Cooperative · South Carolina · EIA 11693
Marlboro Electric Coop, Inc
Cooperative · South Carolina. According to the U.S. Energy Information Administration's EIA Form 861, reliability for 2022 shows SAIDI 220 minutes/customer.
Reliability verdict
Marlboro Electric Coop, Inc shows above-average chronic reliability in 2022: 44 minutes SAIDI excluding major events (220 minutes including them).
- 220 min
- SAIDI 2022
- 1.10
- SAIFI 2022
- 44 min
- SAIDI ex-MED
Chronic reliability judged on SAIDI excluding major event days when reported (IEEE 1366). Source: EIA Form 861 · August 2026.
Signature read: mid-cohort SAIDI between the 96 and 258 minute tercile cuts.
What mid-pack Marlboro Electric Coop, Inc filings show
Marlboro Electric Coop, Inc is a member-owned electric cooperative operating in South Carolina under EIA identifier 11693. Customer count is not reported in the current EIA filing. 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 2022, the average Marlboro Electric Coop, Inc customer experienced 220.5 minutes of power interruptions, the industry-standard SAIDI metric (System Average Interruption Duration Index). Excluding major weather events from that total, that places this utility well below the 120–180 minute national benchmark, signaling strong grid hardening and fast restoration practices. The SAIFI figure, which tracks average outage events per customer, came in at 1.10 for the same period, meaning customers statistically saw about 1 distinct interruption that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 44.2 minutes, the gap between that figure and the headline 220.5 reveals how much weather, not day-to-day infrastructure, drove outages.
The EIA dataset includes 3 years of continuous reporting (2020–2022) for Marlboro Electric Coop, Inc, which lets you see whether reliability is trending up or down rather than judging from a single snapshot. Over that window, SAIDI moved from 956.0 down to 220.5 minutes, a trend worth noting for anyone weighing 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.
220 minutes per customer per year
Annual minutes without electric service (2022)
SAIDI by year (2020-2022)
Minutes per customer-year · EIA Form 861
Year-by-year SAIDI for Marlboro Electric Coop, Inc from the same EIA filings as the table below. Lower is better; major-event years can spike the headline figure.
Marlboro Electric Coop, Inc SAIDI trend
Marlboro 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
220 Around the middle fewer outage minutes than 39% 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
SAIDI 2022 breakdown: 220.5 minutes
Reliability Trend (2020–2022)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 956.0 | 211.2 | - | 6,529 |
| 2021 | 302.4 | 171.5 | - | 6,612 |
| 2022 | 220.5 | 44.2 | 1.097 | 6,645 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Frequently Asked Questions
How reliable is Marlboro Electric Coop, Inc?
Marlboro Electric Coop, Inc had a SAIDI of 220.5 minutes in 2022 including major weather events, but 44.2 minutes excluding them (the IEEE-standard day-to-day reliability measure, the difference points to a major storm that year rather than an ongoing problem). Leaving aside major weather events, that figure comes in under the national average, pointing to above-average reliability.
What type of utility is Marlboro Electric Coop, Inc?
Marlboro Electric Coop, Inc is classified as a Cooperative serving South Carolina.
How many customers does Marlboro Electric Coop, Inc serve?
Marlboro Electric Coop, Inc serves customers in South Carolina. Exact customer count data is not available in the current EIA filing.
How has Marlboro Electric Coop, Inc's reliability changed over time?
Marlboro Electric Coop, Inc has 3 years of reliability data (2020-2022). SAIDI has held roughly steady across these years. Review the trend table above for year-by-year detail.
Utility Profile
- Type
- Cooperative
- State
- South Carolina
- Customers
- -
- EIA ID
- 11693
Explore
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.