Cooperative · Mississippi · EIA 5578
East Mississippi Elec Pwr Assn
Cooperative · Mississippi · 13K customers. According to the U.S. Energy Information Administration's EIA Form 861, reliability for 2023 shows SAIDI 521 minutes/customer.
Reliability verdict
East Mississippi Elec Pwr Assn shows below-average chronic reliability in 2023: 438 minutes SAIDI excluding major events across 13K customers.
- 521 min
- SAIDI 2023
- 4.33
- SAIFI 2023
- 438 min
- SAIDI ex-MED
- 13K
- Customers
Chronic reliability judged on SAIDI excluding major event days when reported (IEEE 1366). Source: EIA Form 861 · August 2026.
Signature read: long interruption minutes vs the 911 utility cohort (>258 min tercile cut).
What long-outage East Mississippi Elec Pwr Assn filings show
East Mississippi Elec Pwr Assn is a member-owned electric cooperative operating in Mississippi under EIA identifier 5578. It reports service to approximately 13,208 customer accounts and generated about $0.03 billion in annual electric revenue, with a service footprint spanning 38 ZIP codes. Being member-owned, this cooperative answers to its ratepayers rather than outside shareholders, a structure that tends to influence how rate cases and capital spending get decided.
In 2023, the average East Mississippi Elec Pwr Assn customer experienced 521.4 minutes of power interruptions, a metric called SAIDI (System Average Interruption Duration Index). That is substantially above the 120–180 minute national benchmark, indicating either storm-prone geography, aging infrastructure, or extended restoration windows. SAIFI, the average number of outage events per customer, was 4.33 for the same period, so customers statistically faced roughly 4 distinct interruptions that year. Once major event days (hurricanes, ice storms) are excluded, SAIDI comes down to 438.3 minutes, and the spread against the headline 521.4 indicates how much weather, versus routine infrastructure, drove the outage total.
East Mississippi Elec Pwr Assn has 4 years of continuous EIA reporting on file (2020–2023), enough to read a real trend rather than a single-year snapshot. SAIDI climbed from 251.1 to 521.4 minutes over that window, a shift that can point to worsening weather exposure or delayed grid modernization.
Based on this utility's own EIA Form 861 reliability record -- baseline (major-event- excluded) outage duration, total outage duration, and outage frequency -- each benchmarked against every reporting utility nationwide. Not a measure of electricity rates or customer service, which this portal does not track.
521 minutes per customer per year
Minutes without power per year (2023)
SAIDI by year (2020-2023)
Minutes per customer-year · EIA Form 861
Year-by-year SAIDI for East Mississippi Elec Pwr Assn from the same EIA filings as the table below. Lower is better; major-event years can spike the headline figure.
East Mississippi Elec Pwr Assn SAIDI trend
East Mississippi Elec Pwr Assn vs the nationwide SAIDI distribution
Where this utility's headline SAIDI sits among every EIA Form 861 utility with a reported figure
521 Higher than most fewer outage minutes than 17% of 911 utilities
Utilities nationwide, banded by latest reported SAIDI (minutes)
Each bar is a band; taller bars hold more utilities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source U.S. EIA Form 861 reliability filings · August 2026
Price vs. reliability
Where East Mississippi Elec Pwr Assn sits on price vs. reliability
Among the 781 U.S. utilities large enough to report both revenue per customer and a recent outage record, East Mississippi Elec Pwr Assn charges more per customer than 31% of them, and is more reliable (lower SAIDI) than 19% of them, placing it in the quadrant where it pays less and is less reliable. Revenue per customer and outage minutes are independent figures: paying more does not guarantee fewer outages.
Revenue per customer: $2,237/year · Latest SAIDI: 521.4 minutes/year.
SAIDI 2023 breakdown: 521.4 minutes
Reliability Trend (2020–2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 251.1 | 193.2 | 2.130 | 12,645 |
| 2021 | 57.8 | 3.4 | 3.400 | 12,791 |
| 2022 | 53.1 | 3.2 | 2.495 | 13,075 |
| 2023 | 521.4 | 438.3 | 4.330 | 12,886 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Service Area
East Mississippi Elec Pwr Assn serves 38 ZIP codes in Mississippi.
Frequently Asked Questions
How reliable is East Mississippi Elec Pwr Assn?
East Mississippi Elec Pwr Assn had a SAIDI of 521.4 minutes in 2023. Excluding major weather events, this is above the national average, indicating below-average reliability.
What type of utility is East Mississippi Elec Pwr Assn?
East Mississippi Elec Pwr Assn is classified as a Cooperative serving Mississippi.
How many customers does East Mississippi Elec Pwr Assn serve?
East Mississippi Elec Pwr Assn serves approximately 13,208 customers in Mississippi.
How has East Mississippi Elec Pwr Assn's reliability changed over time?
East Mississippi Elec Pwr Assn has 4 years of reliability data (2020-2023). This utility's SAIDI has stayed fairly flat over the period. Review the trend table above for year-by-year detail.
Utility Profile
- Type
- Cooperative
- State
- Mississippi
- Customers
- 13,208
- Annual Revenue
- $0.03B
- EIA ID
- 5578
Explore
Utilities with similar EIA profiles
Two cross-state peer sets for East Mississippi Elec Pwr Assn. Same-state SAIDI neighbors stay in Read-with below; these neighborhoods are nearest other-state utilities with at least 10,000 reported customers.
Similar customer count
Nearest utilities by Form 861 customers (13K here), outside Mississippi.
Similar chronic SAIDI
Nearest utilities by latest SAIDI minutes (521.4 here), outside Mississippi, excluding the customer-peer set.
Source: U.S. Energy Information Administration Form 861 annual electric power industry survey · ZIP service territory: OpenEI. Disclaimer: informational only, not professional advice. See full disclaimer · methodology.