Electric Utilities

918 U.S. electric distribution utilities with SAIDI and SAIFI reliability data drawn from the U.S. Energy Information Administration EIA Form 861 annual electric power industry survey (2020-2023 filing years, last refreshed June 2026). According to the EIA, the national nMED SAIDI average was approximately 146 minutes per customer per year in 2022 (excluding major event days). See our methodology for IEEE Standard 1366 definitions and refresh cadence.

Utility State Type SAIDI 2023 SAIFI 2023
Mt Wheeler Power, Inc NV Cooperative - -
Nantucket Electric Co MA IOU 44.5 0.29
Nashville Electric Service TN Municipal 1312.3 3.03
Natchez Trace Elec Power Assn MS Cooperative 675.6 5.75
Navajo Tribal Utility Authority AZ State 435.6 4.53
Navasota Valley Elec Coop, Inc TX Cooperative 3968.8 4.92
Nebraska Public Power District NE Municipal 69.7 0.60
Nevada Power Co NV IOU 72.0 0.62
New Hampshire Elec Coop Inc NH Cooperative 1084.9 3.88
New River Light & Power Co NC State 37.5 0.44
New Smyrna Beach City of FL Municipal 66.3 0.97
New York State Elec & Gas Corp NY IOU 341.2 1.86
Newberry Electric Coop, Inc SC Cooperative 271.9 -
Newnan Wtr, Sewer & Light Comm GA Municipal 22.1 0.70
Niagara Mohawk Power Corp. NY IOU 207.9 1.14
NineStar Connect IN Cooperative 164.5 3.04
Noble County R E M C IN Cooperative 226.8 1.94
Nodak Electric Coop Inc ND Cooperative 302.2 1.56
Nolin Rural Electric Coop Corp KY Cooperative 730.0 1.91
Norris Public Power District NE Municipal 239.0 1.78
North Arkansas Elec Coop, Inc AR Cooperative 1809.5 3.14
North Central Elec Coop, Inc - (OH) OH Cooperative 109.9 -
North East Mississippi EPA MS Cooperative 169.3 0.94
North Georgia Elec Member Corp GA Cooperative 254.1 2.29
North Plains Electric Coop Inc TX Cooperative 396.6 -
North West Rural Electric Coop IA Cooperative 57.1 0.61
Northcentral Mississippi E P A MS Cooperative 405.6 3.25
Northeast Louisiana Power Coop Inc. LA Cooperative 3.3 2.59
Northeastern Rural E M C IN Cooperative 45.1 0.86
Northern Electric Coop, Inc SD Cooperative 73.9 0.67
Northern Indiana Pub Serv Co IN IOU 320.0 1.14
Northern Lights, Inc ID Cooperative 291.1 -
Northern Neck Elec Coop, Inc VA Cooperative 128.8 1.14
Northern Plains Electric Coop ND Cooperative 551.4 2.14
Northern States Power Co MI IOU 245.2 1.59
Northern States Power Co - Minnesota MN IOU 168.4 1.06
Northern Virginia Elec Coop VA Cooperative 110.7 0.88
Northern Wasco County PUD OR Municipal 12.4 0.07
NorthWestern Energy - (SD) SD IOU 116.5 1.37
NorthWestern Energy LLC - (MT) MT IOU 102.5 0.93
NSTAR Electric Company MA IOU 189.8 0.88
Nueces Electric Cooperative TX Cooperative 418.1 3.41
Oakdale Electric Coop WI Cooperative 156.0 1.17
Oconomowoc Utilities WI Municipal 11.0 0.12
Ohio Edison Co OH IOU 575.3 1.48
Ohio Power Co OH IOU 326.1 1.24
Okefenoke Rural El Member Corp FL Cooperative 787.0 4.32
Oklahoma Electric Coop Inc OK Cooperative 327.3 2.50
Oklahoma Gas & Electric Co AR IOU 492.0 1.80
Omaha Public Power District NE Municipal 80.1 0.55
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