Mississippi power outages by utility

12 Mississippi utilities report outage minutes to EIA. The state median is 240 minutes a year; the range runs from 30 to 1750.

Ranking by outage minutes

Mississippi, SAIDI without major event days, 2024; lower is better; 12 utilities.

Rank	Mississippi utility	Owner type	Mississippi home accounts	SAIDI min	Interruptions (SAIFI)	SAIDI with storms	Mississippi storm share	Price ¢/kWh
1	City of Columbus	Municipal	8,842	30	0.48	53	44%	12.01
2	City of Oxford	Municipal	8,502	35	0.72	47	25%	11.62
3	Mississippi Power Co	Investor Owned	157,437	82	0.91	124	34%	14.47
4	Coast Electric Power Assn	Cooperative	82,510	103	1.41	277	63%	13.81
5	Singing River Elec Cooperative	Cooperative	72,343	169	No data	243	30%	13.46
6	Pearl River Valley El Pwr Assn	Cooperative	52,077	238	2.91	372	36%	14.25
7	Northcentral Mississippi E P A	Cooperative	29,136	241	2.09	241	0%	12.52
8	Southern Pine Electric Cooperative	Cooperative	65,176	321	4.48	1003	68%	14.01
9	Entergy Mississippi LLC	Investor Owned	384,611	332	1.75	692	52%	13.21
10	Delta Electric Power Assn	Cooperative	20,460	419	4.11	722	42%	13.75
11	East Mississippi Elec Pwr Assn	Cooperative	9,885	468	2.81	663	29%	14.26
12	Southwest Mississippi E P A	Cooperative	23,153	1750	No data	3672	52%	15.03

Mississippi outage minutes by owner type

In Mississippi, 68% of 1,340,459 home accounts sit with the 12 qualifying utilities out of 40 in the file. Mississippi customer-weighted SAIDI is 280 minutes against a median of 240, and 9 of 12 Mississippi utilities exceed the U.S. median of 99. Counting major event days adds a median 39% to SAIDI.

Mississippi owner type	Mississippi utilities	Mississippi home accounts	Mississippi median SAIDI	Mississippi weighted SAIDI	Mississippi median SAIFI	Mississippi storm share	Mississippi median price ¢/kWh
Investor Owned	2	542,048	207	259	1.33	43%	13.84
Cooperative	8	354,740	281	324	2.86	39%	13.91
Municipal	2	17,344	33	33	0.60	34%	11.82

By owner type, Municipal utilities have the lowest median SAIDI in Mississippi (33 minutes, 2 of 12) and Cooperative the highest (281 minutes, 8 of 12).

Mississippi utilities that stand out

Why it stands out	Mississippi utility	Mississippi owner type	Mississippi accounts	Mississippi SAIDI min	Mississippi SAIDI rank	Mississippi SAIFI	Mississippi SAIDI with storms	Mississippi price ¢/kWh	Mississippi price rank
the most reliable	City of Columbus	Municipal	8,842	30	1 of 12	0.48	53	12.01	2 of 12
the least reliable	Southwest Mississippi E P A	Cooperative	23,153	1750	12 of 12	No data	3,672	15.03	12 of 12
the largest	Entergy Mississippi LLC	Investor Owned	384,611	332	9 of 12	1.75	692	13.21	4 of 12
the most storm-driven	Southern Pine Electric Cooperative	Cooperative	65,176	321	8 of 12	4.48	1,003	14.01	8 of 12
the most improved	East Mississippi Elec Pwr Assn	Cooperative	9,885	468	11 of 12	2.81	663	14.26	10 of 12
the one that slipped most	Pearl River Valley El Pwr Assn	Cooperative	52,077	238	6 of 12	2.91	372	14.25	9 of 12
the cheapest	City of Oxford	Municipal	8,502	35	2 of 12	0.72	47	11.62	1 of 12

Does a higher price buy fewer outages?

Each dot is one of 12 Mississippi utilities.

Mississippi, 2024: first 8 of 12 rows

	Home price, cents per kWh	SAIDI, minutes a year
City of Columbus	12.01	30
City of Oxford	11.62	35
Mississippi Power Co	14.47	82
Coast Electric Power Assn	13.81	103
Singing River Elec Cooperative	13.46	169
Pearl River Valley El Pwr Assn	14.25	238
Northcentral Mississippi E P A	12.52	241
Southern Pine Electric Cooperative	14.01	321

12 rows from EIA-861 survey.

CSV

Mississippi utilities, change in their own SAIDI

First to last year each utility reported, best change first.

Rank	Mississippi utility	Mississippi years	Mississippi SAIDI first	Mississippi SAIDI last	Mississippi change
1	East Mississippi Elec Pwr Assn	2015 to 2025	128	5	-96%
2	Singing River Elec Cooperative	2015 to 2025	165	156	-5%
3	Mississippi Power Co	2016 to 2025	76	76	+0%
4	Delta Electric Power Assn	2015 to 2024	355	419	+18%
5	Northcentral Mississippi E P A	2015 to 2024	198	241	+22%
6	City of Columbus	2017 to 2024	22	30	+38%
7	Southern Pine Electric Cooperative	2023 to 2025	317	446	+41%
8	Entergy Mississippi LLC	2015 to 2025	252	410	+63%
9	Coast Electric Power Assn	2015 to 2025	41	83	+101%
10	Southwest Mississippi E P A	2015 to 2025	860	1832	+113%
11	Pearl River Valley El Pwr Assn	2015 to 2025	118	261	+121%

Analyst note

The Mississippi median of 240 minutes ranks 1 of 40 states from the worst. Of 12 Mississippi utilities with 1,000+ home accounts that report SAIDI, City of Columbus is lowest at 30 minutes a year and Southwest Mississippi E P A highest at 1750, a 58.6 to 1 spread. The state median is 240 minutes, +141% against the U.S. median reporter. Over each utility's own record, East Mississippi Elec Pwr Assn improved most (128 to 5 minutes, -96%, 2015 to 2025) and Pearl River Valley El Pwr Assn changed the other way (118 to 261, +121%); 2 of 11 fell. Home price and outage minutes line up at r = +0.57 across 12 Mississippi utilities: the pricier ones report more minutes. That is Mississippi's pattern, not a cause.

Questions on Mississippi outages

Is Mississippi outage time high or low?

Median 240 minutes, rank 1 of 40 states from the worst; customer-weighted 280.

Which Mississippi utility has the fewest outage minutes?

City of Columbus: 30 minutes a year, SAIDI without major events, 2024.

Which Mississippi utility has the most?

Southwest Mississippi E P A: 1750 minutes a year in 2024.

What is the typical SAIDI in Mississippi?

The median of 12 reporting utilities is 240 minutes, +141% on the U.S. median reporter.

Do cheaper Mississippi utilities have more outages?

Across 12 utilities r = +0.57, so the link is positive: higher price goes with more outage minutes.

How much of Mississippi outage time comes from storms?

At Southern Pine Electric Cooperative 68% of all-event SAIDI is major event days.

How reliable is the largest Mississippi utility?

Entergy Mississippi LLC serves 384,611 home accounts and reports 332 minutes, rank 9 of 12; weighted by customers the state figure is 280.

Do Mississippi co-ops and investor-owned utilities differ?

3 owner types report in Mississippi: Municipal 2 utilities with 17,344 home accounts, Investor Owned 2 utilities with 542,048 home accounts, Cooperative 8 utilities with 354,740 home accounts.

What share of Mississippi home accounts do these utilities serve?

68% of 1,340,459 accounts, 12 of 40 utilities; 9 are above the U.S. median of 99 minutes.