SAIDI
220 min per year
Mean outage duration per year (2022)
What This Utility Data Tells You
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.
SAIFI
1.10 interruptions/yr
Events per customer (2022)
Customers
N/A
Served in South Carolina
SAIDI vs. National Average (180 min) 55.1%
220 minutes per customer per year
Annual minutes without electric service (2022)
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
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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.
Every figure on PlainUtility is rendered directly from the U.S. Energy Information Administration's Form 861 reliability data, no number is typed in by an editor. This utility's SAIDI/SAIFI figures are rendered directly from EIA Form 861 reliability files. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2020-2023.