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Capitol Power Plant
38°52′58.35″N 77°0′27.06″W / 38.8828750°N 77.0075167°W
The Capitol Power Plant is a fossil-fuel burning power plant which provides steam and chilled water for the United States Capitol, the Supreme Court, the Library of Congress and 19 other buildings in the Capitol Complex. Located at 25 E St SE in southeast Washington, D.C., the CPP was the only coal-burning power plant in the District of Columbia, and it now mostly uses natural gas. The plant has been serving the Capitol since 1910, and is under the administration of the Architect of the Capitol (see 2 U.S.C. § 2162).
According to the U.S. Department of Energy, the facility released 118,851 tons of carbon dioxide in 2007. In 2009, it switched to using natural gas, unless coal was needed for backup capacity. Though it was originally built to supply the Capitol complex with electricity as well, the plant stopped generating electricity in 1951. In 2013, it was announced that the Capitol Power Plant would add a cogeneration plant that will use natural gas in a combustion turbine to efficiently generate both electricity and heat for steam, thus further reducing emissions. A 7.5 megawatt cogeneration facility was completed at the CPP in 2018. In 2021 it produced 32,000 tons of carbon dioxide.
The power plant was constructed under the terms of an act of Congress passed on April 28, 1904, and authorized in order to support two new office buildings that were then being planned. Now known as the Cannon House Office Building and the Russell Senate Office Building, these new offices required a substantial increase in energy supplied to Capitol Hill. In addition, the U.S. Capitol and the Library of Congress would also receive power from the new plant, along with all future buildings to be constructed on the Capitol campus.
Originally called the "Heating, Lighting, and Power Plant," the Capitol Power Plant was one of the earliest 25 Hz alternating current electric-generating facilities in the United States. The original steam boilers were replaced in 1923. In 1950 the steam boilers were modernized and replaced with coal-fired steam generators; at the same time, the plant's electricity generating capacity had reached its limit, and the decision was made to abandon electricity production in favor of the local electrical utility. The expansion of the plant to support additional new construction was authorized in 1958, 1970, and in the early 21st century to support the opening of the Capitol Visitor Center.
Senators from coal mining states blocked a proposal in 2000 to use cleaner fuel for the plant. Senators Mitch McConnell (Republican of Kentucky) and Robert Byrd (Democrat of West Virginia), both from coal mining states, used their influence as two of the Senate's most senior members to block this proposal. In May 2007, CNN reported that two companies, International Resources Inc. and the Kanawha Eagle mine, have a contract to supply a combined 40,000 tons of coal to the plant over the next two years. The companies gave a combined $26,300 to the McConnell and Byrd campaigns for the 2006 election.
In June 2007, Speaker of the House Nancy Pelosi announced the "Greening the Capitol" initiative. The initiative's goal is to make the Capitol carbon neutral, and the power plant is a major obstacle to achieving this objective. In November 2007, Daniel Beard, the House's Chief Administrative Officer, announced that he would purchase $89,000 worth of carbon offsets for 30,000 tons of carbon emissions. Beard made the purchase from the Chicago Climate Exchange. On February 28, 2009, Pelosi and Senate Majority Leader Harry Reid sent a letter to the Architect of the Capitol asking him to create a plan to switch the power plant entirely to natural gas by the end of 2009. This letter came just three days before a March 2009 scheduled protest (which happened despite the change).
In response to the letter from Pelosi and Reid, the Architect of the Capitol replied on May 1, 2009 that the plant had been transitioning to natural gas and was prepared to switch completely to that fuel, using coal only as a backup source. In 2008, the plant had operated on about 65% natural gas and 35% coal, compared to 58% coal in 2005. By 2011, coal use at the CPP was down to 5%.
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Capitol Power Plant
38°52′58.35″N 77°0′27.06″W / 38.8828750°N 77.0075167°W
The Capitol Power Plant is a fossil-fuel burning power plant which provides steam and chilled water for the United States Capitol, the Supreme Court, the Library of Congress and 19 other buildings in the Capitol Complex. Located at 25 E St SE in southeast Washington, D.C., the CPP was the only coal-burning power plant in the District of Columbia, and it now mostly uses natural gas. The plant has been serving the Capitol since 1910, and is under the administration of the Architect of the Capitol (see 2 U.S.C. § 2162).
According to the U.S. Department of Energy, the facility released 118,851 tons of carbon dioxide in 2007. In 2009, it switched to using natural gas, unless coal was needed for backup capacity. Though it was originally built to supply the Capitol complex with electricity as well, the plant stopped generating electricity in 1951. In 2013, it was announced that the Capitol Power Plant would add a cogeneration plant that will use natural gas in a combustion turbine to efficiently generate both electricity and heat for steam, thus further reducing emissions. A 7.5 megawatt cogeneration facility was completed at the CPP in 2018. In 2021 it produced 32,000 tons of carbon dioxide.
The power plant was constructed under the terms of an act of Congress passed on April 28, 1904, and authorized in order to support two new office buildings that were then being planned. Now known as the Cannon House Office Building and the Russell Senate Office Building, these new offices required a substantial increase in energy supplied to Capitol Hill. In addition, the U.S. Capitol and the Library of Congress would also receive power from the new plant, along with all future buildings to be constructed on the Capitol campus.
Originally called the "Heating, Lighting, and Power Plant," the Capitol Power Plant was one of the earliest 25 Hz alternating current electric-generating facilities in the United States. The original steam boilers were replaced in 1923. In 1950 the steam boilers were modernized and replaced with coal-fired steam generators; at the same time, the plant's electricity generating capacity had reached its limit, and the decision was made to abandon electricity production in favor of the local electrical utility. The expansion of the plant to support additional new construction was authorized in 1958, 1970, and in the early 21st century to support the opening of the Capitol Visitor Center.
Senators from coal mining states blocked a proposal in 2000 to use cleaner fuel for the plant. Senators Mitch McConnell (Republican of Kentucky) and Robert Byrd (Democrat of West Virginia), both from coal mining states, used their influence as two of the Senate's most senior members to block this proposal. In May 2007, CNN reported that two companies, International Resources Inc. and the Kanawha Eagle mine, have a contract to supply a combined 40,000 tons of coal to the plant over the next two years. The companies gave a combined $26,300 to the McConnell and Byrd campaigns for the 2006 election.
In June 2007, Speaker of the House Nancy Pelosi announced the "Greening the Capitol" initiative. The initiative's goal is to make the Capitol carbon neutral, and the power plant is a major obstacle to achieving this objective. In November 2007, Daniel Beard, the House's Chief Administrative Officer, announced that he would purchase $89,000 worth of carbon offsets for 30,000 tons of carbon emissions. Beard made the purchase from the Chicago Climate Exchange. On February 28, 2009, Pelosi and Senate Majority Leader Harry Reid sent a letter to the Architect of the Capitol asking him to create a plan to switch the power plant entirely to natural gas by the end of 2009. This letter came just three days before a March 2009 scheduled protest (which happened despite the change).
In response to the letter from Pelosi and Reid, the Architect of the Capitol replied on May 1, 2009 that the plant had been transitioning to natural gas and was prepared to switch completely to that fuel, using coal only as a backup source. In 2008, the plant had operated on about 65% natural gas and 35% coal, compared to 58% coal in 2005. By 2011, coal use at the CPP was down to 5%.