Cloud Peak Energy Executive to Speak at Raymond James 4th Annual Coal Conference

Cloud Peak Energy Inc. (NYSE:CLD), one of the largest U.S. coal
producers and the only pure-play Powder River Basin (PRB) coal company,
today announced that Tom Nelson, Director, Trading and Revenue
Management, will speak at the Raymond James 4^th Annual Coal
Conference at 11:30 a.m. (EDT) on Tuesday, June 19, 2012 in New York,
New York.

Mr. Nelson′s presentation will be webcast live and can be accessed at
the following address:

www.cloudpeakenergy.com/investor-relations/webcasts-and-presentations.
A replay of the webcast will be available at the same URL for seven days.

For additional investor information, please visit the investor relations
section of the Cloud Peak Energy website:

www.cloudpeakenergy.com/investor-relations.

About Cloud Peak Energy ^?

Cloud Peak Energy Inc. (NYSE:CLD) is headquartered in Wyoming and is one
of the largest U.S. coal producers and the only pure-play PRB coal
company. As one of the safest coal producers in the nation, Cloud Peak
Energy specializes in the production of low sulfur, subbituminous coal.
The company owns and operates three surface coal mines in the PRB, the
lowest cost major coal producing region in the nation. The Antelope and
Cordero Rojo mines are located in Wyoming and the Spring Creek mine is
located near Decker, Montana. With approximately 1,600 employees, the
company is widely recognized for its exemplary performance in its safety
and environmental programs. Cloud Peak Energy is a sustainable fuel
supplier for approximately 4% of the nation′s electricity.

Cloud Peak Energy Inc.

Karla Kimrey, 720-566-2900

Vice
President, Investor Relations