Carbon Dioxide Emissions by Property Type

Figure 6 shows total CO₂ emissions by property type. Offices contributed 49% of this total and shopping centres contributed 46% in 2005/2006.

Figure 7 shows average CO₂ emissions per m² by property type. This information is used in our ongoing energy benchmarking programme which requires an understanding of how intensively energy is consumed per m² for each property type. This helps prioritise energy reduction initiatives.

There was a reduction in office CO₂ emissions compared with 2004/5. This was largely due to a reduction in consumption from reporting properties related to the energy management activities at our Broadgate properties.

There was a slight increase in shopping centre CO₂ emissions for electricity. This was largely due to data from two additional properties reporting this year and a significant increase in electricity reported from one shopping centre compared with last year. This is attributable to the property being purchased during the 2004/5 reporting period.

There was also a significant increase in CO₂ emissions associated with electricity for ‘other’ properties. This is due to the inclusion of one retail property which reported high electricity consumption for the common area. The accuracy of this property’s data will be reviewed during 2007.

In terms of gas related CO₂ emissions, offices and shopping centres continue to be the primary contributors. Total CO₂ emissions associated with gas use in offices declined, largely due to properties reporting a decrease in use and fewer reporting properties this year. Total CO₂ emissions associated with gas use in shopping centres increased slightly due to more centres reporting gas use. However, there was a reduction in CO₂ emissions associated with gas use in shopping centres per m². This is largely due to newly reporting properties reporting a low consumption relative to common floor area.

*Others for electricity 2005/6 in order of highest value first: Retail Warehouse, Leisure, Residential, Supermarket, Distribution and Industrial, Retail.
*Others for electricity 2004/5 and 2003/4 in order of highest value first: Retail Warehouse, Residential, Leisure, Supermarket, Distribution and Industrial, Retail.
*Others for gas 2005/6 and 2004/5: Retail Warehouse.
Total CO₂ emissions (tonnes) per property type are calculated by converting reported energy use per property type into kilograms of CO₂ using DEFRA conversion factors.

CO₂ emissions per m² per property type are calculated by dividing total CO₂ emissions by the total common floor area values for each property type for which reliable common floor area data were available. This provides a broad overview of the dataset.

The CO₂ emissions per m² for ‘Others’ have not been included as year on year comparisons are not meaningful due to changes in the property types that are included in the ‘Others‘ category.