Municipal · Washington · EIA 18429
City of Tacoma - (WA)
Municipal · Washington · 197K customers. According to the U.S. Energy Information Administration's EIA Form 861, reliability for 2023 shows SAIDI 55 minutes/customer.
Reliability verdict
City of Tacoma - (WA) shows above-average chronic reliability in 2023: 55 minutes SAIDI excluding major events across 197K customers.
- 55 min
- SAIDI 2023
- 0.60
- SAIFI 2023
- 55 min
- SAIDI ex-MED
- 197K
- 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 City of Tacoma - (WA) filings show
City of Tacoma - (WA) is a municipally-owned utility operating in Washington under EIA identifier 18429. It reports service to approximately 196,833 customer accounts and generated about $0.41 billion in annual electric revenue, with a service footprint spanning 38 ZIP codes. 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 Tacoma - (WA) customer experienced 55.2 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 0.60 for the same period, meaning customers statistically saw about 1 distinct interruption that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 55.2 minutes, the gap between that figure and the headline 55.2 reveals how much weather, not day-to-day infrastructure, drove outages.
City of Tacoma - (WA) 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 window, SAIDI moved from 84.9 down to 55.2 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.
55 minutes per customer per year
Minutes without power per year (2023)
SAIDI by year (2020-2023)
Minutes per customer-year · EIA Form 861
Year-by-year SAIDI for City of Tacoma - (WA) from the same EIA filings as the table below. Lower is better; major-event years can spike the headline figure.
City of Tacoma - (WA) SAIDI trend
City of Tacoma - (WA) vs the nationwide SAIDI distribution
Where this utility's headline SAIDI sits among every EIA Form 861 utility with a reported figure
55 Among the lowest fewer outage minutes than 81% 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 Tacoma - (WA) 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 Tacoma - (WA) charges more per customer than 21% of them, and is more reliable (lower SAIDI) than 84% of them, placing it in the quadrant where it pays less while still being more reliable, the best-value quadrant. Revenue per customer and outage minutes are independent figures: paying more does not guarantee fewer outages.
Revenue per customer: $2,088/year · Latest SAIDI: 55.2 minutes/year.
SAIDI 2023 breakdown: 55.2 minutes
Reliability Trend (2020–2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 84.9 | 55.5 | 0.740 | 175,106 |
| 2021 | 314.4 | 90.8 | 1.310 | 176,732 |
| 2022 | 152.3 | 76.2 | 1.046 | 177,234 |
| 2023 | 55.2 | 55.2 | 0.598 | 178,139 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Service Area
City of Tacoma - (WA) serves 38 ZIP codes in Washington.
Frequently Asked Questions
How reliable is City of Tacoma - (WA)?
City of Tacoma - (WA) had a SAIDI of 55.2 minutes in 2023. Excluding major storm impacts, this beats the national average, a sign of above-average reliability.
What type of utility is City of Tacoma - (WA)?
City of Tacoma - (WA) is classified as a Municipal serving Washington.
How many customers does City of Tacoma - (WA) serve?
City of Tacoma - (WA) serves approximately 196,833 customers in Washington.
How has City of Tacoma - (WA)'s reliability changed over time?
City of Tacoma - (WA) 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.
Utility Profile
- Type
- Municipal
- State
- Washington
- Customers
- 196,833
- Annual Revenue
- $0.41B
- EIA ID
- 18429
Explore
Utilities with similar EIA profiles
Two cross-state peer sets for City of Tacoma - (WA). 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 (197K here), outside Washington.
Similar chronic SAIDI
Nearest utilities by latest SAIDI minutes (55.2 here), outside Washington, 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.