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Devolved administration greenhouse gas inventories

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  • Release date: 7 June 2013
  • Period covered: 1990-2011
An annual report, produced by the National Atmospheric Emissions Inventory, includes emisson estimates for greenhouse gases.

The report presents estimates of greenhouse gas emissions for the constituent countries of the UK on both ‘by-source’ and ‘end-user’ basis. Separate greenhouse gas emission inventories have been estimated for England, Scotland, Wales and Northern Ireland for the years 1990, 1995 and 1998 to 2011.

The information published in this report will be used to assess the Welsh Government’s performance on its commitment to reduce emissions in Wales by 3 per cent per year in areas of devolved competence, against the baseline of 2006-2010 emissions.

The full report is available via the NAEI and UK Air websites.

Key points

  • Overall, since the base year (1990/1995), emissions of the basket of greenhouse gases have generally fallen.  In 2011 it was estimated that emissions totalled 43.8 million tonnes of carbon dioxide (CO2) equivalent, a fall of 21 per cent compared to base year emissions.
  • There was a 5 per cent decrease of greenhouse gas emissions in 2011 compared with 2010. This was largely due to a decrease in the residential sector which may have been affected by the cold winters at the start and end of 2010.
  • The main source of emissions continues to be the energy sector which produces around 36 per cent of all greenhouse gas emissions. In comparison, business is the second biggest source, accounting for 21 per cent of emissions in 2011.
  • Wales has a higher proportion of traded emissions covered by the EU Emissions trading Scheme than the rest of the UK, referred to as the ‘traded’ sector. This reflects the high share of heavy industry and electricity generation in Wales (e.g. emissions from power stations, refineries and integrated iron and steelworks). As a result, 48.5 per cent of the total CO2 emissions in Wales were produced by the ‘non-traded’ sector in 2011.
  • When considering emissions from end users as opposed to energy producers, for example emissions from power stations are re-allocated to users of electricity, it is estimated that, with exclusion of emissions associated with energy exports, Wales has seen a fall of over 30 per cent since the base year.
  • Wales has a lesser share of UKs end user emissions compared to the by source estimates, and has achieved higher emission reductions since the base year than the by source inventories indicate.

Please note these figures are not classed as National Statistics.


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