About this building

Palace of Westminster

The Palace of Westminster, also known as The Houses of Parliament, has transformed and evolved over nearly a thousand years, from royal residence to the home of a modern democracy. With much of the present building dating from 1834, the Palace of Westminster contains the oldest building on the estate, Westminster Hall, built in 1097, which survived the Great Fire of 1666 along with St Stephen’s Cloister and the Chapel of St Mary Undercroft . One of the most recognisable features of the Palace is Elizabeth Tower more commonly known as “Big Ben”. Home of the chambers for the House of Lords and House of Commons, the Palace is a grade I listed building and a key feature of the Westminster World Heritage Site.

Our energy use

This graph allows everyone to access a range of data from Palace of Westminster. It's updated frequently, as we receive new data from the on-site meters.

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Building Stats

  • Year Built11th Century onwards

  • Number of floors9

  • Total usable floor area122223 m2

  • Heating TypeGas

  • No. of Occupants1580

Display Energy Certificate

Since 9 January 2013 public buildings in the UK over 500m2 have been required to display a Display Energy Certificate (DEC) prominently at all times. Display Energy Certificates were introduced by the Government in response to the EU Energy Performance of Buildings Directive which all EU member states were required to implement by January 2009.

DECs are designed to promote the improvement of the energy performance of buildings. They are based upon the actual energy performance of a building and increase transparency about the energy efficiency of public buildings. DECs use a scale from A to G with A being the most efficient and G the least. The Display Energy Certificate for Palace of Westminster is available here or by clicking the plaque on the right.

Display Energy Certificate Rating E

Study our data

Palace of Westminster shares its sustainability data so that everybody can help to identify new savings and suggest improvements. The icons below show the utility data currently available for each year.

If you have ideas on how Palace of Westminster could use energy more efficiently, please let us know!

2017

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Download 2017 data

2016

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Download 2016 data

2015

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Download 2015 data

2014

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Download 2014 data

2013

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Download 2013 data