Cooperative · Tennessee · EIA 12470
Middle Tennessee E M C
Cooperative · Tennessee · 335K customers. According to the U.S. Energy Information Administration's EIA Form 861, reliability for 2023 shows SAIDI 74 minutes/customer.
Reliability verdict
Middle Tennessee E M C shows above-average chronic reliability in 2023: 51 minutes SAIDI excluding major events across 335K customers.
- 74 min
- SAIDI 2023
- 1.13
- SAIFI 2023
- 51 min
- SAIDI ex-MED
- 335K
- Customers
Chronic reliability judged on SAIDI excluding major event days when reported (IEEE 1366). Source: EIA Form 861 · August 2026.
Signature read: short interruption minutes vs the 911 utility cohort (≤96 min tercile cut).
What short-outage Middle Tennessee E M C filings show
Middle Tennessee E M C is a member-owned electric cooperative operating in Tennessee under EIA identifier 12470. It reports service to approximately 334,749 customer accounts and generated about $0.88 billion in annual electric revenue, with a service footprint spanning 59 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 Middle Tennessee E M C customer experienced 73.8 minutes of power interruptions, the industry-standard SAIDI metric (System Average Interruption Duration Index). 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 1.13 for the same period, meaning customers statistically saw about 1 distinct interruption that year. Once major event days (hurricanes, ice storms) are excluded, SAIDI comes down to 51.1 minutes, and the spread against the headline 73.8 indicates how much weather, versus routine infrastructure, drove the outage total.
With 4 consecutive years of EIA data (2020–2023), Middle Tennessee E M C's reliability record can be judged on trend rather than one isolated year. SAIDI dropped from 242.6 to 73.8 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.
74 outage minutes per customer annually
Minutes without power per year (2023)
SAIDI by year (2020-2023)
Minutes per customer-year · EIA Form 861
Year-by-year SAIDI for Middle Tennessee E M C from the same EIA filings as the table below. Lower is better; major-event years can spike the headline figure.
Middle Tennessee E M C SAIDI trend
Middle Tennessee E M C vs the nationwide SAIDI distribution
Where this utility's headline SAIDI sits among every EIA Form 861 utility with a reported figure
74 Lower than most fewer outage minutes than 73% 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 Middle Tennessee E M C sits on price vs. reliability
Among the 781 U.S. utilities large enough to report both revenue per customer and a recent outage record, Middle Tennessee E M C charges more per customer than 56% of them, and is more reliable (lower SAIDI) than 77% of them, placing it in the quadrant where it pays more and is more reliable. Revenue per customer and outage minutes are independent figures: paying more does not guarantee fewer outages.
Revenue per customer: $2,634/year · Latest SAIDI: 73.8 minutes/year.
SAIDI 2023 breakdown: 73.8 minutes
Reliability Trend (2020–2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 242.6 | 58.1 | 1.576 | 311,607 |
| 2021 | 65.0 | 54.9 | 1.000 | 317,572 |
| 2022 | 88.5 | 61.2 | 1.829 | 327,587 |
| 2023 | 73.8 | 51.1 | 1.127 | 337,749 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Service Area
Middle Tennessee E M C serves 59 ZIP codes in Tennessee.
Frequently Asked Questions
How reliable is Middle Tennessee E M C?
Middle Tennessee E M C had a SAIDI of 73.8 minutes in 2023. Excluding major storm impacts, this beats the national average, a sign of above-average reliability.
What type of utility is Middle Tennessee E M C?
Middle Tennessee E M C is classified as a Cooperative serving Tennessee.
How many customers does Middle Tennessee E M C serve?
Middle Tennessee E M C serves approximately 334,749 customers in Tennessee.
How has Middle Tennessee E M C's reliability changed over time?
Middle Tennessee E M C has 4 years of reliability data (2020-2023). SAIDI has held roughly steady across these years. Review the trend table above for year-by-year detail.
Utility Profile
- Type
- Cooperative
- State
- Tennessee
- Customers
- 334,749
- Annual Revenue
- $0.88B
- EIA ID
- 12470
Explore
Utilities with similar EIA profiles
Two cross-state peer sets for Middle Tennessee E M C. 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 (335K here), outside Tennessee.
Similar chronic SAIDI
Nearest utilities by latest SAIDI minutes (73.8 here), outside Tennessee, 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.