Utility Providers in Sinai, South Dakota

Sinai is served by 21 utility providers across 4 categories covering 1 ZIP code in Brookings County.

Brookings County · Updated May 2026

Utility rates in Sinai vs. US average

Electricity
12.0¢/kWh
↓ 27% below US average (16.5¢)
↓ 7% below SD state average (12.9¢)
Natural gas
$9.32/Mcf
↓ 36% below US average
Local electricity rate from NREL Utility Rate Database (2023), averaged across Sinai-area providers. State and US electric averages from EIA Form 861 (2024). Natural gas prices from EIA Form 176 (2024, $/Mcf). US avg electricity: 16.5¢/kWh · US avg gas: $14.50/Mcf.

Typical monthly utility bills in Sinai

Electricity$100-$149 (12.0¢–12.0¢/kWh)
Natural gas$250+
Water & sewer~$43/month

Figures from U.S. Census ACS 5-year estimates, reflecting households that pay utilities separately from rent. In dense urban areas where heat or hot water is often included in rent, these numbers represent the subset of residents who pay directly.

How Sinai heats its homes

4%
30%
66%

4% natural gas · 30% electricity · 66% other fuels

Electric rates in Sinai

Residential rates range from 12.0¢ to 12.0¢ per kWh.

Sinai
12.0¢/kWh
U.S. avg
16.5¢/kWh

Providers include City of Brookings - (SD), City of Volga - (SD), Otter Tail Power Co, Sioux Valley SW Elec Coop.

This is 27% below the national average of 16.5¢/kWh.

Internet providers in Sinai

Sinai has limited broadband coverage.

ITC
1,000 Mbps
Fiber
Verizon
50 Mbps
Fixed Wireless

Availability varies by address. Based on FCC Broadband Data Collection filings.

Electric 4 providers

City of Brookings - (SD)
City of Volga - (SD)
Otter Tail Power Co
Sioux Valley SW Elec Coop

Water 13 providers

BIG SIOUX COMMUNITY WATER SYSTEM
BROOKINGS MUNICIPAL UTILITIES
BROOKINGS-DEUEL RURAL WATER SYSTEM
KINGBROOK I RURAL WATER SYSTEM
NORTH BROOKINGS WATER AND SANITARY D
RED WILLOW COLONY
SOUTHBROOK ESTATES
UNIVERSITY ESTATES

Sewer 2 providers

SINAI - CITY OF

Internet 2 providers

ITC
Fiber up to 1,000 Mbps
Verizon
Fixed Wireless up to 50 Mbps

ZIP codes in Sinai, SD

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Disclaimer: Provider information is sourced from federal databases including HIFLD, EPA SDWIS, FCC Broadband Data, and EIA-861. Utility cost estimates are from the U.S. Census Bureau American Community Survey 5-Year Estimates. Local electric rates are based on 2023 NREL Utility Rate Database data; state and US averages are from EIA Form 861 (2024). Coverage areas are approximate and may not reflect recent changes. Please verify directly with your provider.

Data sources: U.S. Census Bureau, NREL, EIA-861, HIFLD, EPA, FCC. Last updated: May 2026.