Buildings involved in the programme are used by the Metropolitan Police Authority, Transport for London and the London Fire Brigade and include operational fire and police stations, head offices and listed buildings.
A further 58 buildings within these groups are now being assessed. The aim is to cut climate change emissions by 25%.
From this week, Wembley Police Station will have a range of measures installed to boost energy efficiency and save money, following a detailed eco-audit by leading energy services company, Dalkia.
This will include:
* Solar panels;
* Solar film fitted on windows to reflect sunshine and to control temperature reducing the need for air conditioning
* Replacement of the ageing boilers;
* Energy-efficient lighting;
* Voltage stablisation to reduce incoming energy from the grid by 50%;
* Ventilation plant for staff areas;
* Combined Heat and Power (CHP) system.
Mayor of London, Boris Johnson, said: "This marks the start of an innovative programme to slash carbon emissions in the same way across a wide range of public buildings in the Greater London Authority group, which will save a million pounds per year off the city’s fuel bills and help to tackle climate change."
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