Texas 12 vs 24 Month Power Plans: Compare True Cost

Shoppers chasing the lowest cents-per-kilowatt-hour often treat contract length as a footnote. In competitive Texas—and in other retail-choice states—term length is part of the price. A twelve-month fixed plan and a twenty-four-month fixed plan can look similar on a billboard and diverge by hundreds of dollars once you count fees, usage, early exit risk, and what happens when the contract ends.

Neither term wins by default. True cost is the all-in average price at your usage, plus the option value of being able to leave or re-shop when life or the market moves.

Why Term Length Beats the Sticker Rate

The number in big type is usually a marketing rate at one usage level. In Texas, providers must publish an ¹ that standardizes rates, fees, and contract terms so you can compare offers. That label—not the ad—is where true cost starts.

A longer contract can post a slightly lower cents-per-kWh because the retail electric provider (REP) is buying more certainty about keeping you as a customer. A shorter contract can post a higher rate because you retain more flexibility to leave when prices fall. ² puts it plainly: neither length automatically saves more; the cheaper term is the one with the lower total cost at your usage after you price early-exit risk and renewal discipline.

Small differences compound. A 0.3¢/kWh gap on 12,000 kWh a year is about $36 before flat fees. On 18,000 kWh it is about $54. Those are the kinds of gaps that disappear—or flip—once a base charge, bill credit, or early termination fee enters the math.

How Texas Retail Choice Actually Works

Most of Texas lets customers choose a REP for the energy (generation/supply) portion of the bill. Delivery still comes from the local wires company—the transmission and distribution utility (TDU)—which maintains poles and wires, reads meters, and responds to outages regardless of which REP you pick. ³, the Public Utility Commission of Texas (PUCT) shopping site, explains that deregulation opened choice in most of the state after a 1999 state law, while some municipal and cooperative areas still do not offer retail choice.

Your bill therefore mixes charges you can shop (REP energy price and plan fees) with charges you generally cannot shop away (TDU delivery charges that pass through on every plan). Comparing REPs without separating those pieces is how people “save” 2¢ on energy and still wonder why the total barely moved.

⁴ defines a fixed-rate plan as one whose price per kWh stays set for the contract period except for changes in transmission and distribution fees, ERCOT or Texas Regional Entity administrative fees, or fees from federal, state, or local laws beyond the REP’s control. That is the legal shape of “fixed” in Texas: locked energy price, not a frozen total bill. Usage still varies with weather. TDU rates can still change through regulatory processes.

For national context, the U.S. Department of Energy notes that some states offer electric choice so a site can get supply from a provider other than the servicing utility, producing an ⁵ where supply and delivery can be billed together or separately. DOE’s ⁶ likewise describes retail-choice states where customers may choose competitive suppliers for the generation portion while delivery remains regulated.

Statewide averages set the backdrop, not your quote. EIA reports Texas residential customers paid an average of ⁷ (versus 14.46 cents in 2023). Your live offer can sit above or below that blend depending on term, fees, TDU territory, and usage.

What “Fixed,” “12 Months,” and “24 Months” Really Mean

PUCT customer-protection rules define a ⁸ as a product with a term of at least three months for which the price—including recurring charges—stays the same through the contract term, with limited pass-through exceptions for TDU charges, certain ERCOT/administrative fees, and new or modified fees imposed by law beyond the REP’s control. A month-to-month contract, by contrast, may not contain a termination fee or penalty under those rules.

Variable month-to-month plans trade price certainty for flexibility. ⁴ notes that variable rates can rise or fall with the market and the company’s discretion, with no monthly contract or cancellation fee, and that contracts of three months or more may carry a penalty if you cancel early. Many plans default to a month-to-month product if you let a term contract expire without shopping—and that default price will likely be much higher.

Indexed products once tied retail prices to public formulas; PUCT rules now prohibit REPs, aggregators, and brokers from offering indexed or wholesale-indexed products to residential and small commercial customers on the timelines set in ⁸. For most households comparing 12 vs 24 months today, the live choice is fixed term length versus variable flexibility—not wholesale pass-through.

Term length changes four practical things:

1. How long your energy price is locked.
2. How long an early termination fee (ETF) can apply if you leave early.
3. How often you are forced to re-shop.
4. How REPs price near-term versus longer-term market risk into the offer.

² frames the same trade-off: 24 months can mean more price certainty and sometimes a lower ¢/kWh; 12 months shortens ETF exposure and brings an annual market check.

