
Electricity Rates in Watertown, SD
Average electricity cost, utility comparison, and solar savings potential for Watertown homeowners.
Watertown Electricity Cost Overview
The average residential electricity rate in Watertown, SD is $0.12 per kWh, which is 25% below the national average of $0.16/kWh. Homeowners in Watertown pay an average of $97 per month for electricity, based on typical usage of 806 kWh per month.
Electricity rates in Watertown are determined by the local utility providers that serve the area. Rates can vary depending on your specific utility, usage level, and time of use.
Electric Utilities Serving Watertown
| Utility Company | Avg Rate ($/kWh) | Est. Monthly Bill |
|---|---|---|
| Xcel Energy | $0.12 | $97 |
| Black Hills Energy | $0.12 | $97 |
| East River Electric | $0.11 | $89 |
How Solar Compares to Watertown Electricity Rates
Without Solar
- Monthly bill: $97
- Annual cost: $1,164
- 25-year cost: $29,100
- Rate trend: Rising 2-5% annually
With Solar
- Monthly savings: $74
- Annual savings: $888
- 25-year savings: $24,000
- Rate: Locked in for 25+ years

Electricity Rates FAQ - Watertown, SD
The average residential electricity rate in Watertown is $0.12 per kilowatt-hour (kWh), which is 25% below the national average of $0.16/kWh. The average monthly electric bill for Watertown homeowners is approximately $97.
With solar panels, Watertown homeowners can reduce their electricity costs by approximately 76%, saving around $74 per month or $24,000 over 25 years. The 30% federal tax credit further reduces the upfront cost of going solar.
The major electric utilities serving the Watertown area include Xcel Energy, Black Hills Energy, East River Electric. Rates vary between providers, so your exact cost depends on your utility and usage level.
Yes, electricity rates in Watertown and across South Dakota have been increasing, following national trends of 2-5% annual increases. This makes solar panels an increasingly attractive option since they lock in your energy costs for 25+ years.
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