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
Surry-Yadkin Elec Member Corp	NC	Cooperative	372.2	1.94
Suwannee Valley Elec Coop Inc	FL	Cooperative	6825.0	6.86
Tallahatchie Valley E P A	MS	Cooperative	989.1	5.30
Tallapoosa River Elec Coop Inc	AL	Cooperative	327.7	2.34
Talquin Electric Coop, Inc	FL	Cooperative	1219.0	5.10
Tampa Electric Co	FL	IOU	82.6	1.42
Taylor County Rural E C C	KY	Cooperative	879.8	1.97
Taylor Electric Coop Inc - (TX)	TX	Cooperative	625.6	3.38
Tennessee Valley Electric Coop	TN	Cooperative	-	-
Texas-New Mexico Power Co	TX	IOU	129.7	1.29
The Narragansett Electric Co	RI	IOU	104.6	0.78
The Potomac Edison Company	MD	IOU	205.3	1.05
The Toledo Edison Co	OH	IOU	331.4	1.01
Three Notch Elec Member Corp	GA	Cooperative	870.0	6.40
Three Rivers Electric Coop	MO	Cooperative	173.8	1.11
Tideland Electric Member Corp	NC	Cooperative	459.5	3.49
Tipmont Rural Elec Member Corp	IN	Cooperative	406.3	1.28
Town of Apex- (NC)	NC	Municipal	80.0	0.66
Town of Bedford - (VA)	VA	Municipal	274.2	1.33
Town of Braintree - (MA)	MA	Municipal	5.8	0.10
Town of Danvers	MA	Municipal	24.7	0.30
Town of Erwin - (TN)	TN	Municipal	71.0	1.54
Town of High Point	NC	Municipal	123.0	1.10
Town of Hudson - (MA)	MA	Municipal	68.3	1.67
Town of Huntersville - (NC)	NC	Municipal	57.8	0.99
Town of Mansfield - (MA)	MA	Municipal	52.9	0.53
Town of Massena - (NY)	NY	Municipal	29.0	0.67
Town of Middleborough - (MA)	MA	Municipal	32.9	0.50
Town of North Attleborough - (MA)	MA	Municipal	45.0	0.31
Town of Reading - (MA)	MA	Municipal	36.9	0.34
Town of Shrewsbury - (MA)	MA	Municipal	10.9	0.19
Town of Sterling - (MA)	MA	Municipal	3.2	0.06
Town of Wallingford - (CT)	CT	Municipal	110.3	0.46
Town of Wellesley - (MA)	MA	Municipal	38.5	0.63
Tri-County Elec Member Corp (GA)	GA	Cooperative	260.3	1.75
Tri-County Elec Member Corp (NC)	NC	Cooperative	193.7	1.54
Tri-County Elec Member Corp (TN)	KY	Cooperative	1006.2	3.97
Tri-County Electric Coop (MI)	MI	Cooperative	913.0	1.06
Tri-County Electric Coop, Inc (FL)	FL	Cooperative	10820.0	6.00
Tri-County Electric Coop, Inc (IL)	IL	Cooperative	257.6	1.91
Tri-County Electric Coop, Inc (OK)	OK	Cooperative	288.8	1.57
Tri-County Electric Coop, Inc (SC)	SC	Cooperative	427.4	3.75
Tri-County Electric Coop, Inc (TX)	TX	Cooperative	200.2	1.72
Trico Electric Cooperative Inc	AZ	Cooperative	237.9	1.17
Trinity Valley Elec Coop Inc	TX	Cooperative	542.0	3.22
Tucson Electric Power Co	AZ	IOU	168.7	0.98
Tullahoma Board-Public Utils	TN	Municipal	68.8	2.76
Turlock Irrigation District	CA	Municipal	80.0	0.74
Two Rivers Water & Light	WI	Municipal	80.2	0.73
UGI Utilities, Inc	PA	IOU	119.0	0.83

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