Residential electricity prices in Castalia, IA in December 2025 averaged approximately 12.60 cents per kilowatthour (¢/kWh), which was about 27% less than the national average rate of 17.24 ¢/kWh (December 2025). [1]
→ Electricity rates listed as zero are not currently available.
See how electricity costs in Castalia differ from the average electricity costs for the U.S. overall. [1]
On a year-over-year basis - from November 2024 to November 2025 - residential electricity prices in Castalia increased approximately 3%, from 13.18 ¢/kWh to 13.55 ¢/kWh. [1]
→ Electricity rates listed as zero are not currently available.
Residential natural gas prices in Castalia in December 2025 averaged 8.79 dollars per thousand cubic feet ($/Mcf), which was approximately 38% less than the national average rate of 14.09 $/Mcf (December 2025). [2]
→ Natural gas prices listed as zero are not currently available.
See the chart below to see a comparison of Castalia natural gas prices against U.S. average prices. Compare Castalia natural gas costs to overall U.S. average costs. [2]
On a year-over-year basis, residential natural gas prices in Castalia (Iowa) decreased approximately 1%, from 7.79 $/Mcf (November 2024) to 7.70 $/Mcf (November 2025). [2]
→ Natural gas prices listed as zero are not currently available.
Sorry, Castalia solar data is not currently available. Please check back later.
See the chart below for a comparison of Castalia solar radiation levels against other areas in the U.S. Compare Castalia 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 Castalia, IA in Winneshiek County has an approximate population of 173. [4]
To learn more about utility rates & usage in Castalia, IA, or for other information related to utilities in Castalia, visit the U.S. Energy Information Administration.
Electricity travels at the speed of light, which is more than 186,000 miles per second.
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