup of large motors keeps two big loads out of the same 15-minute window. Preventive HVAC service and a look at insulation and weather seals cut how much conditioned air leaks out while all of that is running.
A facility whose peak hour lands in that afternoon stretch is buying power at the tightest point of the day. In Texas, managing these peaks offers an even larger return through Four Coincident Peak (4CP) management: a business's grid transmission charges for the entire following year are calculated during four 15-minute grid peaks between June and September. Curtaining load during these windows permanently drops delivery fees. Furthermore, capital upgrades required to automate this curtailment—such as smart building controls—can often be offset using Commercial PACE (C-PACE) financing, local utility rebates, or federal tax deductions like Section 179D.
Start With Twelve Months of Bills
One invoice tells you almost nothing. A full year shows seasonality and, more importantly, surfaces the dates that constrain your options. It also answers whether last August was a pattern or an accident. Most of this work is clerical, and it's the part almost nobody finishes before taking a cold call from a broker.
Work through the stack in order:
- Gather 12 months of electricity bills for every metered location.
- Calculate your all-in cost per kilowatt-hour for each month, supply and delivery together.
- Check whether a demand charge appears at all, and what it hits in your peak month.
- Separate supply charges from transmission and delivery charges.
- Flag the base fees and regulatory riders, then read the early termination clause.
- Note the contract end date and the renewal notice window that goes with it.
- Mark your highest-usage months and what was running during them.
The contract end date is usually the most valuable thing you find. Everything else on that list tells you what you're buying; the date tells you when you can do something about it.
Fixed, Variable, and the Renewal Nobody Calendars
A fixed-rate plan holds your supply price for the term, which is why it appeals to anyone who has to defend a budget line twelve months out. A variable plan moves with market conditions and provider terms. It can suit a business that wants short-term flexibility and can absorb a rough quarter, and it can hurt when a heat wave lands in the middle of a billing cycle and wholesale prices climb with it. Larger corporate accounts often use hybrid options like Block & Index plans—fixing a baseline percentage of load while floating the balance on index prices. However, CFOs must scrutinize bandwidth or "swing" clauses in these fixed-rate contracts, which impose financial penalties if usage deviates by more than 10% to 20% from historical baselines. For organizations with corporate ESG targets, these negotiations should also define how Renewable Energy Certificates (RECs) or green tariffs are integrated to satisfy Scope 2 compliance.
The larger risk sits at the end of the term. Contracts that lapse without action often roll into a month-to-month holdover price, and for a business that signed in July, that rollover arrives in July. Shopping late narrows the field as well. With two weeks left, you take what's available rather than what fits.
Treat market figures as reference points, not quotes. What you're offered depends on load profile, credit, term length, and where the meter sits.
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What Switching Involves
Nothing physical changes. The utility that owns the wires still delivers the power and still answers the outage line, and the meter stays where it is. The rest is paperwork: your new provider needs the account identifiers off your bill, usually asks for historical usage so it can price your load properly, and runs credit on the business. The change then takes effect at a scheduled meter read.
Timing is what makes it worthwhile. Signing while months remain on your current agreement can trigger an early termination fee big enough to eat the savings, so the productive window opens once you're inside the renewal notice period with a year of data in hand.
When the bids arrive, read past the price. Ask in writing what happens at expiration. Pass-through charges should be itemized, not folded invisibly into the quoted rate. Find out how demand is billed, whether the plan assumes a usage shape anything like yours, and if the provider offers revenue-generating Demand Response programs that pay your business for shedding non-critical load during grid stress events. And find out who picks up the phone in September when a bill looks wrong.
Put It on the Calendar
Quarterly is enough. Fifteen minutes with the last three bills and the contract calendar will catch a drift in cost per kilowatt-hour long before it compounds into a year of overpaying, and it moves the renewal conversation out of the panic window.
Electricity feels fixed for one reason: the invoice shows up whether anyone reviews it or not. Owners who treat the supply half like any other negotiated contract end up with a number they can forecast and a renewal date they picked themselves.
