Texas Bill Credit Electricity Plans: When a Cheap Rate Gets Expensive
A bill credit can make an electricity plan look cheap at 1,000 kWh and expensive at 999 kWh. The deciding factor is whether your household qualifies for the credit in each billing cycle, and how the total cost compares with a plan without that condition.
By WattFacts · Published October 13, 2026 · Updated October 21, 2026 · Calculations below use illustrative plans, not current provider offers.
Try the bill credit calculator with your rates and 12 billing periods.
How do bill credit electricity plans work?
A provider subtracts a set dollar amount from your bill when your usage meets the plan’s conditions. A credit might start at a minimum usage threshold, apply only within a usage band, or follow another rule. Read the Electricity Facts Label (EFL) and Terms of Service for the exact amount, qualifying range and billing-cycle conditions.
The credit is a discount on the total bill. It does not mean every kWh costs the advertised average rate. If you miss the qualifying threshold, the discount disappears even though you used less electricity.
Example: a $100 credit at 1,000 kWh
Suppose Plan A charges a combined energy and delivery rate of 20¢/kWh, plus $5 per billing cycle. It gives a $100 credit at usage of at least 1,000 kWh, with no upper limit. Plan B charges a combined 14¢/kWh plus $5, with no usage credit.
These are simplified teaching examples. The combined rates already include per-kWh delivery charges, and the $5 includes all fixed charges in the example. Taxes and other charges are excluded from both plans. These amounts are not a quote or a statement of current TDU charges.
Plan A bill = kWh × $0.20 + $5 − qualifying $100 credit.
Plan B bill = kWh × $0.14 + $5.
Illustrative monthly bills near the 1,000 kWh credit threshold. Both plans include delivery; taxes are excluded.
Plan A at 999 kWh$204.80No credit
Plan A at 1,000 kWh$105.00$100 credit applies
| Usage | Plan A credit | Plan A bill | Plan A average | Plan B bill |
|---|---|---|---|---|
| 500 kWh | $0 | $105.00 | 21.00¢/kWh | $75.00 |
| 800 kWh | $0 | $165.00 | 20.63¢/kWh | $117.00 |
| 999 kWh | $0 | $204.80 | 20.50¢/kWh | $144.86 |
| 1,000 kWh | $100 | $105.00 | 10.50¢/kWh | $145.00 |
| 1,200 kWh | $100 | $145.00 | 12.08¢/kWh | $173.00 |
| 1,500 kWh | $100 | $205.00 | 13.67¢/kWh | $215.00 |
| 2,000 kWh | $100 | $305.00 | 15.25¢/kWh | $285.00 |
At 1,000 kWh, Plan A costs $105, or 10.5¢/kWh. At 999 kWh, it costs $204.80, or about 20.50¢/kWh. Using one kWh less raises the bill by $99.80 because the $100 credit disappears.
At 2,000 kWh, the credit still applies, but Plan A costs $305 versus Plan B’s $285. A fixed dollar credit becomes a smaller discount per kWh as usage rises.
When does the credit plan actually win?
For these examples, Plan A costs $0.06 more per kWh before the credit. Once usage reaches 1,000 kWh, the $100 credit offsets that difference until about 1,666.67 kWh: $100 ÷ $0.06.
So Plan A is cheaper from 1,000 kWh to just below 1,666.67 kWh, ties at the break-even point, and costs more above it. Below 1,000 kWh, Plan B is cheaper. Another plan’s qualifying band, charges or credit amount will produce a different result.
Compare the year, not your average month
Consider an illustrative household using 800 kWh in six billing cycles and 1,200 kWh in six others. Its average is exactly 1,000 kWh, but it earns the credit only six times.
- Plan A: 6 × $165 + 6 × $145 = $1,860 per year.
- Plan B: 6 × $117 + 6 × $173 = $1,740 per year.
Plan A costs $120 more over the year. Calculating all twelve cycles at the average 1,000 kWh would incorrectly predict a $1,260 annual cost for Plan A and award six credits the household never earned.
Use twelve actual billing-cycle kWh readings if you have them. Calculate each cycle separately, then add the bills. Seasonal air-conditioning use, travel and changes in household size can move you across a threshold.
What to check before enrolling
- Read the EFL’s pricing section for the credit amount and exact qualifying boundaries. “At least 1,000” and “more than 1,000” are different conditions.
- Check whether there is an upper usage limit. A credit restricted to a band can disappear during a high-use month too.
- Include energy charges, fixed fees, TDU delivery charges and any applicable extra charges. Do not add delivery a second time if you are using a price that already includes it.
- Calculate bills at your actual monthly usage. Do not interpolate between the EFL’s average-price columns across a credit threshold.
- Compare the annual total, contract length and early termination fee with a plan without usage credits. Confirm the offer for your exact address before signing.
A bill credit can be worthwhile when your usage consistently falls in the range where the plan saves money. The lowest advertised price at one usage level is not enough to establish that.
Compare plans with WattFacts
Start with Texas electricity rates for your city and compare the 500, 1,000 and 2,000 kWh columns. WattFacts excludes usage-credit plans from its “lowest price” benchmark; you can show them in the plan table to compare their listed prices. Read our comparison methodology.
Use the electricity bill calculator for a starting estimate with your ZIP code. For a specific bill-credit offer, calculate from its EFL as shown above: the benchmark calculator does not model that offer’s individual credit thresholds.
Considering a different conditional offer? Read how free nights and weekends plans work.
Sources and calculation notes
The Public Utility Commission of Texas recommends reading the EFL and Terms of Service when shopping: PUCT’s Power to Choose consumer tips. Find offers through Power to Choose and confirm the current documents with the provider.
All dollar examples and break-even calculations in this article are WattFacts’ illustrative arithmetic. No provider’s current pricing or eligibility is implied. Displayed bills are rounded to cents; actual billing rules and charges may differ.
Renting? Our Texas apartment electricity guide compares fixed fees and credit thresholds at lower usage and explains what to check before moving in.
Bill credit electricity plan calculator
Change the credit threshold and prices to see when a bill credit helps. Compare individual billing periods before trusting a rate calculated at your annual average usage.
Illustrative flat-rate plans. Enter combined energy + variable delivery rates, before credits; add each plan’s fixed fees separately. Do not enter an advertised average price that already includes a credit or fixed fee.
At 999 kWh: $204.80 with credit rules; $144.86 without a credit.
At the minimum (1000 kWh), the credit-plan bill is $105.00. At 999 kWh, it is $204.80.
Compare 12 billing periods
Replace each period with your actual usage. The example starts with six periods at 800 kWh and six at 1,200 kWh; it is not a forecast.
12-period total: $1860.00 vs $1740.00
Credit plan costs more by $120.00.
Both boundaries are inclusive in this model. Check your EFL for strict boundaries, multiple credit bands, time-of-use rules and other conditions; those are not modeled. Taxes and nonrecurring fees are excluded. A negative result is arithmetic under your inputs, not a promise of a refund.