Powerbilly
Cheapest Harlingen electricity rates (September 2026)
Harlingen is in AEP Texas (Central division)'s delivery area, and its regulated charge is in every price here. Plans are ranked by what a full year costs at Harlingen's own seasonal usage rather than at the advertised 1,000 kWh.
Worth buying in Harlingen
The cheapest plans over a full Harlingen year from a provider rated 3★ or better with no flagged catches. Everything sold here is in the ranking below, cheapest first.
Top pick
$98/mo
a full Harlingen year
- Term1 mo
- Cancel feeNone
2nd pick
$98/mo
a full Harlingen year
- Term1 mo
- Cancel feeNone
3rd pick
$101/mo
a full Harlingen year
- Term3 mo
- Cancel fee$150
These prices assume a typical Harlingen home, 13,798 kWh across the year. Enter one real month from your bill and every plan re-ranks against your own usage, with filters for term, provider rating and renewable share.
Every Harlingen plan, cheapest first
| # | Plan | Term | Per month | Per year | Effective rate | Catches |
|---|---|---|---|---|---|---|
| 1 | No Contract Advantage Top pick Ranchero Power | 1 mo | $98 | $1,174 | 8.5¢ | none |
| 2 | Variable Advantage 2nd pick Southern Federal Power LLC | 1 mo | $98 | $1,174 | 8.5¢ | none |
| 3 | Octo Simple 3 3rd pick Octopus Energy | 3 mo | $101 | $1,212 | 8.8¢ | none |
| 4 | Sustainable Home Bundle - 3 $49.99 upfront Tara Energy | 3 mo | $111 | $1,336 | 9.7¢ | none |
| 5 | Sustainable Lifestyle - 3 $49.99 upfront Amigo Energy | 3 mo | $111 | $1,336 | 9.7¢ | none |
| 6 | Sustainable Living Bundle - 3 $49.99 upfront Just Energy | 3 mo | $111 | $1,336 | 9.7¢ | none |
| 7 | Sustainable Simply Days - 3 Time-of-use $49.99 upfront Amigo Energy | 3 mo | $112 | $1,344 | 9.7¢ | time-of-use |
| 8 | Balanced Days Bundle - 3 Time-of-use $49.99 upfront Tara Energy | 3 mo | $112 | $1,344 | 9.7¢ | time-of-use |
| 9 | Sustainable Days Bundle - 3 Time-of-use $49.99 upfront Just Energy | 3 mo | $112 | $1,344 | 9.7¢ | time-of-use |
| 10 | SmartGreen 3 Smartenergy Holdings LLC | 3 mo | $112 | $1,345 | 9.7¢ | base charge |
| 11 | Choose 3 Spark Energy LLC | 3 mo | $113 | $1,357 | 9.8¢ | none |
| 12 | Frontier Power Saver 8 Frontier Utilities | 8 mo | $117 | $1,399 | 10.1¢ | none |
| 13 | Gexa Eco Choice 8 Gexa Energy | 8 mo | $117 | $1,399 | 10.1¢ | none |
| 14 | Companion + Perks 8 Companion Energy | 8 mo | $117 | $1,399 | 10.1¢ | none |
| 15 | PTC 3 Month - Postpaid Payless Power | 3 mo | $118 | $1,413 | 10.2¢ | none |
| 16 | Digital Choice 8 Rhythm | 8 mo | $119 | $1,426 | 10.3¢ | none |
| 17 | No Bull 8 Energy Texas | 8 mo | $119 | $1,426 | 10.3¢ | none |
| 18 | Ranchero Cheapskate - 3 Ranchero Power | 3 mo | $120 | $1,436 | 10.4¢ | none |
| 19 | SoFed Try Us Out Now - 3 Southern Federal Power LLC | 3 mo | $120 | $1,436 | 10.4¢ | none |
| 20 | Simple Switch 3 Constellation NewEnergy Inc | 3 mo | $122 | $1,460 | 10.6¢ | min-usage fee |
| 21 | Bright Nights 10 Time-of-use Chariot Energy | 10 mo | $123 | $1,471 | 10.7¢ | time-of-use, base charge |
| 22 | Stars and Stripes Flex Revolution Energy LLC | 1 mo | $124 | $1,488 | 10.8¢ | base charge |
| 23 | PTC Infusion Flex Infuse Energy | 1 mo | $124 | $1,490 | 10.8¢ | base charge |
| 24 | Essential Infusion Flex Infuse Energy | 1 mo | $124 | $1,492 | 10.8¢ | base charge |
| 25 | Liberty Bell Flex Revolution Energy LLC | 1 mo | $124 | $1,493 | 10.8¢ | base charge |
| 26 | True Value 10 True Power | 10 mo | $125 | $1,495 | 10.8¢ | none |
| 27 | Bright Nights 6 Time-of-use Chariot Energy | 6 mo | $125 | $1,498 | 10.9¢ | time-of-use, base charge |
| 28 | Essential Infusion 3 Infuse Energy | 3 mo | $125 | $1,500 | 10.9¢ | base charge |
| 29 | Liberty Bell Green Flex Revolution Energy LLC | 1 mo | $125 | $1,501 | 10.9¢ | base charge |
| 30 | Stars and Stripes Green Flex Revolution Energy LLC | 1 mo | $125 | $1,502 | 10.9¢ | base charge |
Time-of-use prices assume the split between discounted and full-price hours printed in each plan's fact label. A home that leans on the full-price hours pays more than the table shows.
The 30 cheapest of 166 plans sold in Harlingen.
See all 166 AEP Texas Central plans →
Cheapest of the conditionally priced plans
- Time-of-use Sustainable Simply Days - 3 Amigo Energy $112/mo time-of-use
- Minimum-usage fee Simple Switch 3 Constellation NewEnergy Inc $122/mo min-usage fee
- Prepaid Summer 2026 Pronto Power $165/mo prepaid
How this ranking works
Prices are a full year at Harlingen's usage shape, from the ERCOT load profile for the South weather zone: 13,798 kWh a year, peaking near 1,768 in August and dropping to about 649 in February. Ranking on the year instead of the advertised 1,000 kWh moves any plan whose price depends on where monthly usage lands. It moves them here: Simple Saver 3 wins at 1,000 kWh and is not the cheapest once a full Harlingen year is priced.
"Effective rate" is the yearly total divided by the year's kWh. Your home isn't the state-average home, so enter your real usage and every plan re-ranks against your own bills.
These are residential plans. Business and commercial supply in Harlingen is quoted per site rather than published as a rate, so none of it appears here and a residential rate is not what a business would pay.
Same answer nearby
These cities share Harlingen's delivery area and weather zone, so this ranking is theirs too: Corpus Christi, McAllen, Edinburg, Mission, Aransas Pass, Hebbronville.
Rank these plans for your usage →
Prices from PowerToChoose, refreshed daily (last refresh September 15, 2026). Rankings are commission-blind. Load profile from ERCOT's backcasted residential data. How this site works · How Power to Choose works (and where it misleads).