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Your electricity in zip code 77643 is delivered by Entergy Texas, Inc.. This area is served by a regulated utility.
Port Arthur's 77643 zip code is served exclusively by Entergy Texas, Inc. (ETX), a regulated utility operating in Southeast Texas's Jefferson County. Unlike deregulated parts of Texas where residents shop among competing retail providers, households and businesses in 77643 receive electricity directly from Entergy Texas at state-regulated rates — currently averaging 12.4¢/kWh as of March 2026. Jefferson County is home to a significant petrochemical and refining workforce, and with a median household income of $35,424 across Port Arthur's 56,039 residents, managing monthly electricity costs is a genuine priority. While provider shopping isn't an option here, understanding your rate structure, utility programs, and efficiency opportunities can still make a meaningful difference on your bill.
As of March 2026, the average electricity rate for 77643 residents is 12.4¢/kWh, set and regulated by the Public Utility Commission of Texas (PUCT) in coordination with Entergy Texas. Because this is a regulated market, there is no rate range driven by provider competition — your rate is determined by Entergy Texas's approved tariff structure, which includes generation costs, fuel adjustments, and infrastructure recovery charges. Fuel cost adjustments, particularly tied to natural gas prices, can cause your effective rate to fluctuate slightly month to month even within the regulated framework.
In a regulated utility territory like 77643, traditional contract length comparisons — the kind you'd make in a deregulated market — don't apply. Entergy Texas customers are billed on standard residential tariffs rather than fixed-term retail contracts. However, Entergy Texas does offer budget billing programs that spread your annual electricity cost into equal monthly payments, which can be a valuable tool for households trying to avoid high summer bills during Southeast Texas's intense cooling season. Enrolling in budget billing effectively gives you cost predictability similar to what a fixed-rate contract provides in a deregulated market.
Because 77643 falls within Entergy Texas's regulated service territory, there are no competing retail electricity providers (REPs) available to residential customers. This distinguishes Port Arthur's 77643, 77640, 77641, and 77642 zip codes from deregulated areas of Texas — such as Houston (served by CenterPoint Energy's territory) — where dozens of providers like Reliant, TXU Energy, Gexa Energy, Green Mountain Energy, and Constellation compete for customers. Port Arthur residents cannot access those competitive markets.
Entergy Texas, Inc. is the sole electric utility serving 77643. As a vertically integrated regulated utility, ETX handles generation, transmission, and distribution under rates approved by the PUCT. There are no separate delivery charges to compare across providers, since the utility structure is all-in. To inquire about your rate class, apply for assistance programs, or report outages, contact Entergy Texas directly at 1-800-ENTERGY or through entergytexas.com.
Port Arthur's neighboring zip codes — 77640, 77641, and 77642 — are all served by Entergy Texas under the same regulated rate structure, so there is no rate advantage to be found by comparing across Port Arthur zip codes. Compared to deregulated Texas cities, Port Arthur residents have less pricing flexibility but also less exposure to volatile spot-market electricity rates. Southeast Texas's hot, humid summers drive significant air conditioning demand from June through September, making energy efficiency investments — insulation, smart thermostats, and HVAC maintenance — the most impactful tools available to 77643 residents looking to reduce their monthly electricity costs.
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.
Port Arthur's 77643 zip code is in Entergy Texas's regulated service territory. Texas only deregulated portions of its electric grid — areas served by regulated utilities like Entergy Texas were excluded from the competitive retail market established in 2002.
The average rate for 77643 residents is approximately 12.4¢/kWh as of March 2026. This rate is set through Entergy Texas's PUCT-approved tariff and may include fuel cost adjustments that fluctuate monthly based on natural gas prices.
Focus on energy efficiency: upgrade insulation, install a programmable or smart thermostat, service your HVAC annually, and use high-draw appliances during cooler morning hours. Also ask Entergy Texas about budget billing and low-income assistance programs like LIHEAP.
Yes. Entergy Texas participates in the federally funded LIHEAP program and offers its own customer assistance programs for qualifying low-income households. Contact Entergy Texas at 1-800-ENTERGY or visit entergytexas.com to check eligibility and apply.
All major Port Arthur zip codes — 77640, 77641, 77642, and 77643 — are served by Entergy Texas under the same regulated rate structure. None of these zip codes have access to competitive retail electricity providers.
Yes, especially in Southeast Texas where summer cooling costs can spike sharply. Entergy Texas's budget billing program averages your annual usage into equal monthly payments, helping households on fixed or limited incomes avoid large, unpredictable summer electricity bills.