Distribution Systems

EIA-861 distribution systems: distribution circuit counts and circuits with voltage optimization, by utility.

EIAInfrastructure data

Download data

Native record

event_time x utility_number x state x duplicate_index

annual (report year) publication cadence

Evidence

Observed market data

Published observations from the named source

Time basis

Point-in-time records

UTC · event_time

Overview

Distribution_Systems, 2013 on. event_time is 1 January of the report year. release is final or early_release: EIA posts an early release of a year in August and replaces it with the final file in the autumn, and the mirror keeps the newest row per key. A key cell EIA leaves blank is '' or 0, and duplicate_index numbers rows that still share a key, in workbook order.

Query contract

Preserve one canonical row per (event_time, utility_number, state, duplicate_index) before aggregating.

Analysis rules

Group only after preserving the declared grain: event_time, utility_number, state, duplicate_index.

Schema10

Column

Type

event_timeDateTime64(6, 'UTC')

utility_numberInt64

utility_nameLowCardinality(Nullable(String))

stateLowCardinality(String)

distribution_circuitsNullable(Float64)

circuits_with_voltage_optimizationNullable(Float64)

short_formLowCardinality(Nullable(String))

duplicate_indexInt64

releaseLowCardinality(Nullable(String))

ingested_atDateTime64(6, 'UTC')

Sample data

event_time	utility_number	utility_name	state	distribution_circuits	circuits_with_voltage_optimization	short_form	release	ingested_at
2025-01-01 00:00:00.000000	66866	University of Massachusetts Amherst	MA	24	4	∅	early_release	2026-09-29 00:39:37.186782
2025-01-01 00:00:00.000000	66073	MPD Electric Cooperative	SC	154	109	∅	early_release	2026-09-29 00:39:37.186782
2025-01-01 00:00:00.000000	65261	Gila River Indian Utility Authority (GRICUA)	AZ	32	0	∅	early_release	2026-09-29 00:39:37.186782
2025-01-01 00:00:00.000000	60839	Southern Pioneer Electric Company	KS	60	0	∅	early_release	2026-09-29 00:39:37.186782
2025-01-01 00:00:00.000000	60631	Upper Michigan Energy Resources Corp.	MI	65	0	∅	early_release	2026-09-29 00:39:37.186782
2025-01-01 00:00:00.000000	60482	CKenergy Electric Cooperative	OK	98	0	∅	early_release	2026-09-29 00:39:37.186782
2025-01-01 00:00:00.000000	59505	Heartland REMC	IN	72	∅	∅	early_release	2026-09-29 00:39:37.186782
2025-01-01 00:00:00.000000	58124	City of Winter Park - (FL)	FL	17	0	∅	early_release	2026-09-29 00:39:37.186782
2025-01-01 00:00:00.000000	56146	Black Hills Colorado Electric, LLC	CO	147	0	∅	early_release	2026-09-29 00:39:37.186782
2025-01-01 00:00:00.000000	55982	Heart of Texas Electric Coop	TX	66	∅	∅	early_release	2026-09-29 00:39:37.186782
2025-01-01 00:00:00.000000	55959	Roughrider Electric Cooperativ	ND	148	∅	∅	early_release	2026-09-29 00:39:37.186782
2025-01-01 00:00:00.000000	55937	Entergy Texas Inc.	TX	499	∅	∅	early_release	2026-09-29 00:39:37.186782
2025-01-01 00:00:00.000000	49998	City of Berea Municipal Utility	KY	9	0	∅	early_release	2026-09-29 00:39:37.186782
2025-01-01 00:00:00.000000	44372	Oncor Electric Delivery Company LLC	TX	3874	3487	∅	early_release	2026-09-29 00:39:37.186782
2025-01-01 00:00:00.000000	40606	City of Grand Island - (NE)	NE	56	0	∅	early_release	2026-09-29 00:39:37.186782
2025-01-01 00:00:00.000000	40456	PUD No 1 of Whatcom County	WA	1	1	∅	early_release	2026-09-29 00:39:37.186782
2025-01-01 00:00:00.000000	40437	Emerald People's Utility Dist	OR	21	∅	∅	early_release	2026-09-29 00:39:37.186782
2025-01-01 00:00:00.000000	40429	American Samoa Power Authority	AS	12	∅	∅	early_release	2026-09-29 00:39:37.186782
2025-01-01 00:00:00.000000	40364	City of Courtland	AL	2	0	∅	early_release	2026-09-29 00:39:37.186782
2025-01-01 00:00:00.000000	40304	Minnesota Valley Coop L&P Assn	MN	64	0	∅	early_release	2026-09-29 00:39:37.186782
2025-01-01 00:00:00.000000	40303	Monroe County Elec Power Assn	MS	24	0	∅	early_release	2026-09-29 00:39:37.186782
2025-01-01 00:00:00.000000	40302	North East Mississippi EPA	MS	49	0	∅	early_release	2026-09-29 00:39:37.186782
2025-01-01 00:00:00.000000	40293	Northwestern Rural E C A, Inc - (PA)	PA	40	40	∅	early_release	2026-09-29 00:39:37.186782
2025-01-01 00:00:00.000000	40292	REA Energy Coop Inc	PA	70	∅	∅	early_release	2026-09-29 00:39:37.186782
2025-01-01 00:00:00.000000	40290	Tri-County Rural Elec Coop Inc (PA)	PA	47	42	∅	early_release	2026-09-29 00:39:37.186782

Coverage

0.3% complete4,371 gap days13 days with data

Show coverage history

Coverage: 0.3%Days with data: 13Gaps: 4,371

2025

2024

2023

2022

2021

2020

2019

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2014

2013

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