True-Cost Math on the Electricity Facts Label

Texas requires every plan’s EFL to show total average price for electric service—reflecting recurring charges, excluding certain taxes—at standardized usage levels. For residential customers, that means ⁸, expressed in cents per kWh. Small commercial EFLs use different usage bands. The EFL must also state whether the product is fixed or variable.

That three-column table is where bill credits and base charges show their teeth. ⁹ warns that advertised rates often assume one usage level, and that bill credits can make a plan look cheap only if you hit a narrow band. Miss the credit threshold and the effective rate jumps. Tiered energy charges work the same way: attractive in the middle, expensive if your house runs cooler or hotter than the marketing assumption.

Flat fees matter as much as energy rates for low and moderate users. Consumer Reports explains that bills combine usage-based charges with a mandatory ¹⁰ paid before the meter “starts running,” historically often in the $5–$10 per month range on utility bills—though competitive REP base charges vary by plan. On competitive offers, WattKarma similarly flags monthly base charges often in the ⁹ range and early termination fees commonly between $100 and $200 on fixed contracts.

¹ also highlights minimum usage fees: if you use less than a plan’s threshold—often 500 or 1,000 kWh in a billing period—you can be charged a fee that may not even appear as a separate line. Apartment dwellers, empty-nesters, and efficient homes get burned here most often.

A practical annualization method:

1. Pull 12 months of kWh from bills (or your meter portal).
2. On each candidate EFL, use the column closest to your average monthly kWh.
3. Estimate annual energy cost as (¢/kWh ÷ 100) × (monthly kWh × 12).
4. Add twelve times any monthly base charge, plus any months you expect to trigger a minimum-usage fee.
5. Compare annual totals—not headline ¢/kWh alone.

¹¹ push the same apples-to-apples habit: ask for the total rate at 1,000 kWh average monthly usage, confirm whether TDU charges and recurring fees are included, and ask about contract length, deposits, expiration, and early-termination penalties.

Illustrative (not live) math at 1,000 kWh per month: a 12-month plan at 11.0¢/kWh all-in with a $9.95 monthly customer charge costs more over a year than a 24-month plan at 10.4¢/kWh with the same customer charge—about $72 of annual difference before exit fees. If you break the 24-month plan midstream and pay a $150 ETF, the “savings” can vanish. Replace those fictional rates with live EFLs; markets move.

Early Exit, Renewal Traps, and Switching Rules

Switching providers itself is usually free of a utility switching fee unless you request a special meter reading outside the regular cycle. ¹ is clear: there may still be penalties if you break an existing REP contract early—check the Terms of Service. After you enroll, ERCOT sends a confirmation mailer, and you have three business days to change your mind; the switch typically completes within seven business days with no service lapse.

Moving is a special case. Under ⁸, a contract is limited to service at the location specified. If you move and, when required, provide reasonable evidence plus a forwarding address, the REP may not assess an early termination fee for that relocation. That protection is why renters should still match term length to lease length when they can—but they are not automatically trapped if a job transfer forces a move out of the premises.

Expiration is where many households lose more money than any ETF. If you have a contract with three or more months remaining, your company must notify you in writing at least 30 days (or one billing cycle) and no more than 60 days (or two billing cycles) before the end, according to ¹. PUCT rules go further for fixed-rate products: REPs must provide multiple written expiration notices, with final notice timing that depends on contract length, and if you take no action after the final notice, the REP must move you to a ⁸ you can cancel anytime without a fee. That default is designed for continuity, not for bargains. ⁴ warns that the month-to-month default price will likely be much higher.

One more calendar detail: near the stated expiration date, residential and small commercial customers generally get a window with no termination penalty in the final stretch of the old fixed contract—⁸ requires bold disclosure that no termination penalty applies for 14 days prior to the dates described in the expiration notice (when the original contract included a termination fee). Shop in that window if you need to leave without an ETF, but do not wait so long that you slide onto the high default rate.

Market Risk: Why Term Length Is a Hedge

Fixed retail rates are a hedge against wholesale spikes—not a shield against every bill change. EIA documented how extreme weather drove wholesale volatility in 2022, including a July Texas heat wave when record demand and weak wind output pushed natural gas generation higher and sent ERCOT North hub wholesale prices to an average of ¹². EIA also notes that ERCOT’s February 2021 Winter Storm Uri average of about $1,800/MWh helped make 2021’s annual ERCOT wholesale average higher than 2022’s. Those wholesale numbers are not your retail bill, but they explain why fixed offers get expensive after stress periods and why some households prefer locking longer when they believe offers will stay elevated.

