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

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A black and white photograph of the United States Capitol in 1846.
The history of the United States Capitol Building begins in 1793. Since then,...

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The Summerhouse on the Capitol Grounds surrounded by pink azalea flowers.
A few ideas to help you in planning a visit to Capitol Hill.

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

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Black and white photograph of Union Troops lined up in front of the Capitol in 1861
Weekdays at 3 p.m. — In honor of the 150th Anniversary of the Civil War, a...

Sustainability, Energy and Water Conservation Report

Sustainability, Energy and Water Conservation Report

The East Front of the U.S. Capitol at Dusk

The Architect of the Capitol releases an annual energy report to highlight efforts to reduce energy use.

As stewards of the U.S. Capitol and as a legislative agency, the AOC is required to meet annual reductions in energy consumption and report annual progress. The annual energy report was created to inform Congress and the American people of the AOC’s progress on meeting its efficiency goals as well as its further commitments to sustainability and water efficiency. It includes details on the AOC’s approach, achievements, and areas identified for future progress.