Entergy and the Gulf South: hurricanes shape everything
Entergy is the main electric utility for the lower Mississippi River region, serving 3 million customers across Arkansas, Louisiana, Mississippi and Texas through five operating subsidiaries. The territory is one of the most exposed in the U.S. to hurricanes and tropical storms, which makes resilience the central theme of the company's investment plan.
- The size of the Entergy network and the four states it covers
- Why power outages happen on the Entergy grid
- The state-by-state grid resilience plans approved in 2024 and 2025
- How Entergy is hardening transmission, expanding generation and using data center deals to lower customer costs
A four-state network from the Louisiana coast to the Arkansas hills
Entergy Corporation (NYSE: ETR) is headquartered in New Orleans and runs operations through five regulated subsidiaries: Entergy Arkansas, Entergy Louisiana, Entergy Mississippi, Entergy New Orleans and Entergy Texas. Each subsidiary has its own state regulator, but generation and transmission planning are coordinated at the corporate level.
- About 3 million electric customers across four states.
- Around 24,000 MW of generation capacity, including 5,000 MW of nuclear power, one of the cleanest large-scale fleets in the U.S.
- Entergy Louisiana serves 1.1 million customers in 58 parishes; Entergy Texas serves about 524,000 customers in 27 counties; Entergy Mississippi serves 459,000 customers in 45 counties; Entergy New Orleans serves about 208,000 customers in Orleans Parish.
- About 12,000 employees and roughly $10 billion in annual revenue.
Entergy operates within MISO South, the southern footprint of the Midcontinent Independent System Operator.
Why Hurricane Ida set off the longest restoration in Entergy's history
Entergy's territory sits in the heart of hurricane country and faces some of the most challenging weather conditions of any U.S. utility, with multiple major events in recent years.
Hurricanes and tropical storms
Hurricanes Laura (2020), Ida (2021) and Beryl (2024) all caused widespread, multi-week outages on the Entergy grid. Storm surge, sustained high winds and inland flooding regularly bring down transmission and distribution structures across the territory.
Winter storms and ice
Winter Storm Uri in February 2021 and the December 2018 cold snap exposed the limits of generation and transmission capacity in the region during extreme cold. Entergy is now coordinating with MISO on grid expansion to address those gaps.
Trees and vegetation
The Entergy footprint runs through dense Southern forests and bayous, where tree contact remains a major cause of unplanned power outages, especially during summer thunderstorms.
Aging infrastructure
Older transmission corridors and distribution circuits in the rural parts of the territory carry equipment that has not been modernized for decades. Replacing it is one of the explicit goals of the state-by-state resilience plans.
The $25 billion grid investment plan through 2028
Each Entergy subsidiary has filed and is now executing a multi-year grid resilience plan with its state regulator. The combined effort is one of the largest hurricane-focused grid hardening programs in the U.S.
Entergy resilience programs by state
Louisiana: Phase 1 plan approved by the LPSC, 2,100 projects targeting 69,000 distribution and transmission structures over four years.
New Orleans: Phase 1 approved by the City Council, 65 projects strengthening 3,096 structures and 63 line miles, $100 million over two years.
Texas: $200 million in grant funding plus the Southeast Texas Area Reliability Project (SETEX), with 9,000+ structures and 400 line miles to be hardened.
Mississippi: Superpower Mississippi, the largest grid upgrade in the company's history, increases reliability spending by 50% (~$300 million) over five years.
Across the four states: roughly $5 billion in projected customer savings over 20 years from data center deals (Meta, Google, Amazon, Avaio Digital, Hut 8).
A specific feature of Entergy's funding model is the use of large industrial customer agreements (notably with hyperscale data center operators) to offset the cost of resilience and reliability investments for residential customers, with no rate impact in many of the approved projects.
Transmission hardening, vegetation management and FORTS resilience
Stronger transmission structures
Entergy is replacing wooden poles, lattice towers and crossarms with steel and concrete structures designed to handle higher wind speeds. Hardening is concentrated on the transmission corridors that carry power to load centers and on distribution feeders along major hurricane paths.
MISO South transmission expansion
Within the Midcontinent grid operator, Entergy is now part of new long-range transmission planning that targets Louisiana load pockets, Southeast Texas and increasingly the rest of MISO South.
New generation: nuclear, gas, solar
The Louisiana package alone includes more than 2 GW of new natural gas generation and 1.5 GW of solar. Existing nuclear capacity (5,000 MW across the fleet) keeps providing baseload that is far less weather-sensitive than thermal or renewable assets.
Vegetation management
Multi-year vegetation cycles cover transmission and distribution corridors across the four states. Tree-related issues are still one of the biggest predictable causes of outages outside named storms.
Entergy ViewOutage app and the View My Power app
Entergy outage map and Storm Center
Entergy publishes a public outage map and a dedicated Storm Center website. Customers can search by address or zip code, see estimated restoration times and follow updates throughout an event.
Mobile app and alerts
The myEntergy mobile app gives access to the outage map, lets customers report a power outage and pushes proactive SMS, email and app notifications when service is interrupted.
Bill assistance
Each subsidiary participates in state-level low-income assistance programs, with help also provided through the The Power to Care fund and partnerships with non-profits.
Texas utilities and Gulf South ISPs
For a wider view of how the U.S. electric grid works and why outages happen, see the U.S. power outage page. Other utilities serving Texas include CenterPoint Energy in Houston and Oncor in North Texas. For internet outages across the same Gulf South footprint, the most common providers are AT&T, Spectrum and Xfinity.