Energy: Television

Trade and Industry written question – answered on 27th February 2007.

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Photo of Anne Snelgrove Anne Snelgrove PPS (Rt Hon Patricia Hewitt, Secretary of State), Department of Health

To ask the Secretary of State for Trade and Industry what estimate he has made of the energy requirements of (a) analogue and (b) digital television systems.

Photo of Margaret Hodge Margaret Hodge Minister of State (Industry and the Regions)

The Government's Market Transformation Programme (MTP) has analysed the performances of over 630 televisions sold in 2004, 2005 and 2006 and has concluded that the difference in energy consumption between analogue and integrated digital televisions (IDTVs) is negligible.

The annual consumption of a television varies significantly with screen size and television type, and defining what constitutes a 'typical' television is difficult. However, for a 32 inch widescreen cathode-ray television, MTP estimates that the annual consumption will be 292 kWh, and 310 kWh for a LCD screen of the same size. A 42 inch (a typical size for this technology) plasma TV will consume 746 kWh per year.

However, digital transmission is more efficient than analogue in terms of power usage. Replacing the analogue terrestrial transmission network with a nationwide digital terrestrial television network will lead to a significant net reduction in energy usage by transmission networks, estimated to be 186 GWh per year.

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Annotations

ross warren
Posted on 1 Mar 2007 12:21 pm (Report this annotation)

Does this figure take into account the other digital television providers like Sky and ntl/virgin. Most of the country is already served by these companies and their infrastructure and its energy demands are likely to substantial. Whilst most people would agree that the broadcast of digital signals is more efficient, we are now into an era were there will be substantial duplication of these signals as the various players all attempt to give a full service to their customers. This duplication may well result in the energy demand exceeding the figure given by the minister many times over.

ross warren
Posted on 1 Mar 2007 3:08 pm (Report this annotation)

Thanks Paul very revealing.