Texas Prepaid vs Postpaid Electricity: Compare True Monthly Cost

If you are shopping for electricity in Texas, you have probably seen eye-catching rates—9¢, 11¢, sometimes lower—printed on flyers and comparison sites. Those numbers are real, but they are rarely the number that lands on your bank statement. Prepaid (pay-as-you-go) and postpaid (traditional billed) plans can both be legitimate choices. The plan that wins on monthly cost depends on your usage, your utility territory, and the fees buried in the fine print—not the headline rate alone.

This guide walks through how each billing model works in Texas, what actually drives your monthly total, and how to compare prepaid and postpaid options on equal footing.

Why the headline ¢/kWh rate misleads you

Texas residential customers paid an average of 14.94 cents per kilowatt-hour (kWh) for electricity in 2024, according to federal energy data—though your all-in price can be higher or lower depending on contract type, usage tier, and pass-through charges (¹).

That average price is only half the story. Your bill also depends on how many kWh you use. In hot summers, air conditioning pushes usage sharply higher; the U.S. Energy Information Administration forecast that residential customers in Arkansas, Louisiana, Oklahoma, and Texas would average about 1,490 kWh per month during peak summer months (²). A plan priced attractively at 1,000 kWh can look expensive—or cheap—when your July meter reading tells a different story.

Every serious comparison starts with two inputs: your typical monthly kWh and the all-in average price at that usage level, not the teaser rate on the advertisement.

Texas market basics: who sends the bill, who owns the wires

Most Texans in the ERCOT grid live in a competitive retail area where you choose a Retail Electric Provider (REP)—the company that sells you power—while a separate Transmission and Distribution Utility (TDU, also called a TDSP) delivers it over local wires (³). Retail electric providers serve roughly 75% of ERCOT load; municipally owned utilities and electric cooperatives that opted out of competition serve the rest (⁴).

The Public Utility Commission of Texas runs Power to Choose (powertochoose.org), the official comparison site for competitive plans (³). Both prepaid and postpaid products appear there, but the site is a starting point—not a substitute for reading each plan's disclosure documents.

Your REP collects payment and sends communications (or balance alerts, for prepaid). Your TDU—Oncor in much of North Texas, CenterPoint in Greater Houston, AEP Texas or TNMP in other regions—maintains poles, lines, and your meter. TDU delivery charges apply no matter which REP you pick, and they pass through on your account without markup (⁵).

In regulated markets—including parts of Texas without retail choice, and choice states like Ohio and Maryland with different rules—you may not see prepaid options at all. The comparison framework below still applies: separate delivery from supply, find your usage, calculate all-in cost.

Postpaid electricity: the traditional monthly bill model

Postpaid service is what most Americans picture when they think "electric bill." You use electricity throughout the month; the REP meters your consumption, adds pass-through TDU charges and applicable taxes, and sends a bill. You typically have a due date, and late payment can trigger penalties (⁵).

What shows up on a postpaid bill

Texas REPs may bundle charges into a single energy rate or itemize them. Common line items include (⁵):

• Energy charge — cost of the kWh you consumed
• Base charge — flat monthly fee regardless of usage
• TDU delivery charges — cost to move power from the grid to your home
• TDU surcharges — tariff riders for transmission upgrades, energy efficiency programs, and similar approved costs
• Advanced metering charge — cost recovery for smart meters
• Taxes and PUC assessment — statutory fees
• Minimum usage fee — charged by some REPs if usage falls below a threshold

That last fee catches low-usage households off guard. Consumer advocates have flagged Texas plans that charge $7 to $20 per month when usage drops below 1,000 kWh (⁶). If you live alone in a small apartment, a "cheap" postpaid plan can cost more than the headline rate suggests.

Postpaid plans also come in several flavors—fixed, variable, indexed, time-of-use—each with different price stability (⁷). Fixed-rate plans lock in your energy price for the contract term (with exceptions for TDU and regulatory pass-through changes). Variable and indexed plans can move month to month.

Credit checks, deposits, and billing format

Many postpaid REPs run credit checks and may require a refundable deposit before starting service—especially for customers with limited credit history. Prepaid exists partly as an alternative to that hurdle (more on that below).

Under PUC rules, residential postpaid customers must receive bills in writing via U.S. mail unless they agree to electronic billing; REPs cannot charge for standard mailed bills (⁸).

