Number of and total power consumption of advertising displays

02 February 2010

Our Ref: IRV-090-0910     

Dear Mr Carter

Thank you for your email of 02 February 2010 in which you requested an
internal review of the handling of your information access request.

Having spoken to London Underground I understand that a response will be
sent by tomorrow. On receipt of this request, if you still require a
review either of the information provided or in relation to the handling
of the request please let me know.

Yours sincerely

Matthew Towey | Compliance Adviser
Information Access & Compliance Team | Corporate Governance | Transport
for London

5th Floor, Windsor House, 42-50 Victoria Street, London SW1H 0TL
T: 020 7126 3063/ auto 63063

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Our Ref : 1005682728

Date : 02.02.2010

Mr J Carter

[FOI #25276 email]

Dear Mr Carter

Thank you for your email received by London Underground. You asked for
information about the number of and total power consumption of advertising
displays

Your request has been considered under the requirements of the Freedom of
Information Act and I can confirm that we do hold the information you
require.

Please find below the calculation for C02 omissions for LCDs and DEPs
provided by our contactor CBS Outdoor (CBSO), who have detailed the full
calculation.

These power figures are from the manufacturer’s specifications and are
based on the assumption of full power, however CBSO do not operate at this
level constantly.

DEP (Plasma/Flat screens)

1278 DEPs

- Each DEP is rated 0.16 kw

-To convert kw to kw/h multiply by 18 hours (based on 6am till midnight
operation) = 2.88 kw/h used per dep per day

-Multiply the 2.88 kw/h by 1278 units = 3681 kw/h used for all deps each
day

-To get kw/h per year multiply the 3681 kw/h by 365 days = 1,343,434 kw/h
used per year

-To get the C02 footprint you’d multiply the 1,343,434 by a conversion
factor of 0.52

= 698,585 kg c02 per year

-Finally, divide the 698,585kg by 1000 to get Tonnes = 698 Tonnes CO2
emitted per year (1278 DEPs switched on for 18hrs per day)

LCD

225 LCDs

-Each LCD rated 0.65 kw

-0.65kw x 18 hours = 11.7 kw/h per day for 1 LCD

-11.7 kw/h x 225 LCDs = 2,633 kw/h per day for all LCDs

-2,633 kw/h x 365days = 960,863 kw/h per year

-Multiply the 960,863 by the co2 conversion factor (0.52) to get:-

-499,649 kg C02 per year

-Finally divide the 499,649 kg by 1000 to get Tonnes = 499 Tonnes C02
emitted per year (225 LCDs switched on 18 hrs per day)

We cannot provide a like for like comparison for paper advertising
displays. Calculating the C02 from paper is different and not a like for
like comparison (the C02 conversion factor differs based on what type of
fossil fuel has been used for the energy source-for digital I used the
standard 0.52 conversion factor for electricity consumption).With paper
you’d have to do a lifecycle analysis and account for co2 emitted in
the various stages such as milling, transport, printing, delivery from
printer to CBSO etc.

I am also attaching a link to our website which provide our environmetal
and carbon foot print reports which I hope you will find useful.

[1]http://www.tfl.gov.uk/corporate/modesoft...

If this is not the information you are looking for, or if you are unable
to access it for some reason, please do not hesitate to contact me on
0845 3309880.

Please see the attached information sheet for details of your right to
appeal as well as information on copyright and what to do if you would
like to re-use any of the information we have disclosed.

Yours sincerely

Shirley Xavier

Your right to appeal

If you are dissatisfied with the way TfL has handled your information
request, you can ask us to conduct an internal review of our decision. The
internal review will be conducted by someone who was not involved in the
processing of your original request, in accordance with the complaints
procedure published on our website at www.tfl.gov.uk/foi

Requests for internal review should be addressed to:

Head of Information Access and Compliance

Floor 5, Windsor House

42-50 Victoria Street

London

SW1H 0TL

E-mail: [email address]

Complaints to the Information Commissioner

If, following theinternal review, you remain dissatisfied with the way TfL
has handled your request, then you can take your complaint to:

Information Commissioner’s Office

Wycliffe House

Water Lane

Wilmslow

Cheshire

SK9 5AF

A complaint form is available on the Information Commissioner’s Office
website at

[2]www.ico.gov.uk

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Any copyright in the material provided with this response is owned by TfL
or one of its subsidiary companies unless otherwise stated. The disclosure
of information does not give the person or organisation who receives it an
automatic right to re-use it in a way that would otherwise infringe
copyright (for example, by making copies, publishing it, or issuing copies
to the public). Brief extracts of the material may be reproduced under the
fair dealing provisions of the Copyright, Designs and Patents Act 1998
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Requests for re-use will be considered in accordance with the Re-use of
Public Sector Information Regulations 2005.

DO NOT DELETE.............................
{ticketno:[645483]}
DO NOT DELETE.............................

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Dear Mr Carter

Further to my email of 02 February 2010 I understand that a response to
your request has now been sent. I would be grateful if you would let me
know whether you still require an internal review.

Kind regards

Matthew Towey | Compliance Adviser
Information Access & Compliance Team | Corporate Governance | Transport
for London

5th Floor, Windsor House, 42-50 Victoria Street, London SW1H 0TL
T: 020 7126 3063/ auto 63063

From: FOI
Sent: 02 February 2010 14:40
To: '[FOI #25276 email]'
Subject: RE: Internal review of Freedom of Information request - Number of
and total power consumption of advertising displays

02 February 2010

Our Ref: IRV-090-0910

Dear Mr Carter

Thank you for your email of 02 February 2010 in which you requested an
internal review of the handling of your information access request.

Having spoken to London Underground I understand that a response will be
sent by tomorrow. On receipt of this request, if you still require a
review either of the information provided or in relation to the handling
of the request please let me know.

Yours sincerely

Matthew Towey | Compliance Adviser
Information Access & Compliance Team | Corporate Governance | Transport
for London

5th Floor, Windsor House, 42-50 Victoria Street, London SW1H 0TL
T: 020 7126 3063/ auto 63063

show quoted sections