Choosing a plan takes you to the provider's enrollment page.
ZIP code 78551 (North Harlingen) in Harlingen, Cameron County, Texas is served by AEP Texas Central for electricity delivery. With 8 retail electricity providers competing for your business in this ZIP code, commercial customers have strong negotiating power. Whether you need demand charge plans, time-of-use pricing, or green energy for your business, compare all 75 available options above.
📊 4CP Transmission Charges: Your transmission fees are based on usage during ERCOT's four coincident peaks (June–September). Reducing demand during these 15-minute windows can save 15–20% on annual costs.
⚡ Demand Charges: Commercial plans often include demand charges based on your peak kW or kVA. Managing peak load with scheduling and automation can significantly reduce bills.
🔄 Contract Flexibility: Business electricity contracts offer custom terms, block pricing, and indexed rates. Compare options to find the structure that fits your operation.
🌿 Green Energy Credits: Many Texas businesses qualify for renewable energy certificates (RECs) and sustainability incentives when choosing 100% wind or solar plans.
🏠 Residential Tools & FAQ
🔌 Backup Generator Sizer
Select the appliances you want to keep running during a power outage:
Recommended Generator Size
2 kW
1,320 Watts (includes 20% safety margin)
💡 The 20% safety margin accounts for startup surges when motors and compressors kick in.
❄️ A/C Cooling Cost Calculator
Estimate your A/C cost using local weather and your electricity rate.
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Texas Power Outages
Active OutageSource: DOE EAGLE-I / ORNL (openenergyhub.ornl.gov)
Why Compare Electricity Plans in 78551 (Harlingen)?
📍 Your TDU – AEP Texas Central: Harlingen (78551) is served by AEP Texas Central for power delivery. You choose your retail electricity provider; AEP Texas Central handles the wires and meters.
💰 Save $200-$500/Year: Comparing rates across providers in 78551 can save hundreds annually. Lock in a fixed rate during low-demand months (Jan-Apr) for the best pricing.
⚡ null+ Plan Options: Choose from 6, 12, or 24-month fixed contracts, variable-rate plans, prepaid electricity, or 100% renewable energy from wind and solar.
🎯 Switch in Minutes: Switching providers is free with no service interruption. Most switches happen same-day or next business day. No technician visit needed.
Moving to Harlingen?
If you're relocating to Harlingen, choosing an electricity plan is simple. Look up your new ZIP code above, and compare available providers. Most switches happen same-day or next business day. No outages during switching, and you can usually lock in rates 60–90 days before your move date for the best pricing.
Electricity FAQs for Harlingen
1. What does "deregulated" mean for Texas electricity? In a deregulated market, you have the power to choose your retail electricity provider. Your local TDU (Transmission and Distribution Utility) still delivers the electricity through the same poles and wires regardless of which provider you pick.
2. What is an Electricity Facts Label (EFL)? An EFL is a standardized document that shows the true cost of an electricity plan at 500, 1,000, and 2,000 kWh usage levels. It also lists all fees, contract length, cancellation penalties, and renewable energy content so you can compare plans accurately.
3. What does 100% renewable mean? 100% renewable plans match your usage with renewable energy credits (RECs) — your home still receives standard grid power.
4. What is the difference between fixed and variable rate plans? A fixed-rate plan locks in your energy price per kWh for the full contract term, protecting you from market swings. A variable-rate plan changes monthly based on wholesale prices and can go up or down each billing cycle.
5. What are bill credit plans and are they worth it? Bill credit plans give you a statement credit when your usage hits a specific threshold (e.g., 1,000 or 2,000 kWh). If you consistently hit the target, you get a great effective rate. If you miss it, your cost per kWh can be significantly higher than advertised.
6. When is the best time to shop for electricity in Texas? The best time to lock in low rates is January through April, when demand is low and providers compete for customers. Rates tend to peak from June through September during the summer cooling season.
7. Can I switch electricity providers at any time? Yes, you can switch providers at any time. If you switch within 14 days of your contract end date, there is no early termination fee. Outside that window, your current plan may charge a cancellation penalty listed on your EFL.
8. What is a TDU delivery charge? The TDU delivery charge covers the cost of maintaining the power lines, poles, transformers, and meters that deliver electricity to your home. This fee is the same regardless of which provider you choose and is regulated by the Public Utility Commission of Texas.
9. Are renewable energy plans available in Texas? Yes, most retail providers offer plans powered by wind, solar, or a mix of renewable energy certificates (RECs). Texas is one of the top wind energy producers in the world, so green plans are widely available and often competitively priced.
10. What is ERCOT and what do they do? ERCOT (Electric Reliability Council of Texas) manages the Texas power grid and oversees the wholesale electricity market. They ensure reliable supply but do not sell electricity directly to consumers — that is done by retail providers.
11. Can renters choose their own electricity provider? Yes, renters in deregulated ZIP codes have the same right to choose their electricity provider as homeowners. You can shop for plans, switch providers, and take your plan with you if you move within a deregulated area.
12. How current are these rates? We refresh plan data every two hours and show the time each page's rates were last verified.
13. Who is AEP Texas Central? AEP Texas Central delivers electricity to Corpus Christi, Victoria, the Rio Grande Valley, and coastal South Texas communities.
14. What is AEP Texas Central's service area? AEP Texas Central serves Corpus Christi, McAllen, Harlingen, Brownsville, Victoria, Laredo, and surrounding South Texas counties.
15. How do I report an outage in the AEP Central area? Call 866-223-8508 or use AEP's outage map at aeptexas.com/outages to report and track power outages.
16. What are AEP Central's delivery charges? As filed with the PUCT effective September 1, 2026, AEP Texas Central's residential delivery charges are $3.24/month ($1.27 customer + $1.97 metering) plus 5.8000¢/kWh.
17. How does hurricane season affect AEP Central customers? The coastal location means higher storm risk from June through November. AEP maintains dedicated storm crews and mutual aid agreements for rapid restoration. Customers should have a generator plan ready.
18. What are the cheapest electricity rates in Harlingen 78551? The lowest rebate price in Harlingen 78551 is shown for months when you qualify for the plan's rebate. Compare all current plans for 78551 above to find the lowest rebate price available today; the year-round estimate includes months with and without the rebate.
19. Which electricity providers serve ZIP code 78551? ZIP code 78551 in Harlingen, TX is served by AEP Texas Central for delivery, and residents can choose from multiple retail electricity providers. Popular providers in this area include TXU Energy, Reliant, Green Mountain Energy, Direct Energy, and Frontier Utilities, among others. Each provider offers different plan types and rates.
20. What do commercial electricity plans cost in Harlingen, TX? Commercial plans in 78551 start at 10.1¢ all-in at the nearest tier (~5,000 kWh/mo); demand charges may apply depending on facility size and contract.
21. How do I switch electricity providers in Harlingen? Switching electricity providers in Harlingen is free and takes about 1-2 business days with no service interruption. Simply choose a new plan from the comparison above, complete the enrollment, and your new provider handles the rest. AEP Texas Central continues delivering power through the same lines. No technician visit is needed.
22. What TDU serves ZIP code 78551? ZIP code 78551 in Harlingen, Cameron County, TX is served by AEP Texas Central. They handle power delivery, meter reading, outage response, and new service connections. Your TDU remains the same regardless of which retail electricity provider you choose.