Vanguard Credit Risk Management Software Implemented at Black Hills

February 24, 2010 — Paragon Consulting Corporation, a leading provider of credit risk management software and consulting services to participants in the competitive energy markets throughout North America, today announced the implementation of its Vanguard Credit Risk Management System at Black Hills Corporation (NYSE: BKH).

Paragon’s Vanguard Credit Risk Management System puts into the hands of energy market participants, like Black Hills Corp., a highly integrated tool to proactively organize, track, and manage credit for all transaction types and commodities. Credit Managers can use the software to monitor credit exposure across all internal and external entities as well as across all transacted commodities.

“We are very excited about seeing Black Hills fully utilizing the capabilities of the Vanguard system,” said Kevin Gerold, Paragon President and Founder. “This success is the result of our strong business partnership with Black Hills and our commitment to working together to completely understand and facilitate Black Hills’ business needs. We look forward to a continuing, fruitful relationship.”

About Paragon Consulting Corporation

Paragon Consulting Corporation is a leading provider of credit risk management software and consulting services to participants in the competitive energy markets throughout North America, including utilities, electrical power generating companies, oil and gas companies, and energy marketers. Paragon offers a software solution and associated services to enable energy market participants to manage credit risk across multiple energy commodities.