Grid reliability · 2024 · 30 reporting utilities

Power outages in Ohio

The utilities that reported here serve 5,582,977 customers between them, not the whole state. Weighted by customer count, they averaged 2.2 hr without power in an ordinary year and 8.5 hr once major events are counted. Each figure comes only from the filers that published it, and the counts are below.

What it means

Why there are two numbers

Across the utilities that filed both figures, major events account for 74% of the outage time Ohio recorded once they are counted: 8.5 hr against 2.2 hr without them, a factor of 3.8×. Solar panels alone do not help during an outage, because a grid-tied array shuts down when the grid does, so riding through one is a battery question. This figure will not answer it: it is an annual average across a utility’s customers, not the length or the load of any single outage. What it does say is how much of the outage time here arrives with major events rather than on ordinary days.

The comparison is drawn from the 30 utilities that filed both figures, which is all of them, so both sides of the ratio describe the same set of customers. The two headline figures above are averaged over everyone who filed each one, so dividing them would not give this number.

Ordinary year2.2 hr22 of 51 jurisdictions, longest first · 30 filings

With major events8.5 hrStorms, ice, and fires included as filed · 30 filings

Interruptions a year1.0×Ordinary year; 1.3× with major events

The bill sideWhat solar offsetsRates and modelled output by utility

The utilities behind the average

Each of Ohio’s figures is a customer-weighted average of the filings that carried that metric, not of the table as a whole: the ordinary-year average is built from 30 filings and the storm-inclusive average from 30 filings, out of 30 filings that published an outage figure at all. Those are the same utilities on both sides. A utility that filed without publishing a metric, or whose two major-event variants contradicted each other, is absent from that metric rather than counted as zero.

Reported interruption metrics for 2024, largest utility first.
Utility	Customers	Ordinary year	With major events	Interruptions
Ohio Power Co	1,535,393	2.6 hr	4.5 hr	1.0×
Ohio Edison Co	1,067,091	114 min	3.9 hr	1.0×
Duke Energy Ohio Inc	760,441	103 min	5.4 hr	0.8×
Cleveland Electric Illum Co	744,898	2.5 hr	32 hr	1.1×
Dayton Power & Light Co	613,948	106 min	8.4 hr	0.9×
The Toledo Edison Co	312,806	95 min	2.0 hr	0.9×
South Central Power Company	126,148	3.4 hr	5.3 hr	1.7×
City of Cleveland - (OH)	73,666	2.8 hr	2.8 hr	1.1×
City of Hamilton - (OH)	29,891	90 min	90 min	1.7×
Licking Rural Electric Inc	27,729	113 min	4.0 hr	1.0×
City of Cuyahoga Falls - (OH)	26,783	44 min	76 min	0.5×
Consolidated Cooperative	19,176	87 min	5.9 hr	0.9×
City of Columbus - (OH)	19,111	4.1 hr	4.1 hr	2.2×
Buckeye Rural Elec Coop, Inc	18,863	19 hr	49 hr	3.0×
Holmes-Wayne Electric Coop Inc	18,045	3.0 hr	3.0 hr	1.5×
City of Westerville - (OH)	18,012	21 min	57 min	0.3×
Pioneer Rural Elec Coop, Inc - (OH)	17,751	94 min	2.1 hr	1.1×
Guernsey-Muskingum El Coop Inc	17,356	8.1 hr	8.2 hr	2.6×
Lorain-Medina R E C, Inc	16,831	2.6 hr	2.6 hr	not reported
City of Bowling Green - (OH)	14,952	8 min	21 min	0.1×
City of Wadsworth - (OH)	13,813	54 min	54 min	0.4×
Hancock-Wood Electric Coop Inc	13,523	35 min	80 min	0.6×
City of Painesville	12,614	52 min	5.8 hr	0.5×
Union Rural Electric Coop, Inc	12,320	59 min	4.3 hr	0.5×
Butler Rural Electric Coop Inc - (OH)	11,780	61 min	3.8 hr	1.7×
Midwest Electric, Inc - (OH)	11,221	89 min	4.9 hr	1.0×
City of Piqua - (OH)	10,833	26 min	26 min	0.9×
North Central Elec Coop, Inc - (OH)	9,745	62 min	65 min	not reported
City of Dover - (OH)	7,156	8 min	109 min	0.1×
Midwest Energy Cooperative - (MI)	1,081	4.6 hr	4.6 hr	1.1×

What this page is not

It is a state average of utility filings, not a measurement at any address. Each filing is itself an average over a whole service territory, so a rural feeder and a downtown network arrive here as one number, and nothing in this dataset says how far an individual address sits from it. Nothing here predicts a future year either, and a single severe storm can move a utility’s figure by an order of magnitude.

The methodology page states the sources, the definitions, and the limits. Back to the Grid Reliability Index

Source: U.S. Energy Information Administration, Form EIA-861 reliability file, data year 2024, covering 2024-01-01 through 2024-12-31. The snapshot covers no later period.