Residential electricity prices in 21150 in October 2025 averaged approximately 22.30 cents per kilowatthour (¢/kWh), which was about 24% more than the national average rate of 17.98 ¢/kWh (October 2025). [1]
→ Electricity rates listed as zero are not currently available.
See how electricity costs in 21150 differ from the average electricity costs for the U.S. overall. [1]
On a year-over-year basis - from September 2024 to September 2025 - residential electricity prices in 21150 increased approximately 15%, from 18.36 ¢/kWh to 21.05 ¢/kWh. [1]
→ Electricity rates listed as zero are not currently available.
Residential natural gas prices in 21150 in September 2025 averaged 24.66 dollars per thousand cubic feet ($/Mcf), which was approximately 0% more than the national average rate of 24.56 $/Mcf (September 2025). [2]
→ Natural gas prices listed as zero are not currently available.
See the chart below to see a comparison of Simpsonville natural gas prices against U.S. average prices. Compare 21150 (Simpsonville, MD) natural gas costs to overall U.S. average costs. [2]
On a year-over-year basis, residential natural gas prices in Simpsonville (Maryland) decreased approximately 100%, from 25.55 $/Mcf (August 2024) to 0.00 $/Mcf (August 2025). [2]
→ Natural gas prices listed as zero are not currently available.
The ZIP code of 21150 (Simpsonville, MD) has an average annual solar radiation value of 5.01 kilowatt hours per square meter per day (kWh/m2/day). Compare Simpsonville 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 Simpsonville solar radiation levels against other areas in the U.S. Compare Simpsonville 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 ZIP code 21150 is associated with the city of Simpsonville, MD in Howard County. [4]
To learn more about utility rates & usage in 21150, or for other information related to utilities in Maryland, visit the U.S. Energy Information Administration.
Nuclear energy sources provided more than 20 percent of United States electricity in 2011.
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