100 Parliament Street is shared with HM Treasury who occupy the 1 Horse Guards Road side of the building. The building was originally designed in 1898 by John McKean Brydon and completed by Sir Henry Tanner. Winston Churchill had a suite of offices on site during World War II and made his VE Day speech from the balcony of what's now called the Churchill Room. The site was listed as Grade II in 1970. 100 Parliament Street currently provides work space for around 2,000 members of staff and hosts around 4,000 visitors a month.
Our 100 Parliament Street building receives heat via the Whitehall district heating system, which serves other Government HQ Sites locally. The site has a mixture of naturally ventilated and mechanically cooled offices and rooms.
Display Energy Certificates (DECs) and Energy Performance Certificates (EPCs) in Scotland indicate the energy performance of a building. Each allocates a numerical indicator which relates to the annual CO2 emissions from the building - the lower the numerical indicator, the better the energy efficiency of that building. An energy performance operational rating of 100 would be typical for an historic building of 100 Parliament Street's type so the current rating of 83 is good.
The rating was improved from 84 in 2008 by reducing the building's core temperature from 23°C to 21°C. We are planning a further reduction from October 2010 by reducing the core temperature to 20°C, in addition to the introduction of a new Building Management System (BMS). The BMS (which typically includes heating, air conditioning, lighting and fire detection systems) will help us to improve energy efficiency and distribution further.
Since we first published the data from 100 Parliament Street, we have taken a number of additional measures to reduce carbon emissions from the building.
You can view energy consumption for our site at 100 Parliament Street, London below.
HM Revenue & Customs (HMRC) has a complex and disparate estate, from listed historical buildings to 1960s office blocks and new builds. Surveys are taking place on a building by building basis to identify no-cost and low-cost ways to reduce our carbon emissions. These include voltage optimisation; temperature adjustments similar to 100 Parliament Street and replacing halogen lights with low energy LED alternatives.
Using 100 Parliament Street as a test ground, we aim to replicate these actions to reduce energy consumption across the HMRC estate.
In addition to reducing carbon emissions from our offices, HMRC has also focused on reducing emissions from business travel. We have already exceeded our government target to reduce carbon emissions from road vehicles by 15 per cent by 2010-11 (against a baseline of 2005/6) and current data for 2009-10 shows we have reduced emissions from road vehicles by a total of 36.43 per cent. (These figures include both HMRC and its executive agency, the Valuation Office Agency.)
From November 2010, we are also running a major internal communications campaign to encourage all our staff to adopt environmentally-friendly ways of working and consider carbon emissions, as well as cost, as the department responds to the 2010 Spending Review.
