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Your electricity in zip code 77640 is delivered by Entergy Texas, Inc.. This area is served by a regulated utility.
Port Arthur's 77640 zip code is served exclusively by Entergy Texas, Inc. (ETX), a regulated utility operating in Jefferson County, Southeast Texas. Unlike deregulated parts of Texas where residents can shop among dozens of retail electric providers, households and businesses in 77640 are not able to choose an alternative electricity supplier. With a city population of approximately 56,039 and a median household income of $35,424 — well below the Texas state median — keeping energy costs manageable is a real priority for Port Arthur families. As of March 2026, the average electricity rate in this area is approximately 12.4¢ per kilowatt-hour. While provider choice isn't available here, understanding your rate, your utility structure, and your efficiency options can still make a meaningful difference on your monthly bill.
Residents of Port Arthur's 77640 zip code pay an average rate of 12.4¢ per kilowatt-hour through Entergy Texas, Inc. This rate reflects the bundled cost of electricity generation, transmission, and distribution — all managed under the regulated utility model. Because ETX operates as a vertically integrated utility in Southeast Texas, the rate you pay is set by the Public Utility Commission of Texas (PUCT) and is not subject to competitive market fluctuations. For context, the statewide average in deregulated Texas markets often ranges between 11¢ and 16¢/kWh depending on contract type, so 77640 sits in a reasonable mid-range position.
Seasonal demand plays a significant role in energy costs here. Port Arthur's Gulf Coast climate means long, humid summers with heavy air conditioning loads — typically June through September — which is when monthly bills tend to peak. March is a transitional month with relatively moderate usage, making it a good time to audit your home's efficiency before summer demand surges.
Because 77640 is a regulated market, there are no short-term, medium-term, or long-term retail electricity contracts to compare. Entergy Texas sets rates through a tariff structure approved by state regulators. Rate changes require formal PUCT approval, giving consumers some protection from sudden price spikes — though it also means you cannot lock in a lower rate by shopping around.
There is no retail provider competition in zip code 77640. Entergy Texas is the sole electricity provider for this area. Residents cannot enroll with alternative retail electric providers (REPs) such as Reliant, TXU Energy, Gexa Energy, or Green Mountain Energy, which are available in deregulated Texas ZIP codes. This is a fundamental structural difference from cities like Houston or Dallas where energy shopping is common.
Entergy Texas, Inc. owns and operates the poles, wires, and infrastructure that deliver electricity throughout Southeast Texas, including all Port Arthur zip codes — 77640, 77641, 77642, and 77643. As a regulated utility, ETX handles both electricity supply and delivery under one bundled bill. There is no separate TDSP delivery charge to compare across providers, as exists in deregulated markets. To report outages, manage your account, or inquire about rate assistance programs, contact Entergy Texas directly at entergytexas.com or 1-800-968-8243.
All Port Arthur zip codes — 77640, 77641, 77642, and 77643 — fall under the same Entergy Texas regulated framework, so neighbors across town face the same rate structure. While shopping for a better rate isn't an option, Port Arthur residents can still reduce their bills through Entergy Texas's energy efficiency programs, low-income bill assistance (LIHEAP), and budget billing options that smooth out seasonal cost spikes. Weatherization improvements, smart thermostats, and off-peak appliance use can meaningfully reduce consumption at 12.4¢/kWh.
Enroll in Entergy Texas's Budget Billing program to spread high summer cooling costs evenly across 12 months — Port Arthur's May-through-October heat regularly spikes bills by 40–60% above the winter average, making predictable payments a real financial relief.
Take advantage of Entergy Texas's appliance and HVAC efficiency rebates before replacing old equipment. Gulf Coast humidity means your air conditioner runs nearly year-round; upgrading to a high-SEER unit with a utility rebate can trim hundreds of dollars from your annual bill.
Seal attic penetrations and add blown-in insulation rated for humid climates — Port Arthur's extreme humidity accelerates moisture infiltration that degrades standard insulation, reducing its effectiveness and causing your cooling system to work harder than necessary.
Contact Entergy Texas to inquire about the Low-Income Home Energy Assistance Program (LIHEAP) and the company's own Helping Hands assistance fund. With Port Arthur's median household income well below the state average, these programs can provide meaningful bill relief for qualifying families.
No. Port Arthur's 77640 zip code is in a regulated utility territory served exclusively by Entergy Texas, Inc. Residents cannot select an alternative retail electric provider. Your electricity supply and delivery are managed entirely by ETX.
The average electricity rate in Port Arthur's 77640 zip code is approximately 12.4¢ per kilowatt-hour as of March 2026. This bundled rate covers both electricity supply and delivery through Entergy Texas, Inc.
Port Arthur's Gulf Coast climate drives heavy air conditioning use from June through September, significantly increasing monthly consumption. Even at 12.4¢/kWh, running AC continuously can push bills well above the monthly average. Efficiency upgrades help considerably.
Entergy Texas rates are reviewed and approved by the Public Utility Commission of Texas (PUCT). Unlike deregulated markets, ETX cannot change rates without formal regulatory approval, offering consumers some protection from sudden price increases.
Entergy Texas participates in LIHEAP (Low Income Home Energy Assistance Program), the Entergy Solutions low-income program, and offers budget billing to spread costs evenly. Jefferson County residents can apply through local community action agencies.
No. All Port Arthur zip codes — 77640, 77641, 77642, and 77643 — are served by Entergy Texas under the same regulated rate structure. There is no rate advantage to switching addresses within the Port Arthur service area.