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
Sequachee Valley Electric Coop	TN	Cooperative	487.5	3.42
Sevier County Electric System	TN	Municipal	462.0	3.02
Shakopee Public Utilities Comm	MN	Municipal	4.9	0.10
Shawano Municipal Utilities	WI	Municipal	65.3	0.85
Shelby Energy Coop, Inc - (KY)	KY	Cooperative	432.3	2.06
Shenandoah Valley Elec Coop	VA	Cooperative	182.8	1.73
Sierra Pacific Power Co	NV	IOU	327.3	1.81
Singing River Elec Cooperative	MS	Cooperative	161.7	-
Sioux Valley SW Elec Coop	MN	Cooperative	47.8	1.06
Slinger Utilities	WI	Municipal	156.2	1.07
Snapping Shoals El Member Corp	GA	Cooperative	550.6	1.58
South Alabama Elec Coop, Inc	AL	Cooperative	1067.5	4.16
South Carolina Public Service Authority	SC	State	67.5	0.85
South Central Electric Assn	MN	Cooperative	102.1	1.07
South Central Indiana REMC	IN	Cooperative	2766.3	4.61
South Central Power Company	OH	Cooperative	541.5	2.31
South Kentucky Rural E C C	KY	Cooperative	1714.5	2.95
South Louisiana Elec Coop Assn	LA	Cooperative	86.8	1.46
South River Elec Member Corp	NC	Cooperative	52.9	-
Southeast Colorado Power Assn	CO	Cooperative	751.1	-
Southeastern Electric Coop Inc - (OK)	OK	Cooperative	387.8	6.12
Southeastern Electric Coop Inc - (SD)	SD	Cooperative	53.8	-
Southeastern IL Elec Coop, Inc	IL	Cooperative	204.9	1.80
Southeastern Indiana R E M C	IN	Cooperative	399.3	2.16
Southern California Edison Co	CA	IOU	115.9	1.04
Southern Indiana Gas & Elec Co	IN	IOU	450.5	1.57
Southern Indiana R E C, Inc	IN	Cooperative	538.0	3.08
Southern Maryland Elec Coop Inc	MD	Cooperative	201.1	1.33
Southern Pine Electric Cooperative	MS	Cooperative	1625.1	5.21
Southern Pioneer Electric Company	KS	Cooperative	253.0	-
Southern Rivers Energy	GA	Cooperative	706.8	4.80
Southside Electric Coop, Inc	VA	Cooperative	271.5	2.44
Southwest Arkansas E C C	AR	Cooperative	452.5	1.99
Southwest Electric Coop, Inc	MO	Cooperative	339.1	0.85
Southwest Louisiana E M C	LA	Cooperative	242.7	2.80
Southwest Mississippi E P A	MS	Cooperative	2255.5	-
Southwest Public Power Dist	NE	Municipal	213.4	1.03
Southwest Tennessee E M C	TN	Cooperative	701.4	3.98
Southwestern Electric Coop Inc - (IL)	IL	Cooperative	374.5	2.74
Southwestern Electric Power Co	AR	IOU	584.2	2.09
Southwestern Public Service Co	NM	IOU	256.1	1.39
Stearns Cooperative Elec Assn	MN	Cooperative	100.4	1.11
Steele-Waseca Cooperative Electric	MN	Cooperative	61.6	0.71
Stillwater Utilities Authority	OK	Municipal	128.4	0.89
Strawberry Electric Serv Dist	UT	Municipal	143.1	-
Sulphur Springs Valley E C Inc	AZ	Cooperative	136.7	1.13
Sumter Electric Coop, Inc	FL	Cooperative	71.4	1.03
Sumter Electric Member Corp	GA	Cooperative	351.6	-
Sun Prairie Utilities	WI	Municipal	16.9	0.44
Superior Water and Light Co	WI	IOU	86.1	1.24

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