Municipal · Tennessee · EIA 16223
City of Rockwood - (TN)
Municipal · Tennessee · 15K customers. According to the U.S. Energy Information Administration's EIA Form 861, reliability for 2023 shows SAIDI 1029 minutes/customer.
Reliability verdict
City of Rockwood - (TN) shows above-average chronic reliability in 2023: 83 minutes SAIDI excluding major events (1029 minutes including them) across 15K customers.
- 1029 min
- SAIDI 2023
- 3.47
- SAIFI 2023
- 83 min
- SAIDI ex-MED
- 15K
- 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 City of Rockwood - (TN) filings show
City of Rockwood - (TN) is a municipally-owned utility operating in Tennessee under EIA identifier 16223. It reports service to approximately 15,303 customer accounts and generated about $0.04 billion in annual electric revenue, with a service footprint spanning 1 ZIP code. As a municipal utility, it is typically governed by a local board or city council and is exempt from federal income tax.
In 2023, the average City of Rockwood - (TN) customer experienced 1029.0 minutes of power interruptions, a metric called SAIDI (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 3.47 for the same period, meaning customers statistically saw about 3 distinct interruptions that year. Strip out major event days (hurricanes, ice storms) and SAIDI falls to 82.5 minutes; the difference from the headline 1029.0 shows how much of the outage total came from weather rather than everyday grid issues.
City of Rockwood - (TN) has 4 years of continuous EIA reporting on file (2020–2023), enough to read a real trend rather than a single-year snapshot. Over that span, SAIDI rose from 241.0 to 1029.0 minutes, possibly reflecting tougher weather years or grid upgrades that have not caught up yet.
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.
1029 min/year per customer
Annual minutes without electric service (2023)
SAIDI by year (2020-2023)
Minutes per customer-year · EIA Form 861
Year-by-year SAIDI for City of Rockwood - (TN) from the same EIA filings as the table below. Lower is better; major-event years can spike the headline figure.
City of Rockwood - (TN) SAIDI trend
City of Rockwood - (TN) vs the nationwide SAIDI distribution
Where this utility's headline SAIDI sits among every EIA Form 861 utility with a reported figure
1,029 Higher than most fewer outage minutes than 6% 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 City of Rockwood - (TN) sits on price vs. reliability
Among the 781 U.S. utilities large enough to report both revenue per customer and a recent outage record, City of Rockwood - (TN) charges more per customer than 36% of them, and is more reliable (lower SAIDI) than 7% of them, placing it in the quadrant where it pays less and is less reliable. Revenue per customer and outage minutes are independent figures: paying more does not guarantee fewer outages.
Revenue per customer: $2,302/year · Latest SAIDI: 1029.0 minutes/year.
SAIDI 2023 breakdown: 1029.0 minutes
Reliability Trend (2020–2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 241.0 | 187.4 | 1.907 | 14,790 |
| 2021 | 278.5 | 173.0 | 2.594 | 14,790 |
| 2022 | 278.3 | 219.8 | 2.638 | 14,961 |
| 2023 | 1029.0 | 82.5 | 3.469 | 15,006 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Service Area
City of Rockwood - (TN) serves 1 ZIP code in Tennessee.
Frequently Asked Questions
How reliable is City of Rockwood - (TN)?
City of Rockwood - (TN) had a SAIDI of 1029.0 minutes in 2023 including major weather events, but 82.5 minutes excluding them (the IEEE-standard measure of day-to-day reliability, the gap reflects a major storm that year, not chronic performance). Excluding major storm impacts, this beats the national average, a sign of above-average reliability.
What type of utility is City of Rockwood - (TN)?
City of Rockwood - (TN) is classified as a Municipal serving Tennessee.
How many customers does City of Rockwood - (TN) serve?
City of Rockwood - (TN) serves approximately 15,303 customers in Tennessee.
How has City of Rockwood - (TN)'s reliability changed over time?
City of Rockwood - (TN) 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
- Municipal
- State
- Tennessee
- Customers
- 15,303
- Annual Revenue
- $0.04B
- EIA ID
- 16223
Explore
Utilities with similar EIA profiles
Two cross-state peer sets for City of Rockwood - (TN). 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 (15K here), outside Tennessee.
Similar chronic SAIDI
Nearest utilities by latest SAIDI minutes (1029.0 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.