Black Hills Corporation is a Rapid City, South Dakota diversified energy company that is an electric and gas utility in South Dakota, Montana, Wyoming, Colorado, Arkansas, Kansas, Nebraska, and Iowa.

[3] On November 25, 2002, Black Hills Corporation announced that its new independent public accountants, Deloitte & Touche LLP, had completed the audit of Black Hills Corporation's 2001, 2000 and 1999 financial statements that were originally audited by Arthur Andersen LLP.

[11] As of June 2017, Black Hills Energy in Colorado obtains 19 percent of its electricity from renewable resources, with the rest coming from natural gas.

By 2020, in order to comply with Colorado state laws, the company must generate at least 30 percent of its electricity from renewable resources.

Rodriguez, asserting her company's dedication to meeting this goal, said, "Developing renewable energy at a reasonable cost is important to the communities we serve and allows us to continue providing customers with the safe, reliable energy they've come to expect.

"[11] In August 2018, Pueblo city council unanimously voted to spend $122,000 on a consulting firm, selected by the Electric Utility Commission from eight proposals, to explore its options to prematurely exit the Black Hills franchise agreement by 2020, perhaps forming its own municipal energy operation.

[13] The company is the electric utility for 64,200 customers between Rapid City, South Dakota and New Castle, Wyoming as well as southeastern Montana via its Black Hills Power subsidiary.