Commercial Electricity for Medical Offices in Texas

Energy strategy for Texas medical offices

Medical offices sit between standard office buildings and specialized healthcare facilities. A primary care clinic looks a lot like a typical office on paper. An imaging center or surgical suite looks nothing like one. The equipment runs harder, the HVAC runs tighter, and the reliability tolerance is lower than almost any other small-footprint commercial category.

This guide covers how medical office load actually behaves across the day and the week, how multi-location practices and specialty groups use portfolio leverage, where the common procurement mistakes happen, and how Electric Decisions runs a documented procurement built around the realities of a working practice. Built for solo practitioners, physician groups, specialty clinics, and healthcare management companies across the Texas Medical Center in Houston, the Dallas medical corridor, and the suburban practice clusters around major metros.

How medical offices use electricity

Medical office load varies more by specialty than by square footage. The same space can draw very different power depending on what is in it.

Primary care and general practice load profile looks like a typical office: HVAC and lighting dominate, with a modest IT and small-equipment load. Load factor sits in a moderate range with clean weekday peaks matching clinical hours.

Specialty practices (dermatology, GI, cardiology, orthopedics) add procedure room HVAC, more aggressive air exchange rates, and specialty equipment. Load factor can move higher as more equipment runs continuously.

Imaging centers (MRI, CT, X-ray, ultrasound) are a different category entirely. MRI machines pull continuous power to maintain superconducting magnet cooling, and the imaging suite requires strict temperature and humidity control. A 1.5T MRI alone draws continuously plus demand spikes during scans. CT and X-ray produce short, intense demand spikes rather than continuous draw. Load factor for imaging centers typically runs higher than general practices.

Surgical centers and ambulatory surgery centers (ASCs) carry the strictest HVAC requirements: positive and negative pressure rooms, HEPA filtration, humidity control, and backup capacity. Load depends heavily on OR count and operating hours.

Across all four categories, the common thread is that electricity reliability matters more than for a typical office, and the equipment load is less flexible than most commercial accounts.

What drives your monthly bill

The number on your medical office electricity bill is not one price. It is a stack of charges, and most practice managers focus only on the top row.

The energy charge is the per-kWh number suppliers quote. Under a typical fixed-rate contract, this is the only piece that is actually locked.

TDSP delivery charges cover poles, wires, transformers, and metering. These are regulated by the Public Utility Commission of Texas and the same regardless of which supplier you pick. They float with periodic rate case decisions.

Demand charges are based on your peak 15-minute interval during the billing period, measured per kW. Imaging centers and surgical suites can create large demand spikes relative to their average load, which puts the demand charge on par with or above the energy charge for some practice types.

4CP transmission applies to larger accounts (roughly 700 kW peak and above). Standalone medical offices rarely hit that threshold, but imaging centers, ASCs, and multi-tenant medical office buildings often do.

Regulatory, fees, and taxes cover PUCT assessments, ERCOT fees, gross receipts tax, and sales tax. Medical practices generally do not qualify for sales tax exemption on commercial electricity in Texas, though specific property structures (hospital-affiliated facilities, nonprofit clinics) sometimes do.

For a plain-English walk-through of how commercial electricity gets billed before you compare offers, see the commercial electricity pillar guide.

Contract decisions that move the number

Three decisions do most of the work on a medical office electricity contract.

Term length: Most Texas medical practices land on 24 or 36 month fixed-rate terms. Twelve-month deals suit practices expecting market softening, planning a build-out, or anticipating a merger. Longer terms protect against a rising forward curve. Terms beyond 36 months rarely pencil out.

What is actually fixed: A fixed-rate contract often lets delivery charges, 4CP, regulatory pass-throughs, and supply-side demand charges float. For imaging centers with large demand charges, the delta between a true fixed and a pass-through contract can be material.

Bandwidth: Your contract assumes a usage range, usually either side of forecast. Adding a new MRI, opening a procedure room, extending clinical hours, or absorbing patient volume from a departing physician all change usage. Volume outside the band gets priced at spot. If you expect operational changes, negotiate a wider band up front.

The early termination fee and material change clause both deserve red-line attention before signing. The small business procurement guide covers the broader clause review approach.

Multi-site practices and physician groups have real leverage

Physician groups, specialty networks, and managed care organizations have a procurement advantage that single practices do not: aggregated load. Suppliers price a combined portfolio more aggressively because the volume is easier to hedge, one credit review covers all sites, and administrative cost is spread across more revenue.

Coordination questions worth working through:

Renewal timing. Aggregating onto a single renewal date gives maximum leverage but concentrates portfolio exposure. Groups with ten or more locations often stagger renewals into two or three cohorts across the year.

TDU zone coverage. A statewide practice group spans Oncor, CenterPoint, AEP, and sometimes TNMP. The shortlist has to cover your footprint. See Oncor coverage and CenterPoint coverage for North Texas and Houston coverage, AEP Texas Central and AEP Texas North for South and West Texas, and TNMP coverage for the Gulf Coast pockets.

Add-a-site language. Groups that are growing need a clean mechanism for adding new locations without renegotiating the whole book.

Reliability tiering. Imaging centers and surgical suites may need different reliability provisions than primary care offices in the same portfolio.

Where your practice sits

Texas has four investor-owned TDUs plus municipal utilities. For medical practices, the most important markets are the Houston Medical Center area under CenterPoint, the Dallas medical corridor under Oncor, and the Plano and Frisco specialty clusters also under Oncor.

Austin Energy and CPS Energy are municipal utilities that do not allow retail choice. Medical practices inside Austin or San Antonio city limits buy under the utility's tariff. Practices in surrounding competitive-choice areas can shop retail providers. See the Houston commercial electricity page or Dallas commercial electricity page for market detail.

Where medical offices overpay

Medical practice margins are tight after staffing and insurance.

Letting the contract roll to month-to-month: Holdover rates after contract expiry run well above market. Six months of inattention costs serious money.

Signing before adding major equipment: A new MRI, CT, or expanded procedure capacity meaningfully changes load. Signing a 36-month contract six months before a capital project is signing against your own forecast.

Comparing only cents per kWh: Pass-throughs, demand charges, and bandwidth penalties all change the real cost.

Underestimating demand charges: For imaging-heavy practices, the demand component is a significant share of the bill. Shaving the energy rate while ignoring the demand charge misses where the real money sits.

Treating all locations the same in a portfolio: Primary care offices and imaging centers have very different load profiles. A one-size-fits-all contract across both leaves pricing on the table.

Timing the renewal

Start well before contract expiry. For a single practice, three to six months of runway is enough. For a multi-site group or an imaging-heavy practice, six to nine months is safer.

The single most avoidable mistake is starting in the final 30 days. That gives suppliers all the leverage, and you lose the ability to shop, time the market, or negotiate terms.

How Electric Decisions runs a medical office procurement

Five documented steps. Same process on a solo practice, same process on a 40-location specialty group.

Step 1: Intake

We pull your last 12 months of usage from the TDU through a Letter of Authorization and profile every meter. For portfolios, we build a consolidated usage picture flagging the locations that drive most of the demand exposure.

Step 2: Reference

We benchmark your current all-in cost against the live ERCOT forward curve for the exact term you are evaluating.

Step 3: Competition

We run an identical-specs RFP against the suppliers who bid your zone or zones competitively.

Step 4: Contract

We red-line the paperwork in plain English. ETF, bandwidth, material change clause, pass-through caps, holdover language.

Step 5: Execution

We manage the switch between your existing REP and the new REP so service never interrupts. Then we watch the market through your term and put you back into competition before the next renewal.

Our margin is disclosed in writing before you sign.