The flip side is opportunity cost. ⁴ states the fixed-rate bargain openly: if market prices fall, you may have to wait until the contract ends to enjoy a lower price. A 12-month lock lets you re-enter the market sooner if offers soften. A 24-month lock pays you (sometimes) in a lower starting rate and longer insulation—if you stay put and if pass-through TDU or regulatory fees do not erase the gap.

Natural gas prices feed that risk. EIA’s same 2022 wholesale review ties many hub spikes to high gas prices and constrained fuel switching. When gas and wholesale power run hot, competitive fixed offers tend to reprice upward for new enrollments. Timing your shop—and your term—matters as much as picking a brand name.

Who Should Pick 12 Months vs 24 Months

Lean 12 months when:

• The 12-month EFL already wins on annualized cost at your usage.
• You might move, renovate, add rooftop solar, or buy an EV inside two years and want less ETF exposure.
• You want a forced annual market check without living on variable rates.
• You expect competitive offers could fall and want the option to capture them sooner.

Lean 24 months when:

• The 24-month EFL is meaningfully cheaper at your real kWh after fees.
• Housing is stable and you value budget predictability more than re-shopping.
• You are willing to calendar renewals so you never default onto a high month-to-month product.
• You are hedging against another stretch of elevated wholesale-driven retail offers.

Renters deserve a special note. Matching electricity term to lease term is usually the cleanest way to avoid paying an ETF when the lease ends—even though Texas relocation rules can waive the fee when you leave the premises with required proof. Prepaid and month-to-month products exist for maximum flexibility, but ⁴ cautions that prepaid plans generally charge a higher rate and need close balance monitoring.

Small-business and landlord accounts face similar term math with different load shapes. DOE’s rate-option guidance emphasizes that bills can include ⁵, and that demand charges hinge on peaks. A vacancy month that trips a residential-style minimum usage fee—or a commercial demand ratchet—can wipe out a glamorous energy rate. Match the EFL usage band (or commercial load assumptions) to how the building actually runs.

Outside Texas: Choice States and Regulated Markets

If you are shopping in Ohio, Maryland, or another retail-choice state, the 12-vs-24 logic still applies to competitive supply contracts even when the paperwork uses different names. DOE’s rate glossary distinguishes ⁵ (one provider for supply and delivery) from unbundled rates (separate supply and delivery). In choice markets, you often keep the utility for delivery and pick a competitive supplier for commodity energy—sometimes on multi-year fixed supply deals.

In fully regulated, vertically integrated markets, you typically cannot pick a 12- or 24-month competitive supply plan at all. Your levers are utility rate schedules, time-of-use options, budget billing, efficiency, and—if available—utility green tariffs. DOE’s ⁶ describes how state commissions regulate delivery everywhere and how, outside retail competition, investor-owned utilities’ generation costs flow through regulated retail prices. Comparing “12 vs 24” there means comparing utility program terms, not Texas-style REP contracts.

Wherever you live, fixed customer charges still shape true cost. Consumer Reports’ reporting on ¹⁰ is a useful reminder: a low energy rate paired with a rising flat charge can punish low-usage homes—the opposite of what many efficiency-minded households expect.

A Decision Checklist You Can Use This Week

1. Confirm you are in a choice area (in Texas, start at ³ with your ZIP code).
2. Gather 12 months of kWh. Do not trust a single summer bill.
3. Shortlist one strong 12-month and one strong 24-month fixed EFL at your usage column.
4. Annualize each offer: energy + base fees + expected minimum-usage hits.
5. Read the ETF structure and ask what happens if you move or switch early.
6. Read the expiration and default-renewal language. Put reminders at about 60 days and 14 days before end.
7. Ask the ¹¹ about all-in price, plan type, deposit, payment options, missed payments, and renewal.
8. Pick the term that wins the math and matches how long you will stay—then enroll only after you can live with both.

The quiet truth about Texas 12- vs 24-month power plans is that “true cost” is a portfolio: price × usage × fees × probability you leave early × probability you forget to renew. Run that portfolio on the EFL, not on the ad. Twelve months is not automatically safer. Twenty-four months is not automatically cheaper. The better plan is the one whose all-in cost and commitment window fit the house you actually live in.