US PowerGrade

The most reliable electric utilities in America

Customers of Nashville Electric Service in TN went without power for an average of just 0 minutes across all of 2025. Dense urban service territory with underground cable does most of the work here.

#UtilityStateOutage time/yrOutages/yrvs US median
1Nashville Electric ServiceMunicipalTennessee0 hrs0 min0.0Infinity× better
2Singing River Elec CooperativeCooperativeAlabama0 hrs1 min—196.9× better
3Waupun UtilitiesMunicipalWisconsin0.1 hrs4 min0.143.3× better
4Watertown Municipal UtilitiesMunicipalSouth Dakota0.1 hrs4 min0.141.9× better
5City of Marshall - (MN)MunicipalMinnesota0.1 hrs5 min0.236.6× better
6East Mississippi Elec Pwr AssnCooperativeMississippi0.1 hrs6 min2.629.9× better
7Fall River Rural Elec Coop IncCooperativeIdaho0.1 hrs7 min0.124.4× better
8City of Austin - (MN)MunicipalMinnesota0.1 hrs8 min0.223.1× better
9Missoula Electric Coop, IncCooperativeIdaho0.1 hrs8 min0.122.8× better
10City of Fort Collins - (CO)MunicipalColorado0.1 hrs8 min0.122.1× better
11Alameda Municipal PowerMunicipalCalifornia0.2 hrs9 min0.119.7× better
12Town of North Attleborough - (MA)MunicipalMassachusetts0.2 hrs10 min0.118.0× better
13Sun Prairie UtilitiesMunicipalWisconsin0.2 hrs11 min0.116.9× better
14City of Plymouth - (WI)MunicipalWisconsin0.2 hrs11 min0.116.3× better
15City of Sturgeon Bay - (WI)MunicipalWisconsin0.2 hrs12 min0.315.1× better
16City of Chicopee - (MA)MunicipalMassachusetts0.2 hrs12 min0.114.8× better
17Village of Freeport - (NY)MunicipalNew York0.2 hrs12 min0.214.6× better
18Shakopee Public Utilities CommMunicipalMinnesota0.2 hrs13 min0.214.1× better
19City of Marshfield - (WI)MunicipalWisconsin0.2 hrs13 min0.113.8× better
20City of New RichmondMunicipalWisconsin0.2 hrs13 min0.113.8× better
21City of Brookings - (SD)MunicipalSouth Dakota0.2 hrs13 min0.113.5× better
22Overton Power District No 5Political SubdivisionNevada0.2 hrs13 min0.213.2× better
23City of Auburn - (IN)MunicipalIndiana0.2 hrs14 min—12.8× better
24City of Albemarle - (NC)MunicipalNorth Carolina0.2 hrs14 min0.112.6× better
25Fall River Rural Elec Coop IncCooperativeMontana0.2 hrs14 min0.112.3× better
26City of Moorhead - (MN)MunicipalMinnesota0.2 hrs15 min0.412.3× better
27City of Alexandria - (MN)MunicipalMinnesota0.3 hrs16 min0.311.5× better
28Willmar Municipal Utilities (MN)MunicipalMinnesota0.3 hrs16 min0.411.0× better
29Rock Energy CooperativeCooperativeIllinois0.3 hrs16 min0.411.0× better
30City of Greenfield - (IN)MunicipalIndiana0.3 hrs17 min0.210.3× better
31City of Independence - (IA)MunicipalIowa0.3 hrs17 min0.210.3× better
32City of Shelbyville - (TN)MunicipalTennessee0.3 hrs18 min0.610.1× better
33City of Hannibal - (MO)MunicipalMissouri0.3 hrs18 min0.310.1× better
34City of Piqua - (OH)MunicipalOhio0.3 hrs18 min0.310.0× better
35Fall River Rural Elec Coop IncCooperativeWyoming0.3 hrs18 min0.29.8× better
36City of Elk RiverMunicipalMinnesota0.3 hrs19 min0.39.4× better
37Board of Water Electric & CommunicationsMunicipalIowa0.3 hrs19 min0.39.3× better
38Village of Waunakee - (WI)MunicipalWisconsin0.3 hrs19 min0.39.2× better
39City of AnokaMunicipalMinnesota0.3 hrs19 min0.29.1× better
40Los Alamos County - (NM)MunicipalNew Mexico0.3 hrs20 min0.89.1× better
41Beaches Energy ServicesMunicipalFlorida0.3 hrs20 min0.48.9× better
42City of Naperville - (IL)MunicipalIllinois0.3 hrs20 min0.38.8× better
43Town of Mansfield - (MA)MunicipalMassachusetts0.3 hrs21 min0.18.6× better
44City of Ames - (IA)MunicipalIowa0.4 hrs21 min0.48.4× better
45Brainerd Public UtilitiesMunicipalMinnesota0.4 hrs21 min0.38.4× better
46City of St George - (UT)MunicipalUtah0.4 hrs22 min—8.2× better
47City of College Station - (TX)MunicipalTexas0.4 hrs23 min0.67.8× better
48Henderson City Utility CommMunicipalKentucky0.4 hrs23 min0.47.7× better
49Town of Huntersville - (NC)MunicipalNorth Carolina0.4 hrs24 min0.27.5× better
