Entergy Corporation

Snapshot

Entergy is a Southern US regulated utility serving roughly 3.1 million electric customers across Arkansas, Louisiana, Mississippi and Texas, with a wholesale and nuclear portfolio bolted on top. It matters now because its service territory sits on top of what the Gulf Coast petrochemical and the hyperscaler data-center booms both demand: cheap gas-fired baseload, a nuclear fleet already licensed into the 2040s, and the right-of-way to build. Entergy's management has turned that geography into one of the largest capex plans in the US utility sector — a four-year spending program that keeps climbing with every data-center signing. The market has rewarded it, with the stock trading at a persistent premium to the regulated-utility group.

Founding story

Entergy's lineage runs through Middle South Utilities, a holding company incorporated in 1949 that rolled up Arkansas Power & Light, Louisiana Power & Light, Mississippi Power & Light and New Orleans Public Service — the four operating companies that today still constitute most of its regulated earnings. Middle South rebranded as Entergy in 1989 after Louisiana regulators finished sorting out the fallout from Grand Gulf, a nuclear project whose cost overruns threatened the company's solvency through most of the 1980s. The current corporate shape dates from 1993, when Entergy acquired Gulf States Utilities and absorbed the Texas and remainder-Louisiana service territories.

The CEO is Drew Marsh, promoted from CFO in 2022 after Leo Denault's eleven-year run. Marsh is a lifer: he joined Entergy's finance group in 1998 after a stint at Arthur Andersen, took the controller job in 2006, became CFO in 2010 and ran investor relations through the 2010s build-out of the regulated plan. The board bet on continuity rather than external disruption, which is a reasonable read given how regulatorily specific the Entergy story is — a chief executive without decades inside the Public Service Commission dockets of Louisiana and Mississippi would be shadowboxing.

How it works

Four state-regulated operating companies — Entergy Arkansas, Entergy Louisiana, Entergy Mississippi and Entergy Texas — own the wires and most of the generation that serves their respective territories. Each files its own rate case with its own state commission and earns a return on the depreciated book value of its rate base plus allowed construction work in progress. New generation, transmission and distribution investments feed that rate base; electricity sales recover the depreciation, the operating expenses, the fuel and the allowed return. The holding company sits on top and allocates capital across the four.

Alongside the regulated utilities, Entergy owns a nuclear fleet — currently five operating reactors at four sites (Arkansas Nuclear One, Grand Gulf, Waterford 3 and River Bend) totalling roughly 5 GW of nameplate capacity. These are mostly inside the regulated operating companies, which means ratepayers bear the cost and the uplift when the fleet runs well. Entergy Wholesale Commodities, the merchant arm that at its peak owned reactors in New York and Massachusetts, was wound down through the back half of the 2010s and early 2020s as Indian Point, Pilgrim and Palisades retired.

Transmission is operated under MISO South, the sub-regional footprint of the Midcontinent Independent System Operator. MISO sets the day-ahead and real-time markets, handles the capacity auction and dispatches generation. Entergy still owns the wires but no longer runs the market.

Product and business overview

Three reporting lines drive the P&L. Utility is the regulated electric and gas business across the four states: it generates nearly all of operating earnings and almost all of the growth capex. Entergy Wholesale Commodities is a run-off bucket now limited to decommissioning Palisades and a handful of non-nuclear merchant assets. Parent & Other is the holding-company plug plus a small set of unregulated service-company businesses and tax items.

Within the Utility segment, the generation mix leans gas-heavy, with meaningful nuclear and growing solar. Entergy has publicly committed to a 2050 net-zero target. The physical reality is more pragmatic: the near-term build is combined-cycle gas, utility-scale solar, battery storage and transmission upgrades, with the nuclear fleet carried forward on 20-year license renewals. Coal is a shrinking footprint, concentrated in Arkansas and Mississippi.

Business model and pricing

Entergy earns a regulator-approved return on equity on the rate base of each operating company. ROEs vary by jurisdiction and settlement but typically land in the 9.5-10.5% range, with the actual earned return depending on how closely operating performance tracks the regulatory assumptions. Residential rates in Entergy Louisiana's territory were reportedly around 11-12 cents per kWh as of 2026, among the lowest in the US. Industrial rates are lower still, which is a core reason the Gulf Coast chemicals and LNG complex concentrates in Entergy's footprint.

