Municipal · Texas · EIA 16604
City of San Antonio - (TX)
Municipal · Texas · 939K customers. According to the U.S. Energy Information Administration's EIA Form 861, reliability for 2023 shows SAIDI 170 minutes/customer.
Reliability verdict
City of San Antonio - (TX) shows above-average chronic reliability in 2023: 61 minutes SAIDI excluding major events (170 minutes including them) across 939K customers.
- 170 min
- SAIDI 2023
- 1.65
- SAIFI 2023
- 61 min
- SAIDI ex-MED
- 939K
- Customers
Chronic reliability judged on SAIDI excluding major event days when reported (IEEE 1366). Source: EIA Form 861 · August 2026.
Signature read: mid-cohort SAIDI between the 96 and 258 minute tercile cuts.
What mid-pack City of San Antonio - (TX) filings show
City of San Antonio - (TX) is a municipally-owned utility operating in Texas under EIA identifier 16604. It reports service to approximately 938,628 customer accounts and generated about $2.71 billion in annual electric revenue, with a service footprint spanning 117 ZIP codes. Being municipally owned, the utility answers to a local board or city council rather than a state commission, and carries a federal income tax exemption.
In 2023, the average City of San Antonio - (TX) customer experienced 169.7 minutes of power interruptions, the industry-standard SAIDI metric (System Average Interruption Duration Index). Excluding major weather events from that total, that is comfortably under the 120–180 minute national benchmark range, a sign of solid grid resilience and quick outage response. SAIFI, the average number of outage events per customer, was 1.65 for the same period, so customers statistically faced roughly 2 distinct interruptions that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 61.2 minutes, the gap between that figure and the headline 169.7 reveals how much weather, not day-to-day infrastructure, drove outages.
City of San Antonio - (TX) 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 94.0 to 169.7 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.
170 min/year per customer
Power-out minutes per year (2023)
SAIDI by year (2020-2023)
Minutes per customer-year · EIA Form 861
Year-by-year SAIDI for City of San Antonio - (TX) from the same EIA filings as the table below. Lower is better; major-event years can spike the headline figure.
City of San Antonio - (TX) SAIDI trend
City of San Antonio - (TX) vs the nationwide SAIDI distribution
Where this utility's headline SAIDI sits among every EIA Form 861 utility with a reported figure
170 Around the middle fewer outage minutes than 48% 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 San Antonio - (TX) 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 San Antonio - (TX) charges more per customer than 70% of them, and is more reliable (lower SAIDI) than 52% 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: $2,890/year · Latest SAIDI: 169.7 minutes/year.
SAIDI 2023 breakdown: 169.7 minutes
Reliability Trend (2020–2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 94.0 | 56.9 | 1.200 | 848,579 |
| 2021 | 175.8 | 67.7 | 1.581 | 869,234 |
| 2022 | 123.7 | 59.8 | 1.410 | 889,493 |
| 2023 | 169.7 | 61.2 | 1.650 | 902,387 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Service Area
City of San Antonio - (TX) serves 117 ZIP codes in Texas.
Frequently Asked Questions
How reliable is City of San Antonio - (TX)?
City of San Antonio - (TX) had a SAIDI of 169.7 minutes in 2023 including major weather events, but 61.2 minutes excluding them (the industry-standard measure of routine reliability, so the gap traces back to a major storm that year, not a chronic issue). Excluding major weather events, this is below the national average, indicating above-average reliability.
What type of utility is City of San Antonio - (TX)?
City of San Antonio - (TX) is classified as a Municipal serving Texas.
How many customers does City of San Antonio - (TX) serve?
City of San Antonio - (TX) serves approximately 938,628 customers in Texas.
How has City of San Antonio - (TX)'s reliability changed over time?
City of San Antonio - (TX) has 4 years of reliability data (2020-2023). This utility's SAIDI has stayed fairly flat over the period. Review the trend table above for year-by-year detail.
Utility Profile
- Type
- Municipal
- State
- Texas
- Customers
- 938,628
- Annual Revenue
- $2.71B
- EIA ID
- 16604
Explore
Utilities with similar EIA profiles
Two cross-state peer sets for City of San Antonio - (TX). 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 (939K here), outside Texas.
Similar chronic SAIDI
Nearest utilities by latest SAIDI minutes (169.7 here), outside Texas, 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.