Prepaid electricity: pay first, monitor daily

Prepaid electric service means you purchase power before you use it. Your REP tracks the balance as the smart meter reports usage—often daily—and deducts costs in near real time (⁹). The PUCT describes it as a "pay-as-you-go" model enabled by advanced metering (⁷).

How starting prepaid service works

You choose a REP and contact them to enroll. Instead of a deposit, the REP requires a connection balance of up to $75 credited to your account before service begins. You may also need to cover TDU fees upfront, so the total due at sign-up can exceed $75 (⁹).

Prepaid customers do not receive a traditional monthly bill. You get electronic notices about your remaining balance. On request, your REP must provide a Summary of Usage and Payment (SUP) covering up to twelve months, showing usage, charges, average price, and payments by calendar month (⁹).

Disclosure documents: EFL plus Prepaid Disclosure Statement

Like postpaid plans, prepaid products have an Electricity Facts Label (EFL) showing standardized pricing benchmarks. Prepaid plans also require a Prepaid Disclosure Statement (PDS) with product-specific fees, disconnection balance, and communication rules (⁹). Both documents appear on Power to Choose and the REP's website.

The PUCT compares prepaid pricing to buying gasoline: on variable-rate prepaid, the per-kWh price can change daily, so there is no single fixed rate for the electricity you consume each day (⁹). Most prepaid products are variable-rate plans (⁹).

Disconnect risk and reconnect costs

Prepaid service continues only while your balance stays above the disconnection balance, which REPs may set as high as $10 (⁹). Fall below it and service can disconnect with as little as one day's notice if usage drains the account faster than expected (⁹).

If you disconnect with a negative balance, you must pay that off and fund a new connection balance to restore power. Service should resume within two hours after correcting the balance (⁹).

Who prepaid is—and is not—for

Prepaid can suit households that want to avoid deposits, pay in smaller increments, or monitor usage closely (⁹). It is a poor fit if you rely on LIHEAP or other bill-payment assistance, because some agencies do not fund prepaid accounts—confirm eligibility before enrolling (⁹).

Critical-care and chronic-condition customers cannot enroll in prepaid; if your status changes while on prepaid, the REP must transition you without a fee (⁹).

The shared cost stack: TDU delivery hits both models equally

Whether you prepay or pay later, TDU delivery charges are non-negotiable and regulated by the PUCT (⁵). REPs pass them through—they do not pocket them.

What delivery includes

CenterPoint Energy, the TDU for much of the Houston area, explains that REPs include a Delivery Charge on every bill, combining fixed and volumetric components (¹⁰):

• Base meter charge — meter reading, testing, replacement (CenterPoint listed $2.79/month as of August 2025)
• Base customer charge — billing data submission, call center, customer programs ($2.11/month as of August 2025)
• Volumetric charges — per-kWh fees for distribution, transmission cost recovery, energy efficiency riders, and similar approved items

Oncor, the North Texas TDU, describes its residential delivery charge to REPs as a $4.23 fixed monthly amount plus roughly 5 cents per kWh used (¹¹). At 1,000 kWh, that TDU portion alone is about $54—before any energy supply charge. Rates change when the PUCT approves tariff updates; always check current TDU tariffs for your address.

Industry stakeholders note that roughly 80% or more of a Texas customer's bill is recovered through volumetric (per-kWh) charges today (¹²). That means usage still drives most of your bill under either billing model—prepaid does not magically sidestep delivery costs.

Building a true monthly cost comparison

Apples-to-apples comparison uses the same formula for both models:

True monthly cost ≈ (monthly kWh × all-in ¢/kWh) + monthly base fees + pass-through TDU charges + taxes − bill credits

The trick is getting an honest all-in ¢/kWh at your usage—not the 1,000 kWh teaser every REP advertises.

Step 1: Find your usage anchor

Pull 12 months of kWh history from your REP portal, Smart Meter Texas, or past bills. Note summer peaks separately. If you are moving into a new home, use a same-size comparable or TDU averages, then adjust for pool pumps, EV charging, or electric heat.

Step 2: Read the EFL at 500, 1,000, and 2,000 kWh

The PUCT requires every residential plan's EFL to show average price per kWh at 500, 1,000, and 2,000 kWh per month (¹³). Pick the column closest to your real usage. If you consistently use 800 kWh, interpolate between 500 and 1,000—or better, use a plan with transparent tier pricing.

