Cloud Peak Energy Inc. Annnounces Schedule for Second Quarter 2012 Results

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,
plans to announce its second quarter 2012 financial results on July 31,
2012, after the markets close.

A conference call with management is scheduled at 5:00 p.m. ET on July
31, 2012, to review the results and current business conditions. The
call will be webcast live over the internet from the Company's website
at under 'Investor Relations.? Participants should follow the instructions
provided on the website for downloading and installing the audio
applications necessary to join the webcast. Interested individuals also
can access the live conference call via telephone at 866.788.0546
(domestic) or 857.350.1684 (international) and entering pass code
38124616.

Following the live web cast, a replay will be available at the same URL
on the company′s Web site for seven days. A telephonic replay will also
be available approximately two hours after the call and can be accessed
by dialing 888.286.8010 (domestic) or 617.801.6888 (international) and
entering pass code 58093133. The telephonic replay will be available for
seven days.

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.