Cooperative South Carolina

Mid-Carolina Electric Coop Inc

137min
SAIDI 2023
1.63
SAIFI 2023
59,829
Customers

What This Utility Data Tells You

Mid-Carolina Electric Coop Inc is a member-owned electric cooperative operating in South Carolina under EIA identifier 12462. It reports service to approximately 59,829 customer accounts and generated about $0.14 billion in annual electric revenue, with a service footprint spanning 21 ZIP codes. As a cooperative, its governance is accountable to its ratepayer-members rather than shareholders, which often shapes rate-setting and reinvestment priorities.

In 2023, the average Mid-Carolina Electric Coop Inc customer experienced 137.1 minutes of power interruptions — a metric called SAIDI (System Average Interruption Duration Index). That sits within the 120–180 minute national benchmark range, indicating performance typical of U.S. distribution utilities. SAIFI — the average number of outage events per customer — was 1.63 for the same period, so customers statistically faced roughly 2 distinct interruptions that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 121.4 minutes — the gap between that figure and the headline 137.1 reveals how much weather, not day-to-day infrastructure, drove outages.

The EIA dataset includes 4 years of continuous reporting (2020–2023) for Mid-Carolina Electric Coop Inc, which lets you see whether reliability is trending up or down rather than judging from a single snapshot. SAIDI has improved from 194.9 to 137.1 minutes over that window — a meaningful direction for prospective customers and regulators watching capital investment outcomes. All figures on this page come directly from EIA Form 861, the federal annual electric power industry survey, with service territory ZIPs sourced from OpenEI — you can cross-reference them with your own utility bill or use them when comparing providers before relocating.

SAIDI

137 min per year

Average outage minutes (2023)

SAIFI

1.63 interruptions/yr

Outage frequency (2023)

Customers

59,829

Served in South Carolina

SAIDI vs. National Average (180 min) 34.3%

137 minutes per customer per year

Mid-Carolina Electric Coop Inc SAIDI

Minutes without power per year (2023)

137 SAIDI137 SAIDINat. avg 120120SAIDI137SAIDI

Average

Reliability Trend (2020–2023)

Year SAIDI (min) SAIDI nMED SAIFI Customers
2020 194.9 109.2 2.274 57,600
2021 135.1 94.7 2.134 58,371
2022 178.3 121.9 2.498 59,114
2023 137.1 121.4 1.631 59,690

SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.

Service Area

Mid-Carolina Electric Coop Inc serves 21 ZIP codes in South Carolina.

290062903629053290542906329070290722907329075291052910829112291232912729137291602916429170291722921029212

Frequently Asked Questions

How reliable is Mid-Carolina Electric Coop Inc?

Mid-Carolina Electric Coop Inc had a SAIDI of 137.1 minutes in 2023, meaning the average customer experienced about 137 minutes of outages that year. This is near the national average.

What type of utility is Mid-Carolina Electric Coop Inc?

Mid-Carolina Electric Coop Inc is classified as a Cooperative serving South Carolina. Electric cooperatives are member-owned nonprofit utilities, typically serving rural areas.

What does SAIDI mean for Mid-Carolina Electric Coop Inc?

SAIDI (System Average Interruption Duration Index) measures the average total minutes per year that a customer of Mid-Carolina Electric Coop Inc experiences power outages. A lower SAIDI indicates better reliability. The national average is roughly 120-180 minutes per year, so comparing Mid-Carolina Electric Coop Inc's SAIDI to that benchmark shows whether this utility is above or below average.

How many customers does Mid-Carolina Electric Coop Inc serve?

Mid-Carolina Electric Coop Inc serves approximately 59,829 customers in South Carolina. Customer count can affect reliability metrics because larger utilities may face different infrastructure challenges compared to smaller ones.

How has Mid-Carolina Electric Coop Inc's reliability changed over time?

Mid-Carolina Electric Coop Inc has 4 years of reliability data (2020-2023). SAIDI has remained relatively stable over this period. Review the trend table above for year-by-year detail.

What is SAIDI without major event days?

SAIDI "without major event days" (SAIDI nMED) excludes outages caused by hurricanes, ice storms, and other catastrophic weather events. It better reflects day-to-day infrastructure reliability rather than vulnerability to extreme weather. Both standard SAIDI and SAIDI nMED are shown in the reliability trend table above.

Utility Profile

Type
Cooperative
Customers
59,829
Annual Revenue
$0.14B
EIA ID
12462
Data Source: U.S. Energy Information Administration Form 861 annual electric power industry survey. ZIP service territory from OpenEI.

Related

Data sourced from official EIA reliability statistics and OpenEI utility rate database. See our methodology for details. Retrieved and formatted by PlainUtility Editorial

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the U.S. Energy Information Administration (EIA) Form 861. Consult a qualified professional before making decisions based on this data.