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Electricity Outage Duration Statistics: U.S., Germany, and Mauritius

Compare reported outage duration measures across U.S. states, Germany, and Mauritius, with each period, unit, and scope stated.

November 12, 2026 8 min read hydrogenenginecenter.com Editorial Team

Contents

Electricity outage duration statistics by state: Northeast and Mid-Atlantic, 2024

The Federal Energy Regulatory Commission (FERC) reports state-level System Average Interruption Duration Index (SAIDI) values for “All Outage Events,” measured in minutes. SAIDI describes the amount of time the average customer is without power during a year. FERC calculates it by dividing customer interruption minutes by customers served. It is therefore an aggregate distribution-system measure, not the duration of one particular outage or a claim that every customer experienced the same interruption time. The values below refer to 2024 and retain the source’s state-level scope and units. Source: FERC, “How Affordable and Reliable is Your Power?”

State2024 SAIDI (minutes)
Connecticut153.6
Maine1,748.6
Massachusetts102
New Hampshire922.7
Rhode Island104.3
Vermont696.7
New Jersey174.2
New York219.9
Pennsylvania336.1

The New England observations span a wide range. Massachusetts is reported at 102 minutes and Rhode Island at 104.3, while Connecticut is 153.6. The other listed values are Vermont at 696.7, New Hampshire at 922.7, and Maine at 1,748.6 minutes. These figures show variation in the reported state averages; they do not tell us what caused that variation or how interruption time was distributed among individual customers. Source: FERC, “How Affordable and Reliable is Your Power?”

The Mid-Atlantic entries are New Jersey at 174.2 minutes, New York at 219.9, and Pennsylvania at 336.1. Because all entries use the same year, unit, and “All Outage Events” category, readers can compare the reported SAIDI values directly as state-level index observations. The comparison does not provide utility-by-utility or neighborhood-level detail, and it should not be read as the duration of a typical single outage. Source: FERC, “How Affordable and Reliable is Your Power?”

Electricity outage duration statistics by state: Midwest and South, 2024

The Midwest values include Illinois at 156.9 minutes, Iowa at 166.7, Minnesota at 219.6, Missouri at 224.3, Wisconsin at 266.1, Kansas at 285.6, and Indiana at 312.4. North Dakota is listed at 99.1 minutes and South Dakota at 84.7. Each is a 2024 SAIDI value for all outage events, measured in minutes on FERC’s state table. Source: FERC, “How Affordable and Reliable is Your Power?”

State2024 SAIDI (minutes)
Illinois156.9
Indiana312.4
Michigan470.4
Ohio510.5
Wisconsin266.1
Iowa166.7
Kansas285.6
Minnesota219.6
Missouri224.3
Nebraska641.7
North Dakota99.1
South Dakota84.7

Nebraska’s reported 641.7 minutes is higher than the values for North Dakota and South Dakota, while Michigan is listed at 470.4 and Ohio at 510.5 minutes. These are differences among state-level distribution-system averages. They do not establish why the figures vary, nor do they identify the number or causes of interruptions. Because SAIDI aggregates customer interruption minutes, it should not be described as a single outage’s typical length. Source: FERC, “How Affordable and Reliable is Your Power?”

The South and neighboring Mid-Atlantic observations add a broad spread. Delaware is 116.1 minutes, the District of Columbia 32.6, Maryland 118.1, and Virginia 418.3. Alabama is 279.4 minutes, Kentucky 648.3, and Mississippi 567.1. The remaining reported values are Florida at 1,321.5, Georgia at 1,229.1, North Carolina at 1,441, South Carolina at 3,136.5, and West Virginia at 1,165.5 minutes. These are 2024 state or district measures in minutes, not outage counts. Source: FERC, “How Affordable and Reliable is Your Power?”

South Carolina’s 3,136.5 minutes is the largest reported value in this group; North Carolina is 1,441 and Florida is 1,321.5. The District of Columbia is listed at 32.6 minutes. This contrast describes the spread in the reported index. It does not explain the difference or imply that every customer in a state or district experienced its average value. Source: FERC, “How Affordable and Reliable is Your Power?”

Electricity outage duration statistics by state: West and Pacific, 2024

FERC’s western and Pacific state values are also 2024 SAIDI observations for all outage events, in minutes.