50West River Electric Assn IncCooperativeSouth Dakota0.4 hrs24 min0.37.4× better
51City of Westerville - (OH)MunicipalOhio0.4 hrs25 min0.37.2× better
52City of Zeeland - (MI)MunicipalMichigan0.4 hrs25 min0.37.1× better
53Bristol Virginia UtilitiesMunicipalVirginia0.4 hrs25 min0.27.0× better
54Superior Water and Light CoInvestor OwnedWisconsin0.4 hrs25 min0.37.0× better
55City of DyersburgMunicipalTennessee0.4 hrs26 min1.27.0× better
56City of Lewisburg - (TN)MunicipalTennessee0.4 hrs26 min0.96.9× better
57Plateau Electric CooperativeCooperativeTennessee0.4 hrs26 min5.86.8× better
58City of Loveland - (CO)MunicipalColorado0.4 hrs27 min0.36.7× better
59Northern Wasco County PUD - (OR)Political SubdivisionOregon0.4 hrs27 min0.36.6× better
60City of Salem - (VA)MunicipalVirginia0.5 hrs28 min0.36.5× better
61City of Logan - (UT)MunicipalUtah0.5 hrs29 min0.46.2× better
62Dakota Electric AssociationCooperativeMinnesota0.5 hrs29 min0.36.2× better
63City of Lafayette - (LA)MunicipalLouisiana0.5 hrs30 min0.76.0× better
64Electrical Dist No3 Pinal CountyPolitical SubdivisionArizona0.5 hrs30 min0.45.9× better
65Easton Utilities CommMunicipalMaryland0.5 hrs31 min0.65.8× better
66McMinnville Electric SystemMunicipalTennessee0.5 hrs31 min0.25.8× better
67City of Monroe - (NC)MunicipalNorth Carolina0.5 hrs31 min0.55.7× better
68City of Anaheim - (CA)MunicipalCalifornia0.5 hrs32 min0.65.6× better
69Rochester Public UtilitiesMunicipalMinnesota0.6 hrs33 min0.65.4× better
70City of Paducah - (KY)MunicipalKentucky0.6 hrs33 min0.95.3× better
71City of Stoughton - (WI)MunicipalWisconsin0.6 hrs34 min0.35.3× better
72City of Newark - (DE)MunicipalDelaware0.6 hrs35 min0.35.1× better
73Manitowoc Public UtilitiesMunicipalWisconsin0.6 hrs35 min0.55.0× better
74PUD No 1 of Benton CountyPolitical SubdivisionWashington0.6 hrs36 min0.34.9× better
75Modesto Irrigation DistrictPolitical SubdivisionCalifornia0.6 hrs36 min0.44.9× better
76City of Holyoke - (MA)MunicipalMassachusetts0.6 hrs37 min0.54.8× better
77City of Grand Island - (NE)MunicipalNebraska0.6 hrs37 min1.04.8× better
78Gainesville Regional UtilitiesMunicipalFlorida0.6 hrs37 min0.84.8× better
79City of River FallsMunicipalWisconsin0.6 hrs38 min0.44.7× better
80City of Geneva - (IL)MunicipalIllinois0.6 hrs38 min1.04.6× better
81City of Richland - (WA)MunicipalWashington0.6 hrs39 min0.44.6× better
82Borough of Chambersburg - (PA)MunicipalPennsylvania0.6 hrs39 min0.44.6× better
83City of McPherson - (KS)MunicipalKansas0.6 hrs39 min0.54.6× better
84City of Sturgis - (MI)MunicipalMichigan0.7 hrs39 min0.44.5× better
85City of LongmontMunicipalColorado0.7 hrs40 min0.64.5× better
86City of Springfield - (OR)MunicipalOregon0.7 hrs40 min0.84.5× better
87City of Traverse City - (MI)MunicipalMichigan0.7 hrs40 min0.84.5× better
88City of Colorado Springs - (CO)MunicipalColorado0.7 hrs41 min0.74.4× better
89Brunswick Electric Member CorpCooperativeNorth Carolina0.7 hrs41 min0.64.4× better
90Verendrye Electric Coop IncCooperativeNorth Dakota0.7 hrs42 min0.74.3× better
91Tucson Electric Power CoInvestor OwnedArizona0.7 hrs42 min0.64.3× better
92City of FountainMunicipalColorado0.7 hrs42 min0.64.2× better
93Lehi City CorporationMunicipalUtah0.7 hrs42 min0.44.2× better
94Greenville Utilities CommMunicipalNorth Carolina0.7 hrs43 min0.44.2× better
95South Carolina Public Service AuthorityStateSouth Carolina0.7 hrs43 min0.74.1× better
96City of Siloam Springs - (AR)MunicipalArkansas0.7 hrs43 min0.44.1× better
97City of Wadsworth - (OH)MunicipalOhio0.7 hrs44 min0.54.1× better
98Dixie Escalante R E A, IncCooperativeUtah0.7 hrs44 min0.24.1× better
99Town of Apex- (NC)MunicipalNorth Carolina0.7 hrs45 min0.34.0× better
100Woodruff Electric Coop CorpCooperativeArkansas0.7 hrs45 min0.44.0× better

Outage time is SAIDI: the average minutes a customer went without power across the year, storms and major events included. Outages/yr is SAIFI. The US median across all reporting utilities is 3 hours (178 minutes).