Interactive tools · EIA Form 861 · 2023

Tools & Calculators

According to the U.S. Energy Information Administration's EIA Form 861 (2023 filing cohort), these tools open the same reliability archive behind every utility and state page: 918 distribution utilities across 51 states.

Open a tool ↓ Browse utilities

What these tools unlock

According to EIA Form 861 reliability filings, the customer-weighted national SAIDI sits near 341 minutes per year across 918 utilities with filings. Ownership type diverges: Cooperative averages the most outage minutes (474) while IOU averages the longest interruption (254 minutes per event).

918
Utilities indexed
918
Reliability filings
341 min
National SAIDI avg
51
State averages

Counts and averages are computed live from the portal DB (same MAX(year) cohort as state and utility pages). Source: EIA Form 861.

What's in the archive

Base utility record100%Reliability filing present100%SAIDI (latest year)97.7%SAIFI (latest year)91.1%Customer count98.9%
Share of 918 utility records carrying each independently verifiable layer. A lookup returns deeper reliability metrics only where the filing exists.

Mean SAIDI by ownership (2023)

Municipal145 minIOU374 minCooperative474 min
Unweighted mean across filers with SAIDI and SAIFI. Lower is better.

Mean SAIFI by ownership (same types)

Municipal1.09IOU1.47Cooperative2.25
Same row order. Minutes per event (SAIDI/SAIFI) can rank a different type worst.

Tool set

Source: U.S. Energy Information Administration (EIA) Form 861 Annual Electric Power Industry Report, reliability · 2023 Tool averages use the same MAX(year) filing cohort as utility and state pages.

Download the EIA Form 861 reliability extract cited on this page: eia-form-861-reliability-statistics.csv (CC BY 4.0).

According to the U.S. Energy Information Administration (EIA), electric utilities publish SAIDI and SAIFI reliability metrics in Form 861 annual filings. Every figure on PlainUtility is rebuilt from those federal tables; no number is typed in by an editor. Tool hubs and compare boards recompute from the portal DB; they do not invent medians outside the Form 861 filer set. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2023.