Stewards of the iconic buildings and grounds of Capitol Hill since 1793.

Featured

Winston Churchill Bust is made of bronze and was unveiled in a ceremony at the U.S. Capitol on October 30, 2013. The bust is located in the small House Rotunda on the first floor of the U.S. Capitol.
The bronze bust of Sir Winston Churchill (1874-1965) was unveiled in a...

Featured

A virtual Map of Capitol Hill from above
View a map of the U.S. Capitol and other buildings and grounds cared for by the...

Featured

East Front of the U.S. Capitol Building
AOC’s annual Performance and Accountability Report provides the results of the...

Featured

Work Photography of a Worker repairing the Hart Roof at sunset.
Construction activities for the repair and replacement of the Hart Senate...

What's New

AOC Project Wins National CMAA Award

Friday, October 17, 2008

The annual Construction Management Project Achievement Awards program recognizes outstanding achievement in the practice of construction management. The West Refrigeration Plant Expansion Project was recognized as "Best Infrastructure Project with Constructed Value Less Than $100 million."

"It is quite an honor to have this national recognition bestowed on this important AOe project," said Acting Architect of the Capitol Stephen T. Ayers, AlA. "'The AOe team did an outstanding job on this critical project which will enable significant energy savings and increase capacity."

The AOC expanded the West Refrigeration Plant to reliably meet the future cooling requirements of the Capitol complex. This was necessary due to the advanced age of the East Refrigeration Plant - some of the equipment there dates back 50 years or more - and to meet the increased load of the Capitol Visitor Center and other building additions, renovations, and modernizations. The expansion will also increase overall Plant efficiency.

The U.S. Capitol Power Plant was originally built in 1909 to supply steam for heating and electricity for the Russell Senate Office Building and the Cannon House Office Building. In the ensuing years, additional facilities were added to the Power Plant load increasing the demands for steam and chilled water to cool the buildings. In the early 1950s, the Power Plant eliminated electrical energy production. Currently, the Capitol Power Plant serves 18 facilities in the Capitol complex including the House and Senate Office buildings, the Supreme Court, and the Library of Congress.

Since 1999, CMAA has been presenting its Project Achievement Awards to recognize instances in which professional Construction or Program Management has made a significant contribution to the successful completion of a challenging project or program.