The data-center flavoured variant of this model is the formula rate plan and large-load tariff: large hyperscaler customers sign long-dated contracts for firm capacity at a tariffed rate, usually with a minimum demand charge and a cost-recovery mechanism for the dedicated generation and transmission build. Entergy Louisiana's Meta agreement, announced in late 2024 and expanded in 2026, is the archetype: Entergy builds roughly 2.3 GW of new combined-cycle gas plus associated transmission; Meta commits to a 15-year capacity contract; the rate case layer passes net savings to residential ratepayers that regulators and consumer advocates continue to debate.

Traction over time

Year	Operating revenue	Customers (electric)	Capex
2020	$10.1B	~2.9M	~$5.9B
2022	$13.8B	~3.0M	~$6.2B
2024	$12.1B	~3.1M	~$7.0B
2026E	~$13-14B	~3.1M	~$9B (plan)

The headline numbers that matter are not the revenue line but the capital plan. In early 2024 Entergy's rolling four-year capex plan sat near $19 billion. Over 2024-2025 the company stepped it up to roughly $37 billion through 2028 as the Meta deal and the broader Louisiana industrial pipeline firmed. In 2026 management added another $14 billion to the four-year plan, bringing the total toward $51 billion, and signalled further increases if additional data-center signings close (Utility Dive, March 2026). On conference calls Marsh has repeatedly pointed to 6-8% annual rate-base growth as the base case and 8-10% as the stretch case.

Market analysis

The regulated electric utility industry in Entergy's footprint is a quasi-monopoly: competition exists only in generation at the wholesale level under MISO, not in the delivery of electricity to end customers. The TAM is set by rate-base growth, which in turn is set by load growth and allowed returns. For Entergy's four-state region, S&P Global and the EIA both pegged load growth at historically-flat 0.5-1% through most of the 2010s. Data centers, LNG terminal electrification and reshored US manufacturing have broken that trend: the Southwest Power Pool and MISO South now forecast load growth of 2-4% annually through 2030, with Louisiana and Texas particularly exposed. The structural shift is less "AI" than it is a durable change in the industrial mix — chemicals, LNG, EV battery and auto assembly are each electrifying a step function of previously gas- or oil-fired processes.

Competitive intel

Entergy does not compete head-to-head for retail customers in its service territory, so the competitive set is really capital markets, regulators and large-load siting decisions.

• Southern Company (NYSE:SO, ~$95B market cap as of October 2026). The scaled Southeast peer, with similar nuclear exposure (Vogtle) and overlapping investor base. Attacks: comparison on rate-base growth and dividend predictability.
• NextEra Energy (NYSE:NEE, ~$150B+). Florida regulated utility plus the largest renewables developer in the US. Attacks: lower perceived carbon risk, bigger clean-energy backlog, higher valuation multiple.
• American Electric Power (NYSE:AEP). Overlaps in MISO and PJM. Attacks: scale advantage in transmission.
• Duke Energy (NYSE:DUK). Nuclear fleet, Southeast footprint, large data-center pipeline in the Carolinas.
• Independent power producers (Vistra, Constellation, Talen). For large-load siting decisions where a merchant generator can offer behind-the-meter nuclear or gas off its existing fleet, the IPPs are the real alternative to the Entergy integrated-resource plan.
• CenterPoint Energy (NYSE:CNP). Overlaps in Texas gas distribution and parts of the retail footprint.

The regulatory counterparty — the Louisiana Public Service Commission, the Arkansas PSC, the Mississippi PSC and the Texas PUC — is in some ways the most important external force. Entergy's returns and growth cadence hinge more on commission decisions than on competitive dynamics.

History and evolution

1949. Middle South Utilities incorporated. 1980s. Grand Gulf nuclear cost overruns trigger a prolonged rate dispute in Louisiana and Mississippi; the holding company narrowly avoids restructuring. 1989. Middle South rebrands as Entergy. 1993. Entergy acquires Gulf States Utilities, adding Texas and additional Louisiana territory. 2000s. Entergy builds its merchant nuclear portfolio in the Northeast, acquiring reactors from utilities that no longer wanted the regulatory risk. 2015-2022. Entergy winds down its merchant business, closing or selling Vermont Yankee, Pilgrim, Indian Point and Palisades. The strategic bet becomes regulated-only. 2022. Drew Marsh succeeds Leo Denault as CEO. 2023. Entergy and Meta announce the first Louisiana data-center capacity agreement, triggering the formal re-rating of the four-year capital plan. 2026. Capital plan grows past $50B; management reiterates 6-8% rate-base growth and signals further upward revisions tied to additional large-load pipeline conversions (TD World, 2026).