State2024 SAIDI (minutes)
Arizona87.5
Colorado255.1
Idaho232.8
Montana351.5
Nevada158.9
New Mexico278.8
Utah119.8
Wyoming137.8
California279.6
Oregon591
Washington623.5
Alaska327.1
Hawaii320.6

Among the listed Mountain West states, Arizona is 87.5 minutes, Utah 119.8, and Wyoming 137.8. Nevada is 158.9, Idaho 232.8, Colorado 255.1, New Mexico 278.8, and Montana 351.5 minutes. This mix illustrates that the regional label does not describe one shared outage duration: the table contains separate state-level distribution-system indices. Source: FERC, “How Affordable and Reliable is Your Power?”

The Pacific values are California at 279.6 minutes, Oregon at 591, and Washington at 623.5. Alaska is listed at 327.1 minutes and Hawaii at 320.6. Washington and Oregon have the largest values among these five entries. This is a comparison of reported SAIDI observations, not an account of outage causes, event counts, or the distribution of interruption time among customers. Source: FERC, “How Affordable and Reliable is Your Power?”

A separate national reference comes from the U.S. Energy Information Administration (EIA): customers averaged five and one-half hours of power interruptions nationally in 2022. That figure concerns a different year and national framing, so it should not be treated as another 2024 state observation or folded into the FERC state table. The state comparisons here remain tied to FERC’s 2024 “All Outage Events” measure. Source: EIA, “U.S. electricity customers averaged five and one-half hours of power interruptions in 2022.”

Electricity outage duration statistics in Germany

Germany’s Federal Network Agency, the Bundesnetzagentur, reported that non-availability of electricity averaged 11.7 minutes per final customer in 2024. Its release also gives 12.8 minutes per final customer for 2023 and identifies 12.7 minutes per final customer as the reported 10-year average. The 2024 result was published in 2025; each number retains the agency’s customer-based framing. Source: Bundesnetzagentur, “Electricity supply interruptions in 2024 shorter than in the previous year.”

Germany measureInterruption duration
2024 average per final customer11.7 minutes
2023 average per final customer12.8 minutes
Reported 10-year average per final customer12.7 minutes

The agency describes SAIDIEnWG as the average duration of unplanned interruptions per connected final customer and voltage level in a calendar year. Its reporting excludes force majeure, and operators report interruptions lasting longer than 3 minutes. Those scope rules matter when comparing Germany with the U.S. values: minutes are the same unit, but the stated populations, exclusions, reporting threshold, and measures differ. Source: Bundesnetzagentur, “Electricity supply interruptions in 2024 shorter than in the previous year.”

The reported 2024 average of 11.7 minutes can be read alongside the agency’s 2023 average of 12.8 minutes and its stated 10-year average of 12.7 minutes. These are the specific reference values presented in the release. They do not establish a longer-term trend or explain what changed. The agency’s terminology and scope should stay attached to the figures when comparing them. Source: Bundesnetzagentur, “Electricity supply interruptions in 2024 shorter than in the previous year.”

Electricity outage duration statistics across Mauritius regions and Port Louis

The Central Electricity Board (CEB) defines SAIDI as the annual average total time without electricity per customer. Its regional series uses hours without supply per customer per year. For 2025, the North region is listed at 2.89 hours, Centre at 3.95, and South at 3.84. These figures describe the named CEB regions, retaining the source’s hours-based unit and per-customer framing. Source: CEB, “Fact Sheet: Reliability of Supply.”

CEB regionYearSAIDI (hours without supply per customer)
North20252.89
Centre20253.95
South20253.84

Centre has the highest of these 3 listed 2025 regional values at 3.95 hours, followed by South at 3.84 and North at 2.89. This is a direct comparison of the reported regions, not a separate nationwide estimate. Annual SAIDI is an average per customer; it does not mean every customer experienced exactly the listed number of hours without supply. Source: CEB, “Fact Sheet: Reliability of Supply.”

CEB reports Port Louis in a separate table. The listed Port Louis SAIDI values are 1.11 hours per customer per year in 2019, 2.40 in 2021, and 2.49 in 2022. These selected observations do not form a complete annual series, so they should not be extended to unlisted years. Their geographic scope is Port Louis rather than the North, Centre, or South regions. Source: CEB, “Fact Sheet: Reliability of Supply.”

Port Louis yearSAIDI (hours per customer per year)
20191.11
20212.40
20222.49

Across the geographies discussed, the shared topic is average interruption or non-availability duration, but the figures retain different units, periods, populations, and index definitions. FERC’s U.S. state entries are 2024 minutes for all outage events; Germany’s values describe average non-availability per final customer under the agency’s reporting rules; CEB’s Mauritius values are annual hours per customer for named regions and Port Louis. Keeping those labels with each statistic makes the comparisons readable without treating the measures as interchangeable.

Sources

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