Serving Congress and the Supreme Court, preserving America's Capitol, and inspiring memorable experiences

Featured

U.S. Botanic Garden Conservatory
From jungle to desert to primeval paradise, the indoor gardens and galleries...

Featured

Guided Tours: Buildings on Capitol Hill
Official Tours of the U.S. Capitol Building are offered Monday through...

Featured

Caring for the National Garden
The Architect of the Capitol magazine, Foundations & Perspectives,...

Featured

U.S. Army Band -  Friday Evenings and some Thursday Evenings
U.S. Army Band - Friday Evenings and some Thursday Evenings - The 2014 series...

Capitol Power Plant

Employees at the Capitol Power Plant

The AOC Capitol Power Plant jurisdiction (CPP) is responsible for managing and operating the Capitol Power Plant. The Power Plant operates 24 hours per day, 365 days per year to provide steam and chilled water service to heat and cool the Capitol, the Capitol Visitor Center and 22 other facilities located on or near Capitol Hill.

Commissioned in 1910, the Power Plant originally provided the Capitol with both steam and electricity. Today, the Power Plant provides steam and chilled water utility services to both congressional and non-congressional facilities, the latter of which is provided on a reimbursable basis.

The jurisdiction procures electricity from commercial suppliers. In addition to the central steam and refrigeration plants, the jurisdiction maintains an administration building and the tunnel distribution and metering systems required to deliver these utilities. The jurisdiction is responsible for the daily care, maintenance and operation of the Power Plant facilities. In addition, the CPP continues to implement operational changes and pursues modernization efforts to ensure the most cost effective and energy-efficient operations.