Cooperative · Mississippi · EIA 17683
Southwest Mississippi E P A
Cooperative · Mississippi · 25K customers. According to the U.S. Energy Information Administration's EIA Form 861, reliability for 2023 shows SAIDI 2256 minutes/customer.
Reliability verdict
Southwest Mississippi E P A shows below-average chronic reliability in 2023: 1303 minutes SAIDI excluding major events across 25K customers.
- 2256 min
- SAIDI 2023
- 1303 min
- SAIDI ex-MED
- 25K
- 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 Southwest Mississippi E P A filings show
Southwest Mississippi E P A is a member-owned electric cooperative operating in Mississippi under EIA identifier 17683. It reports service to approximately 25,440 customer accounts and generated about $0.06 billion in annual electric revenue, with a service footprint spanning 23 ZIP codes. Cooperative ownership means the utility is run for the benefit of the ratepayer-members who elect its board, rather than for shareholder returns, which can shift how rate and investment decisions get made.
In 2023, the average Southwest Mississippi E P A customer experienced 2255.5 minutes of power interruptions, a measure known as SAIDI, or System Average Interruption Duration Index. That exceeds the 120–180 minute national benchmark by a wide margin, a pattern often tied to severe weather exposure, older infrastructure, or longer repair windows. Strip out major event days (hurricanes, ice storms) and SAIDI falls to 1303.2 minutes; the difference from the headline 2255.5 shows how much of the outage total came from weather rather than everyday grid issues.
The EIA dataset includes 4 years of continuous reporting (2020–2023) for Southwest Mississippi E P A, which lets you see whether reliability is trending up or down rather than judging from a single snapshot. SAIDI has improved from 4811.2 to 2255.5 minutes over that window, a meaningful direction for prospective customers and regulators watching capital investment outcomes.
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.
2256 outage minutes per customer annually
Power-out minutes per year (2023)
SAIDI by year (2020-2023)
Minutes per customer-year · EIA Form 861
Year-by-year SAIDI for Southwest Mississippi E P A from the same EIA filings as the table below. Lower is better; major-event years can spike the headline figure.
Southwest Mississippi E P A SAIDI trend
Southwest Mississippi E P A vs the nationwide SAIDI distribution
Where this utility's headline SAIDI sits among every EIA Form 861 utility with a reported figure
2,256 Higher than most fewer outage minutes than 2% 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 Southwest Mississippi E P A sits on price vs. reliability
Among the 781 U.S. utilities large enough to report both revenue per customer and a recent outage record, Southwest Mississippi E P A charges more per customer than 39% of them, and is more reliable (lower SAIDI) than 2% 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: $2,352/year · Latest SAIDI: 2255.5 minutes/year.
SAIDI 2023 breakdown: 2255.5 minutes
Reliability Trend (2020–2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 4811.2 | 1353.2 | - | 25,397 |
| 2021 | 6506.1 | 1229.9 | - | 25,555 |
| 2022 | 1812.3 | 1553.7 | - | 25,551 |
| 2023 | 2255.5 | 1303.2 | - | 25,440 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Service Area
Southwest Mississippi E P A serves 23 ZIP codes in Mississippi.
Frequently Asked Questions
How reliable is Southwest Mississippi E P A?
Southwest Mississippi E P A had a SAIDI of 2255.5 minutes in 2023. Leaving aside major weather events, that figure runs above the national average, pointing to below-average reliability.
What type of utility is Southwest Mississippi E P A?
Southwest Mississippi E P A is classified as a Cooperative serving Mississippi.
How many customers does Southwest Mississippi E P A serve?
Southwest Mississippi E P A serves approximately 25,440 customers in Mississippi.
How has Southwest Mississippi E P A's reliability changed over time?
Southwest Mississippi E P A 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
- 25,440
- Annual Revenue
- $0.06B
- EIA ID
- 17683
Explore
Utilities with similar EIA profiles
Two cross-state peer sets for Southwest Mississippi E P A. 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 (25K here), outside Mississippi.
Similar chronic SAIDI
Nearest utilities by latest SAIDI minutes (2255.5 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.