June 04, 2025

We requested a rate review in South Dakota

On June 4 we filed a request with the South Dakota Public Utilities Commission (PUC) for permission to increase electric rates. This request is a result of rising costs to maintain a safe and reliable system while meeting customers’ growing electricity demand as economically as possible. 

“We understand rising electric costs can be challenging, and we remain focused on managing these increases through smart investments and streamlined operations that allow us to be one of the lowest-cost providers in the nation,” said President Tim Rogelstad. “Our goal is to continue serving our customers with the safe, reliable, and cost-effective energy they depend on while navigating these challenges together.”  

SD rate case logo

The net effect of our request is an increase to rates of approximately $5.7 million. If the PUC approves the overall request as filed, the average net increase to customers would be approximately 12.5%. we last requested a rate review in South Dakota in 2018. 

Proposed rates may take effect December 1 

The filing starts a process often referred to as a rate case. During this time, the PUC reviews costs we incur to provide customers with energy and related services and then determines appropriate prices for customers using that energy. This independent, public process helps ensure transparent rate setting for all customers. 

The PUC will establish a schedule for making its decision on our request. If the PUC doesn’t issue its decision within 180 days, we can increase rates on an interim basis beginning December 1, 2025. If final rates are lower than interim rates, we would refund customers the difference with interest. If final rates are higher than interim rates, we would not collect the difference.  

Rate information, including example monthly bill impacts, and updates related to our request will be available online at otpco.com/SDRateCase. 

Options to help customers save energy and money 

We encourage customers to proactively save energy and money by: 

  • Unplugging any electronics that aren’t in use, such as gaming consoles, TVs, and home office equipment. 

  • Making low-cost and no-cost changes to reduce energy consumption, such as switching to LED lightbulbs. 

  • Participating in programs that make use of lower off-peak rates, such as thermal storage and water heating. 

Customers can find ways to reduce their electricity costs and information on payment assistance at otpco.com or by calling us at 800-257-4044. 

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