IOU · Ohio · EIA 4922
Dayton Power & Light Co
IOU · Ohio · 213K customers. According to the U.S. Energy Information Administration's EIA Form 861, reliability for 2023 shows SAIDI 170 minutes/customer.
Reliability verdict
Dayton Power & Light Co shows above-average chronic reliability in 2023: 96 minutes SAIDI excluding major events across 213K customers.
- 170 min
- SAIDI 2023
- 0.99
- SAIFI 2023
- 96 min
- SAIDI ex-MED
- 213K
- 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 Dayton Power & Light Co filings show
Dayton Power & Light Co is an investor-owned utility operating in Ohio under EIA identifier 4922. It reports service to approximately 213,300 customer accounts and generated about $0.43 billion in annual electric revenue, with a service footprint spanning 218 ZIP codes. Because it is investor-owned, the state public utility commission oversees its rate cases and reliability performance rather than a local board.
In 2023, the average Dayton Power & Light Co customer experienced 170.5 minutes of power interruptions, a metric called SAIDI (System Average Interruption Duration Index). That keeps this utility below the typical 120–180 minute national benchmark, consistent with a well-hardened distribution system and fast restoration crews. Over the same period, SAIFI (outage events per customer) was 0.99, putting the typical customer at roughly 1 distinct interruption that year. Once major event days (hurricanes, ice storms) are excluded, SAIDI comes down to 96.2 minutes, and the spread against the headline 170.5 indicates how much weather, versus routine infrastructure, drove the outage total.
With 4 consecutive years of EIA data (2020–2023), Dayton Power & Light Co's reliability record can be judged on trend rather than one isolated year. SAIDI dropped from 174.3 to 170.5 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.
170 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 Dayton Power & Light Co from the same EIA filings as the table below. Lower is better; major-event years can spike the headline figure.
Dayton Power & Light Co SAIDI trend
Dayton Power & Light Co 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 Dayton Power & Light Co sits on price vs. reliability
Among the 781 U.S. utilities large enough to report both revenue per customer and a recent outage record, Dayton Power & Light Co charges more per customer than 16% of them, and is more reliable (lower SAIDI) than 52% 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: $2,019/year · Latest SAIDI: 170.5 minutes/year.
SAIDI 2023 breakdown: 170.5 minutes
Reliability Trend (2020–2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 174.3 | 122.3 | 1.100 | 594,965 |
| 2021 | 179.6 | 108.0 | 0.990 | 606,136 |
| 2022 | 182.0 | 108.8 | 1.050 | 604,737 |
| 2023 | 170.5 | 96.2 | 0.990 | 609,468 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Service Area
Dayton Power & Light Co serves 218 ZIP codes in Ohio.
Frequently Asked Questions
How reliable is Dayton Power & Light Co?
Dayton Power & Light Co had a SAIDI of 170.5 minutes in 2023. Leaving aside major weather events, that figure comes in under the national average, pointing to above-average reliability.
What type of utility is Dayton Power & Light Co?
Dayton Power & Light Co is classified as a IOU serving Ohio.
How many customers does Dayton Power & Light Co serve?
Dayton Power & Light Co serves approximately 213,300 customers in Ohio.
How has Dayton Power & Light Co's reliability changed over time?
Dayton Power & Light Co 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
- IOU
- State
- Ohio
- Customers
- 213,300
- Annual Revenue
- $0.43B
- EIA ID
- 4922
Explore
Utilities with similar EIA profiles
Two cross-state peer sets for Dayton Power & Light Co. 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 (213K here), outside Ohio.
Similar chronic SAIDI
Nearest utilities by latest SAIDI minutes (170.5 here), outside Ohio, 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.