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Energy Performance of Products

Set-top boxes (STBs)

The energy consumed by Pace products in use (and the consequent CO2 emissions this generates) is one of Pace’s most significant environmental impacts.

The current trend for more powerful boxes (to support ultra high definition (UHD), PVR functionality, etc.) has continued in 2014, placing greater demands upon our STBs for higher data transmission and reception rates than previously. The need for increased functionality requires more complex software and, as a consequence, also impacts upon its energy consumption.


Energy and C02 performance of STB products in 2014

Information201220132014Movement
Total energy consumed by units sold (MWh) 1,659,490 1,792,660 1,732,522 Arrow - Down
Total annual CO2 from energy consumed by units sold (tCO2)* 937,610 980,865 923,808 Arrow - Down
Average annual energy consumption per set-top box (kWh/year) 92.0 89.5 88.57  Arrow - Down
Average annual CO2 emissions per set-top box (kg CO2)* 51.99 47.99 47.47  Arrow - Down

* In the table above, an emission factor of 0.565 (kg CO2 per kWh) was used for the 2012 reporting period. This was the most recently published conversion factor for report publication (i.e. 2010) as cited by the International Energy Agency (source: CO2 Emissions from Fuel Combustion – International Energy Agency Data Services 2012). For 2013 and 2014 periods, the most recently published worldwide conversion factor of 0.536 kgCO2 per kWh was used (source: CO2 Emissions from Fuel Combustion – International Energy Agency Data Services 2013). Whilst the 2014 edition of this IEA document (CO2 Emissions from Fuel Combustion – International Energy Agency Data Services 2014) was available at the time of reporting, no published worldwide emission factor is contained therein.


Across Pace’s new STB product designs introduced to the market in 2014, the average annual energy consumption per STB reduced by 1% to 88.57 kWh/STB/yr (2013: 89.50 kWh/STB/yr) with a corresponding reduction in associated CO2 emissions of 1% to 47.47 kg CO2/STB/yr (2013: 47.99 kg CO2/STB/yr).

When account is taken of the volumes of units shipped to market in 2014, both the total energy consumed and associated CO2 emissions have also shown a decrease overall. In 2014 we can report a 3.9% reduction in product energy consumption and corresponding CO2 emissions overall. Again, this demonstrates that, against a trend of ever growing functionality across our STB products, our DfE initiatives continue to play a key part in keeping energy consumption and CO2 emissions as low as is reasonably practicable.

This contrasts sharply with last year’s figures, where we reported a 7% increase in energy consumption and CO2 emissions overall, despite a fall of 2.6% in the total number of STB units placed onto the market in that period.

Energy consumption is calculated using user usage patterns defined in either the EU Code of Conduct on Energy Efficiency of Digital TV Service Systems (Code of Conduct) or Energy Star requirements, depending on the intended market for the product.

CO2 emissions are calculated using the worldwide conversion factor published by the International Energy Agency (IEA) 2013.

By continually improving the design of our set-top box, we aim to seek ways of reducing further the energy consumption and associated CO2 emissions from our products.


Home gateways

As our business and our product ranges adapt to meet the constantly changing demands of our customers, we strive to ensure that our principles and systems of Design for Environment (DfE) are rolled out across our emerging product ranges. This year, we have made a solid start to the process of rolling our DfE to our home gateways. Using a sample of over 85% (2,315,329) of our current home gateway products supplied to the market in 2014, we are able to report the following energy and GHG baseline in the table below.


Energy and C02 performance of Home Gateway products in 2014

Information2014
Total energy consumed by units sold (MWh) 7,751
Total annual CO2 from energy consumed by units sold (tCO2) 4,150
Average annual energy consumption per gateway product (kWh/year) 4.3 
Average annual CO2 emissions per set-top box (kg CO2) 2.28