Cooperative · South Carolina · EIA 5644
Edisto Electric Coop, Inc
Cooperative · South Carolina · 21K customers. According to the U.S. Energy Information Administration's EIA Form 861, reliability for 2023 shows SAIDI 453 minutes/customer.
Reliability verdict
Edisto Electric Coop, Inc shows below-average chronic reliability in 2023: 337 minutes SAIDI excluding major events across 21K customers.
- 453 min
- SAIDI 2023
- 337 min
- SAIDI ex-MED
- 21K
- 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 Edisto Electric Coop, Inc filings show
Edisto Electric Coop, Inc is a member-owned electric cooperative operating in South Carolina under EIA identifier 5644. It reports service to approximately 21,121 customer accounts and generated about $0.05 billion in annual electric revenue, with a service footprint spanning 37 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 Edisto Electric Coop, Inc customer experienced 453.3 minutes of power interruptions, the industry-standard SAIDI metric (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. Excluding major event days (hurricanes, ice storms), SAIDI drops to 336.6 minutes, the gap between that figure and the headline 453.3 reveals how much weather, not day-to-day infrastructure, drove outages.
The EIA dataset includes 4 years of continuous reporting (2020–2023) for Edisto Electric Coop, Inc, which lets you see whether reliability is trending up or down rather than judging from a single snapshot. SAIDI dropped from 646.7 to 453.3 minutes across that span, a direction regulators and prospective customers tend to watch closely.
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.
453 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 Edisto Electric Coop, Inc from the same EIA filings as the table below. Lower is better; major-event years can spike the headline figure.
Edisto Electric Coop, Inc SAIDI trend
Edisto Electric Coop, Inc vs the nationwide SAIDI distribution
Where this utility's headline SAIDI sits among every EIA Form 861 utility with a reported figure
453 Higher than most fewer outage minutes than 19% 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 Edisto Electric Coop, Inc sits on price vs. reliability
Among the 781 U.S. utilities large enough to report both revenue per customer and a recent outage record, Edisto Electric Coop, Inc charges more per customer than 53% of them, and is more reliable (lower SAIDI) than 22% of them, placing it in the quadrant where it pays more but is LESS reliable, a premium price without a reliability payoff. Revenue per customer and outage minutes are independent figures: paying more does not guarantee fewer outages.
Revenue per customer: $2,595/year · Latest SAIDI: 453.3 minutes/year.
SAIDI 2023 breakdown: 453.3 minutes
Reliability Trend (2020–2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 646.7 | 222.7 | - | 20,372 |
| 2021 | 180.2 | 180.2 | - | 20,699 |
| 2022 | 839.0 | 295.2 | - | 20,857 |
| 2023 | 453.3 | 336.6 | - | 21,121 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Service Area
Edisto Electric Coop, Inc serves 37 ZIP codes in South Carolina.
Frequently Asked Questions
How reliable is Edisto Electric Coop, Inc?
Edisto Electric Coop, Inc had a SAIDI of 453.3 minutes in 2023. Excluding major storm impacts, this trails the national average, indicating below-average reliability.
What type of utility is Edisto Electric Coop, Inc?
Edisto Electric Coop, Inc is classified as a Cooperative serving South Carolina.
How many customers does Edisto Electric Coop, Inc serve?
Edisto Electric Coop, Inc serves approximately 21,121 customers in South Carolina.
How has Edisto Electric Coop, Inc's reliability changed over time?
Edisto Electric Coop, Inc 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
- South Carolina
- Customers
- 21,121
- Annual Revenue
- $0.05B
- EIA ID
- 5644
Explore
Utilities with similar EIA profiles
Two cross-state peer sets for Edisto Electric Coop, Inc. 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 (21K here), outside South Carolina.
Similar chronic SAIDI
Nearest utilities by latest SAIDI minutes (453.3 here), outside South Carolina, 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.