Mississippi has a small October 2026 item, and it is a decrease. Entergy Mississippi asked regulators to lower a typical bill by about 41 cents a month. Earlier in the summer, its annual rate plan left rates flat.
This article covers Entergy Mississippi, which serves about 459,000 customers in 45 counties. It does not cover Mississippi Power, TVA-served areas or cooperatives.
Quick Summary
| Item | Timing | Residential impact |
|---|---|---|
| Annual formula rate plan | July 2026 billing cycle | No increase; $4.87 a month avoided, per Entergy |
| Ad valorem tax adjustment | Filed for October 2026 | About −$0.41 a month |
The July 2026 Rate Plan
Entergy Mississippi’s rates are reviewed every year under a formula rate plan. For 2026, Entergy says the Mississippi Public Service Commission approved a plan that prevented a $4.87 monthly increase that would otherwise have started in July.
The company attributes that to revenue from data center customers. It says about $18 million of a $300 million reliability program is included in the plan.
The October Filing
In a news release dated August 27, 2026, Entergy said it had filed an additional reduction of about $0.41 a month that would take effect in October if approved. It relates to the ad valorem (property) tax adjustment. We found no report of the commission’s vote. In an earlier year, the same adjustment lowered a typical 1,000 kWh bill by 29 cents.
What to Keep in Mind
- These figures come from Entergy’s own announcement.
- “Avoided increase” is a comparison with what would have happened, not a cut to your bill.
- Fuel costs are recovered separately and change through the year.
- Entergy plans three new natural gas plants with more than 2,100 megawatts of capacity. Their costs will reach rates in later years.
What This Means for Homeowners With Solar
We did not verify Mississippi’s current net metering or export credit rules for this article, so we give no export rates here. Ask your utility for its current solar tariff, and check how exported energy is credited before sizing a system. Fixed monthly charges are not reduced by solar.
Our solar payback guide shows how the retail rate and the export credit change the math.
What to Check on Your Bill
- The customer charge.
- The fuel line.
- The ad valorem tax adjustment on your October bill.
For help sorting the lines on your bill, see our guide to reading your electric bill.
Limitations
This article relies mainly on an Entergy news release. We did not open Public Service Commission orders or confirm the October decision. Mississippi Power’s rates were not researched.
Sources
- Entergy, “First benefits from data centers appear in Entergy Mississippi customer bills, eliminating nearly $5 monthly increase,” 2026
- Citizen Portal, “PSC approves Entergy Mississippi ad valorem tax adjustment; typical 1,000 kWh bill falls 29¢”
Frequently asked questions
Did Mississippi electric rates change on October 1, 2026?
Entergy Mississippi said on August 27, 2026 that it had filed for a reduction of about $0.41 a month for October. When we checked on October 4, we found no report of the Public Service Commission's decision.
Did Entergy Mississippi raise rates in 2026?
Entergy says its annual rate plan, effective with the July 2026 billing cycle, prevented a $4.87 monthly increase that would otherwise have occurred.
How did data centers lower bills?
Entergy says revenue from large data center customers offset costs that would otherwise have been added to other customers' bills. That is the company's description, and we did not verify the accounting.
