Cloud Peak Energy Inc. announces schedule for second quarter results

Gillette, WY, July 26, 2010 – Cloud Peak Energy Inc. (NYSE:CLD), the third-largest U.S. coal producer and the only pure-play PRB coal company, plans to announce its second quarter 2010 financial results on August 5, 2010 after the markets close.

A conference call with management is scheduled at 5:00 p.m. EDT on August 5, 2010 to review the results and current business conditions. The call will be webcast live over the internet from the Company's website at www.cloudpeakenergy.com 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 866-383-8119 (domestic) or 617-597-5344 (international) and entering passcode 46965557.

Following the live webcast, a replay will be available at the same URL on the Company's website for 7 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 passcode 54878133. 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 the third largest coal producer in the United States. 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 Powder River Basin, 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 1,500 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 Announces Second Quarter Production Results

Gillette, WY, July 13, 2010 – Cloud Peak Energy Inc. (NYSE:CLD) announced that it has submitted its second quarter 2010 coal production to Rio Tinto plc on behalf of Cloud Peak Energy Resources LLC.  This information was provided to Rio Tinto pursuant to the Master Separation Agreement entered into in connection with the November 2009 initial public offering of Cloud Peak Energy Inc. and related separation and transition transactions. Cloud Peak Energy Inc. owns a 51.7% controlling interest in Cloud Peak Energy Resources LLC. Rio Tinto owns the remaining interest in Cloud Peak Energy Resources LLC.

The following table provides Cloud Peak Energy’s coal production for the second quarter 2010 and certain historical periods:

Production ('000 short tons)

* Production for Decker represents only the 50% interest held by Cloud Peak Energy Resources LLC

About Cloud Peak Energy™

Cloud Peak Energy Inc. (NYSE:CLD) is headquartered in Wyoming and is the third largestU.S. coal producer 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, sub-bituminous 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 mine and Cordero Rojo mine are located in Wyomingand the Spring Creek mine is located near Decker, Montana. With approximately 1,500 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. Appoints Todd A. Myers as Head of Business Development

Gillette, WY, July 6, 2010 – Cloud Peak Energy Inc. (NYSE:CLD), the third-largest U.S. coal producer and the only pure-play Powder River Basin (PRB) coal company, announced that Todd A. Myers joined the company as Senior Vice President, Business Development on July 6, 2010.

Myers has 14 years of experience with Westmoreland Coal Company and was most recently President of Westmoreland Coal Sales Company. Myers served in other senior leadership positions with Westmoreland in marketing and business development. Myers also spent five years with RDI Consulting, a leading consulting firm in the energy industry, where he led the environmental consulting practice. Myers earned his Bachelor of Arts in political science from Pennsylvania State University in University Park, Pennsylvania, and his Masters in International Management from the Thunderbird Graduate School of Global Management in Glendale, Arizona.

President and Chief Executive Officer Colin Marshall said, "Todd brings a strong background in the coal industry and broader energy sector. We welcome Todd as a member of our senior management team and look forward to his leadership in helping shape and execute Cloud Peak Energy’s growth strategy."

About Cloud Peak Energy™

Cloud Peak Energy Inc. (NYSE:CLD) is headquartered in Wyoming and is the third largest U.S. coal producer 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 1,500 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’s Antelope Mine receives reclamation award from Wyoming Department of Environmental Quality

On June 18, Cloud Peak Energy’s Antelope Mine, located near Douglas, Wyoming, received a prestigious reclamation award from the Wyoming Department of Environmental Quality Land Quality Division. This Excellence in Surface Mining Award was received for shrub development on reclaimed lands establishing wildlife habitat.

The Antelope Mine has established consistent shrub areas, including sagebrush stands, by application of unique land form designs and shrub-specific seeding technologies using a phased approach.

Colin Marshall, President and CEO of Cloud Peak Energy, noted that: “The company greatly appreciates this award and its recognition of the value that we place on establishing quality reclamation and post-mining wildlife habitat.”

The Antelope Mine has established a system of carefully evaluating topographic diversity in the post-mine landscape and identifying areas with the highest shrub establishment potential. Then features such as rock structures and ridgeline breaks are established in the reclamation surface to enhance moisture collection. Lastly, advanced seeding technology is applied that targets appropriate shrub species for each site by using specific planting dates, planting rates and specialized seeding equipment.

About Cloud Peak Energy™

Cloud Peak Energy Inc. (NYSE: CLD) is headquartered in Wyoming and is the third largest U.S. coal producer 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, sub-bituminous 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 1,500 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 Announces Election Results from Annual Meeting of Stockholders

GILLETTE, Wyo., June 8, 2010 -- Following its annual meeting of stockholders today, Cloud Peak Energy Inc. (NYSE: CLD), the third-largest U.S. coal producer and the only pure-play Powder River Basin (PRB) coal company, announced that the company’s stockholders have re-elected its Chairman Keith Bailey and Director William Owens to its Board of Directors to serve until Cloud Peak Energy’s 2013 annual meeting.

Cloud Peak Energy also announced that its stockholders approved the ratification of the appointment of PricewaterhouseCoopers LLP as the company’s independent registered public accounting firm for fiscal 2010.

Additional information about these proposals can be found in the company's proxy statement for the annual meeting, which was mailed to stockholders and filed with the U.S. Securities and Exchange Commission.

The voting results are based on the preliminary report of the company’s inspector of election. Final results will be included in the company’s current report on Form 8-K to be filed within four business days of the annual meeting.

About Cloud Peak Energy™

Cloud Peak Energy Inc. (NYSE: CLD) is headquartered in Wyoming and is the third largest U.S. coal producer 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, sub-bituminous 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 mine and Cordero Rojo mine are located in Wyoming and the Spring Creek mine is located near Decker, Montana. With approximately 1,500 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.