Residential electricity prices in Castlewood, SD in March 2026 averaged approximately 14.29 cents per kilowatthour (¢/kWh), which was about 24% less than the national average rate of 18.83 ¢/kWh (March 2026). [1]
→ Electricity rates listed as zero are not currently available.
See how electricity costs in Castlewood differ from the average electricity costs for the U.S. overall. [1]
On a year-over-year basis - from February 2025 to February 2026 - residential electricity prices in Castlewood increased approximately 12%, from 11.84 ¢/kWh to 13.24 ¢/kWh. [1]
→ Electricity rates listed as zero are not currently available.
Residential natural gas prices in Castlewood in February 2026 averaged 11.29 dollars per thousand cubic feet ($/Mcf), which was approximately 25% less than the national average rate of 15.07 $/Mcf (February 2026). [2]
→ Natural gas prices listed as zero are not currently available.
See the chart below to see a comparison of Castlewood natural gas prices against U.S. average prices. Compare Castlewood natural gas costs to overall U.S. average costs. [2]
On a year-over-year basis, residential natural gas prices in Castlewood (South Dakota) increased approximately 15%, from 8.18 $/Mcf (January 2025) to 9.42 $/Mcf (January 2026). [2]
→ Natural gas prices listed as zero are not currently available.
The city of Castlewood (South Dakota) has an average annual solar radiation value of 4.92 kilowatt hours per square meter per day (kWh/m2/day). Compare Castlewood values to both low and high values in the U.S. overall: [3]
→ Solar radiation values listed as zero are not currently available.
See the chart below for a comparison of Castlewood solar radiation levels against other areas in the U.S. Compare Castlewood levels against both 1) low average solar radition levels (WA) and also 2) high average solar radiation levels (NV). [3]
→ k/m/d: kilowatt hours per square meter per day.
→ Solar radiation values listed as zero are not currently available.
Households in the United States have benefited from falling energy prices in recent years, which has driven down the cost of living.
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Penn State researchers recently examined microgrids and discovered that they may not always be a wise economic move for communities.
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Through the analysis of publicly available data filed by electricity suppliers, the CT OCC discovered that electricity customers overpaid by $58 million in 2015.
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The city of Castlewood, SD in Hamlin County has an approximate population of 627. [4]
To learn more about utility rates & usage in Castlewood, SD, or for other information related to utilities in Castlewood, visit the U.S. Energy Information Administration.
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