Fixed vs. Variable Energy Contracts: Which Is Right for Your Houston Business?
When it comes time to sign a commercial electricity contract, one choice shapes everything that follows: do you lock in a fixed rate, or ride a variable rate that moves with the market? For a Houston business owner trying to control costs, the fixed vs. variable energy contracts decision is the single biggest lever you have. Pick the wrong one for your situation and you could either overpay for peace of mind or get blindsided by a summer price spike. The good news is that once you understand how each one works, the right answer for your business usually becomes clear.
What a Fixed-Rate Contract Actually Locks In
A fixed-rate contract sets your price per kilowatt-hour for the entire length of the term, whether that is 12, 24, or 36 months. The energy portion of your rate does not move, no matter what happens on the ERCOT grid or how brutal the Texas summer gets. If wholesale prices double during an August heat wave, your locked rate stays exactly where you signed it.
It is worth being precise about what is fixed and what is not. The energy charge is fixed. Your delivery charge, the TDSP fee from CenterPoint Energy in most of the Houston area, is set by regulators and can still change separately. Taxes and fees can move too. So a fixed contract gives you certainty on the largest and most volatile piece of your bill, which is usually what matters most for budgeting.
How a Variable Rate Behaves
A variable or index rate floats. Your price each month is tied to the wholesale market, so it can drop when supply is plentiful and demand is low, and it can climb fast when the grid is tight. In the mild spring and fall months, a variable rate can look attractive. In the heat of a Houston July, it can punish you.
Variable rates give you flexibility, since they usually do not lock you into a long term, and they let you benefit if market prices fall. The tradeoff is exposure. You are carrying the market risk yourself, and that risk shows up exactly when your air conditioning load and your costs are both highest. For most commercial businesses that need predictable expenses, that volatility is hard to plan around.
A Houston Example: Weighing Certainty Against Risk
Say your business uses around 200,000 kilowatt-hours a year and you are deciding between a 24-month fixed rate and a variable plan. With the fixed rate, you know your energy cost for the next two years, which makes budgeting simple and protects you through two Texas summers. With the variable plan, you might save a little during cool months, but you accept that a hot, high-demand stretch could send your per-kilowatt-hour cost well above the fixed option for a while.
The question is not which rate is cheaper on the day you sign. It is which structure fits how your business handles risk. A company with tight margins and a fixed budget usually values certainty. A business with flexible operations and an appetite for risk might tolerate the swings. Neither answer is wrong, but they are very different bets.
How to Decide What Fits Your Business
A few questions help point you toward the right structure. How predictable does your monthly budget need to be, and could a sudden cost spike cause real strain? How long do you want to commit, given that fixed rates reward a longer term with more certainty? Where are we in the seasonal cycle, since locking in outside peak summer often means better fixed pricing? And how comfortable are you carrying market risk yourself versus handing it to the provider through a fixed rate? Your honest answers usually make the choice obvious.
A Simple Next Step
The fixed vs. variable question does not have a one-size answer, and the right call depends on your usage, your budget, and your tolerance for risk. That is what we help Houston businesses sort out every day at Excelsior Energy. If you want a clear comparison of fixed and variable options based on your actual usage, we are happy to do a free bill review. Call us at 713-898-3164 and we will walk through your numbers, no pressure and no jargon.