For prepaid, read the EFL and the PDS. Reload fees, third-party payment processor charges, and paper SUP fees live in the PDS (⁹).

Step 3: Add costs prepaid avoids—and costs it adds

Spread a postpaid deposit over a 12-month contract when comparing first-year cash outlay. A $200 deposit makes month one expensive even if months 2–12 look fine.

Step 4: Work an example at 1,000 kWh

Suppose your postpaid fixed plan shows an EFL average of 16.0¢/kWh at 1,000 kWh, including bundled TDU pass-throughs:

• Energy + delivery bundled: 1,000 × $0.160 = $160.00
• Base charge (if not in EFL average): e.g., $9.95
• Estimated postpaid total: ~$170

Now compare a prepaid variable plan whose EFL shows 17.5¢/kWh at 1,000 kWh today—but remember the rate can change tomorrow (⁹):

• If the rate holds: 1,000 × $0.175 = $175.00
• No separate deposit, but you prefunded a $75 connection balance (still your money, not a fee)
• Estimated prepaid total: ~$175 if rates stay flat—plus any PDS payment fees

In this illustration, postpaid wins slightly on energy price—but prepaid wins on upfront cash if a deposit would otherwise be required. Flip the EFL numbers or add a minimum usage fee on the postpaid side and the winner changes.

Step 5: Stress-test summer and winter

Re-run the math at 1,500 kWh (a plausible Texas summer month per regional forecasts) (²). Tiered plans and bill-credit gimmicks often punish or reward high usage. A postpaid plan with a $20 minimum usage fee at 900 kWh but a bill credit at 1,200 kWh can beat prepaid in July and lose in April.

Fixed charges and usage: why "use less, pay less" is not always true

Consumer Reports notes that electric bills combine per-kWh energy charges with mandatory fixed charges every customer pays before the first kWh (¹⁴). Historically those fixed fees ran $5–$10/month in many markets, but utilities nationwide have pushed to raise them—reducing your ability to lower bills through conservation (¹⁴).

Texas TDU base charges (CenterPoint's ~$4.90/month in fixed meter + customer fees, Oncor's $4.23 base) hit prepaid and postpaid alike. The bigger swing factor is usually the REP's energy rate structure, not the billing model itself.

Red flags and scams—prepaid cards are not prepaid plans

Confusingly, scam artists demand payment via prepaid debit cards (Green Dot, Vanilla, etc.) while impersonating utilities (¹⁵). Legitimate Texas REPs accept standard payment methods listed in your contract; they do not threaten immediate disconnection unless you buy a store gift card.

Legitimate prepaid electricity plans are formal REP products with EFL and PDS disclosures—not phone scams. If someone pressures instant payment by prepaid debit card, hang up and call your REP using the number on your official documentation (¹⁵).

Decision checklist: which billing model fits your household?

Prepaid may cost less in true monthly terms if you:
- Would otherwise pay a large deposit on postpaid
- Use usage alerts to keep consumption down
- Prefer weekly or biweekly cash outflows instead of one monthly bill
- Have stable access to reload channels (app, web, payment centers)

Postpaid may cost less if you:
- Qualify for a competitive fixed-rate plan below prevailing variable prepaid rates
- Use bill-payment assistance programs
- Need predictable due dates for budgeting
- Use less than 1,000 kWh and can avoid minimum-usage-fee plans

Either way, before you sign:
1. Download the EFL at your actual kWh band (¹³)
2. For prepaid, read the PDS cover to cover (⁹)
3. Confirm TDU territory—delivery rates differ by Oncor, CenterPoint, AEP, TNMP (¹⁰)
4. Compare 12-month total cost, not just month one
5. Verify assistance eligibility if relevant (⁹)

The bottom line

Prepaid and postpaid electricity in Texas draw from the same wires, the same TDU tariffs, and the same regulatory fee stack. Neither label is automatically cheaper. Prepaid trades deposit hurdles and monthly billing for daily rate exposure and faster disconnect rules. Postpaid offers rate stability and assistance compatibility but may require credit approval and carries late-payment penalties.

Your true monthly cost is a math problem: usage × all-in rate + fixed fees, adjusted for deposits, reload habits, and seasonal swings. Run the numbers at the kWh you actually use, read the EFL and (for prepaid) the PDS, and ignore any quote that stops at the headline cent sign. That is how you compare prepaid and postpaid like a professional—not like a marketing department wants you to.