Power Bill Facts

Electricity providers in Oglala Lakota County, South Dakota

4 utilities list the county in their service territory for 2024. Population: 13,338.

Annual file
Form EIA-861, 2024 final
ZIP Codes in the county
11

Providers

Utilities that list Oglala Lakota County in their service territory, with their 2024 figures for South Dakota
UtilityTypeResidential customersAverage price cents per kWhAverage bill dollars per monthSAIDI minutes, with major event daysSAIDI minutes, without major event days
West River Electric Assn IncElectric cooperative18,42314.25$127.8543.543.5Add
Black Hills Electric Coop, IncElectric cooperative9,22714.76$163.70228.7102.0Add
LaCreek Electric Assn, IncSmall utility: EIA has no residential priceElectric cooperative6,665n/an/an/an/a
Nebraska Public Power DistrictPublic power district1,0449.73$122.05n/an/aAdd

The order is by residential customers in South Dakota. Each figure is for all customers of the utility in South Dakota. EIA has no figure for one county. A small utility files a short form with totals only, so it has no residential price.

Revenue for all sectors of the small utilities that file the short form, 2024:

  • LaCreek Electric Assn, Inc: 11.76 cents per kWh

Average price of electricity to ultimate consumers represents the cost per unit of electricity sold and is calculated by dividing electric revenue from ultimate consumers by the corresponding sales of electricity.

The average price of electricity to ultimate consumers reported in this publication by sector represents a weighted average of consumer revenue and sales, and does not equal the per kWh rate charged by the electric power industry participant to the individual consumers.

EIA's words. Source: U.S. Energy Information Administration, Electric Power Monthly, Technical notes, section "Form EIA-861" (March 2024). "This publication" is the Electric Power Monthly.

In plain words: the average price is revenue divided by sales. It is not the rate on a rate schedule. The annual figures on this page are for 2024. Monthly data through .

Oglala Lakota County beside South Dakota and the US

Form EIA-861, 2024

Utilities that list Oglala Lakota County, beside South Dakota and the US, 2024
FigureUtilities that list Oglala Lakota County, medianSouth DakotaUnited States
Average residential price (cents per kWh)14.2512.8616.48
Average monthly bill (dollars per month)$127.85$127.81$142.26
SAIDI with major event days (minutes, median of utilities)136.173.7184.5
SAIDI without major event days (minutes, median of utilities)72.865.199.8
Utilities (number)4201,413

4 utilities list Oglala Lakota County in the service territory that they reported to EIA for 2024. The table at the top of this page shows each one.

3 of them have an average residential price. These prices were between 9.73 and 14.76 cents per kilowatt-hour (kWh) in 2024.

The South Dakota average was 12.86 cents per kWh in 2024. The US average was 16.48 cents per kWh. Each price is for all customers of the utility in South Dakota, not for the county only.

2 of the utilities reported outage minutes (SAIDI) for 2024. With major event days, the median was 136.1 minutes (about 2 hours 30 minutes) for each customer. The median for all South Dakota utilities was 73.7 minutes.

The Census Bureau estimate of the population of the county is 13,338. EIA has no count of customers for one county. The utility and the state utility commission have the service area for an address.

Outage minutes that the utilities reported

SAIDI, Form EIA-861, 2024

  • West River Electric Assn Inc43.5 minutesSD median: 73.7 minutes
  • Black Hills Electric Coop, Inc228.7 minutesSD median: 73.7 minutes

Minutes without power for each customer in 2024, with major event days. A pale bar is the figure without major event days. Each figure is for the whole system of the utility, not for Oglala Lakota County only.

ZIP Codes in Oglala Lakota County

Census 2020 ZIP Code Tabulation Areas

A ZIP Code can cross a county line. Each link opens the lookup for that ZIP Code.

Counties near Oglala Lakota County

Counties that share a ZIP Code with Oglala Lakota County

Next in the list of South Dakota counties

Official channels

EIA lists utilities by county, not by address. The state utility commission and the utilities have the service area maps.

Cite this page

Power Bill Facts. Electricity providers in Oglala Lakota County, South Dakota. https://powerbillfacts.com/county/south-dakota/oglala-lakota/ Source: U.S. Energy Information Administration, Form EIA-861 (2024), service territory and sales files. Data through . Page made .

Where the figures come from

Source: U.S. Energy Information Administration, Form EIA-861 for 2024, final release: service territory, sales, reliability and short form files. State and US averages: Form EIA-861M workbook. Population: U.S. Census Bureau, Vintage 2025. ZIP Codes: Census 2020 ZIP Code Tabulation Area to county relationship file. These are US government works in the public domain.

Questions about electricity in Oglala Lakota County

Which utility for Oglala Lakota County has the most customers?
West River Electric Assn Inc had 18,423 residential customers in South Dakota in 2024. That is the largest number among the 4 utilities. The number is for the state. EIA has no number for one county.
What is the average monthly bill of the utilities for Oglala Lakota County?
The average monthly bills of 3 of the utilities were between $122.05 and $163.70 in 2024. The South Dakota average was $127.81. The US average was $142.26.
How many minutes without power did the utilities for Oglala Lakota County report?
2 utilities on the list reported outage minutes for 2024. Without major event days, the median was 72.8 minutes for each customer. With major event days, the median was 136.1 minutes (about 2 hours 30 minutes). Each figure is for the whole system of a utility, not for the county only.
How many ZIP Codes are in Oglala Lakota County?
11 ZIP Code areas have land in Oglala Lakota County, from the Census Bureau file for 2020. A ZIP Code can cross a county line. The ZIP Code lookup on the home page shows the utilities for one ZIP Code.