Cloud Peak Energy CEO to Speak at the Morgan Stanley Global Metals & Mining 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,
announced that Colin Marshall, Cloud Peak Energy′s President and Chief
Executive Officer, will speak at the Morgan Stanley Global Metals &
Mining Conference at 2:40 p.m. ET on Thursday, November 17, 2011, in New
York City.

Mr. Marshall′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 90 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 coal producers in the United States. As one of the safest
coal producers in the nation, Cloud Peak Energy specializes in the
production of low sulfur, sub-bituminous coal. The company owns and
operates three surface coal mines in the Powder River Basin, the lowest
cost major coal producing region in the nation. The Antelope mine and
Cordero Rojo mine are located in Wyoming and the Spring Creek mine is
located near Decker, Montana. With approximately 1,550 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 percent of the nation′s electricity.

Cloud Peak Energy Inc.

Karla Kimrey, 720-566-2932

Vice
President, Investor Relations