BKH Black Hills Corp

Black Hills Corp. (NYSE: BKH) today announced that its electric utility subsidiary in Colorado received approval from the Colorado Public Utilities Commission for new rates. The approved new rates will provide recovery of approximately $370 million of system investments since the utility’s last general rate filing in 2016 and inflationary impacts on costs to serve customers.

The approved new rates provide approximately $17.0 million of new annual revenues based on a weighted average cost of capital of 6.90% with a capital structure in a range of 47% to 49% equity and 51% to 53% debt, and a return on equity in a range of 9.3% to 9.5%. The new rates were effective on March 22, 2025.

As part of the regulatory process, the company has the opportunity to file a request for rehearing, reargument or reconsideration with the commission by April 7, 2025.

Black Hills Corp.Black Hills Corp. (NYSE: BKH) is a customer-focused, growth-oriented utility company with a tradition of improving life with energy and a vision to be the energy partner of choice. Based in Rapid City, South Dakota, the company serves 1.35 million natural gas and electric utility customers in eight states: Arkansas, Colorado, Iowa, Kansas, Montana, Nebraska, South Dakota and Wyoming. More information is available at www.blackhillscorp.com.

Investor RelationsSal Diazinvestorrelations@blackhillscorp.com

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Caution Regarding Forward-Looking StatementsThis news release includes “forward-looking statements” as defined by the Securities and Exchange Commission, or SEC. We make these forward-looking statements in reliance on the safe harbor protections provided under the Private Securities Litigation Reform Act of 1995. All statements, other than statements of historical facts, included in this news release that address activities, events or developments that we expect, believe or anticipate will or may occur in the future are forward-looking statements, including anticipated revenues from the new rate increase. These forward-looking statements are based on assumptions which we believe are reasonable based on current expectations and projections about future events and industry conditions and trends affecting our business. However, whether actual results and developments will conform to our expectations and predictions is subject to a number of risks and uncertainties that, among other things, could cause actual results to differ materially from those contained in the forward-looking statements, the risk factors described in Item 1A of Part I of our 2024 Annual Report on Form 10-K filed with the SEC, and other reports that we file with the SEC from time to time.

New factors that could cause actual results to differ materially from those described in forward-looking statements emerge from time-to-time, and it is not possible for us to predict all such factors, or the extent to which any such factor or combination of factors may cause actual results to differ from those contained in any forward-looking statement. We assume no obligation to update publicly any such forward-looking statements, whether as a result of new information, future events or otherwise.