What people say

The case for. Analyst notes from Mizuho, Morgan Stanley and Guggenheim have anchored around rate-base growth and the Meta signing as a template that can be re-run with Amazon, Microsoft, Google and potentially new chemicals customers. Investors like the fact that Entergy owns the nuclear fleet inside the regulated structure rather than exposed to merchant power markets, which gives it a steady return on the five reactors rather than mark-to-market earnings volatility. Credit rating agencies have been constructive, with S&P maintaining investment-grade ratings and noting constructive regulatory relationships in Mississippi and Arkansas.

The complaints. Consumer advocates and some elected officials in Louisiana have pushed back on the net-benefit math behind the Meta deal, arguing the savings calculations rely on counterfactuals that regulators cannot verify and that the capex adds to the embedded rate base residential customers eventually pay for (Fox 8 Live, March 2026; American Press, 2026). The company's reliability record in southeast Louisiana during hurricane season has drawn repeated criticism; Entergy New Orleans in particular has faced scrutiny over post-Ida restoration. Short-tenure employees on Glassdoor flag slow decision-making and bureaucratic layers, which is standard incumbent-utility noise but matters when a $50B capital plan requires executional pace.

Outlook: well positioned or at risk?

Well-positioned. Entergy is the right balance sheet in the right geography at the right time: a regulated monopoly over a service territory where load growth has structurally re-rated, with constructive-to-neutral regulators and a nuclear fleet whose economics look better every year the data-center hyperscalers come looking for firm, low-carbon megawatts. The genuine downside risk is not competition. It is political: a Louisiana regulatory pushback that caps the pace of large-load tariffs, a hurricane-season reliability failure that erodes commission goodwill, or a cost overrun on one of the gas or transmission builds that forces a disallowance. None of those are tail risks, but each is manageable at the current scale of the capital plan.

How to attack it

A direct attack on the regulated-utility is impossible — the monopoly is granted by statute. The attackable surface is the large-load siting decision. A new entrant can route around Entergy by offering hyperscalers behind-the-meter power from merchant assets, co-located nuclear SMRs, or new natural-gas peakers that interconnect directly to the data-center campus and net-meter the surplus into MISO. Vistra and Talen have already prototyped this with Amazon and Microsoft at Pennsylvania nuclear sites. The specific wedge is speed: Entergy's integrated-resource-plan process takes years; a merchant developer with existing interconnect queue positions and dispatchable gas assets can promise commercial operations 18-30 months faster.

The other attackable layer is Entergy's weakest, most undercapitalised business: the retail electric and gas service. In Texas, where retail is unbundled, a specialised data-center-focused retail electric provider can wrap Entergy's distribution service into a product that bundles capacity, settlement and demand-response — a thin layer, but one Entergy has shown little interest in building itself. Finally, Entergy's hurricane-season reliability track record is a demonstrable weakness in southeast Louisiana; a distributed-generation and microgrid vendor (Base Power, Sunrun, EnergyHub, dedicated utility-scale battery developers) can pitch directly to commercial and industrial customers who have lost confidence in the grid, bypassing Entergy on the resilience sale while still consuming grid power on blue-sky days.

Adjacent-segment play

The core capability is a regulated balance sheet plus a nuclear operating license. That bundle does not easily repackage downstream, because the regulatory wrapper is state-specific. Where it does extend is upstream: Entergy's nuclear operations team is one of a handful in the US with the licensed know-how to operate PWRs and BWRs at commercial scale. If small modular reactors become real this decade, the operator of record for an SMR fleet is more likely a legacy nuclear utility than a new company — Entergy has already signalled interest in SMR siting on existing nuclear real estate. A second adjacent play is industrial power services: Entergy's affiliate Entergy Services already does engineering and construction management across the fleet; a captive services arm could expand into third-party industrial O&M and interconnection consulting, competing with Burns & McDonnell and Sargent & Lundy on grid-interconnect work. Neither is a trillion-dollar market, but both are consistent with the embedded capability. The segments that will not generalise: competitive retail (Entergy has no retail brand), international (regulatory expertise does not travel), and demand-side energy services (NextEra Energy Services and the Big Three home-services majors already own that lane).

Sources and further reading

• Entergy, 2025 10-K, SEC — rate base, segment detail, nuclear fleet.
• Utility Dive, New generation adds $12B to Entergy capital plan, 2026.
• T&D World, Entergy boosts four-year capex plan by $14B on back of Meta deal, 2026.
• Fox 8 Live, Entergy Louisiana's claim customers will save thanks to Meta deal greeted with some skepticism, March 2026.
• Nasdaq, Entergy Louisiana expand data center agreement Meta, 2026.
• Insider Monkey, Entergy Louisiana Q1 2026 Earnings Call Transcript, 2026.
• Yahoo Finance, Entergy Rallies 6.8% on Meta Deal, 2026.