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Entergy Mississippi rate increase

Electric · Mississippi · Investor-owned utility · part of Entergy Corporation

In effect

Last checked

Entergy Mississippi's latest approved rate change took effect July 2026: 2026 formula rate plan filing (no base revenue change). See the details below for what the sources say about bill impacts.

Details and sources · Estimate for your home

Rate changes, newest first

2026 formula rate plan filing (no base revenue change)

Other · Electric

In effect

Typical residential bill

Not stated for a specific usage level. Any figures the sources give are in the summary below.

Filed
February 2026
Decided
June 2026
Effective
July 2026
Requested increase
Not disclosed
Approved increase
Not disclosed
Docket
2025-UN-112

Entergy Mississippi's 2026 formula rate plan filing showed earnings within the allowed band for both 2025 and 2026, so formula rate plan revenues did not change. A stipulation with the Public Utilities Staff, approved by the MPSC in June 2026 with rates effective July, added a small demand-side management true-up and set how nuclear tax credit proceeds will later reach customers.

Utility's stated reasons

  • projected 2026 and actual 2025 earnings within the formula's bandwidth
  • true-up of demand side management costs
Sources (3) · Verified against regulator or utility filings

Last verified Oct 19, 2026

Annual fuel (energy cost factor) reset, February 2026

Fuel / purchased power · Electric

In effect

Typical residential bill (1,000 kWh/month)

  • +$14.22/mostarting February 2026Entergy Mississippi's figure for a typical residential customer using 1,000 kWh; it puts the new bill at about $165 a month.
Filed
November 2025
Decided
January 2026
Effective
February 2026
Requested increase
Not disclosed
Approved increase
Not disclosed
Docket
Not disclosed

Entergy Mississippi's annual fuel reset, approved by the MPSC in January 2026, raised the typical 1,000 kWh residential bill by about $14.22 a month to roughly $165 from February 2026. The company cited higher projected gas prices and the end of a fuel credit that had cut bills by $8.36 a month in 2025.

Utility's stated reasons

  • higher projected natural gas prices
  • end of a fuel credit worth $8.36 a month during 2025
Sources (4) · Verified against regulator or utility filings

Last verified Oct 19, 2026

Data center generation cost recovery (interim facilities rate adjustment), 2026

Rider · Electric

In effect

Typical residential bill

Not stated for a specific usage level. Any figures the sources give are in the summary below.

Filed
November 2025
Decision expected
—
Effective
January 2026
Requested increase
$64.7 million
Approved increase
Not disclosed
Docket
Not disclosed

Under a 2024 state law, Entergy Mississippi recovers ownership costs of new plants built to serve data centers through interim rate adjustments. Its third annual report sought about $111.3M over 12 months from January 2026, $64.7M more than the year before. A Synapse study for Earthjustice and Environmental Advocates Mississippi estimates about +$10.60/month for households; Entergy disputes that.

Utility's stated reasons

  • construction costs of new gas plants serving data center load
  • 2024 state law allowing interim recovery before plants are in service
Sources (3) · Verified against regulator or utility filings

Last verified Oct 19, 2026

What it could mean for your bill

Sources state the impact for one typical home. Enter your own usage or bill for a rough estimate.

For: Annual fuel (energy cost factor) reset, February 2026 (in effect)

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Who decides

Utility website: www.entergymississippi.com

Related

Last checked Oct 19, 2026. Spotted something out of date? Tell us.