Carbon Dioxide Emissions

Emissions from Defence Estate

Emissions each year from the Defence Estate includes total energy consumption, in kWh1, from all fuel types, between 1 April and 31 March for all MOD activities in the world, excluding operational theatres, Trading Fund Agencies (except DSTL) and Non Departmental Public Bodies. Fuel types include electricity (both grid and self generated), natural gas, Liquid Petroleum Gas (LPG), Oil (kerosene, diesel, Furnace Fuel Oil (FFO)), coal and heat (either from Combined Heat and Power (CHP) systems such as Whitehall District Heating Scheme, or third party waste to incineration as in Germany). Carbon conversion and weather correction are conducted by the Building Research Establishment (BRE). Carbon conversion changes KWh to CO2. Weather correction enables a like-for-like comparison of energy consumption from different periods or places with different weather conditions.

Emissions from Fuel for motive use

Data are based on fuel supplied to units rather than fuel burnt.

Data do not include bulk fuel purchased outside the UK, fuel purchased using some types of fuel procurement cards, or fuel purchased using personal payment methods which are later claimed back on expenses. The motive fuel use for 2007/08 onwards was calculated by volume of fuel delivered to the unit during the period. The fuel data include some fuel which may be sold to a third party contractor.

Ground fuel

Currently no data is held centrally on ground fuel purchased outside of the UK for example for movements in Canada, Kenya etc.

   UK supplied ground fuel: The bulk fuel delivered to units by contractors includes that which is subsequently sold to third parties.

   Ground Fuel used overseas: Except for Iraq & Afghanistan no data is held on fuel purchased outside the UK. In Iraq and Afghanistan
   fuel consumption is estimated average monthly fuel consumption, multiplied by 12 to give an estimated average over the whole year.
   Figures are an estimate based on fuel delivered to theatre. Fuel is regularly shared between coalition forces and as such this figure
   is only an estimate.

Marine fuel

Includes fuel obtained through Fuel Exchange Agreement with the United States and fuel supplied from overseas.

Aviation fuel

Includes fuel supplied in the UK; fuel delivered to Cyprus, Falklands and Ascension; fuel delivered to Iraq and Afghanistan; casual pick ups from overseas airfields; and fuel obtained through Fuel Exchange Agreement with the United States.

Aviation fuel in Iraq and Afghanistan are estimates based on fuel delivered to theatre. Fuel is regularly shared between coalition forces and as such this figure is only an estimate. It does not include fuel purchased locally.

Emissions from Business Administration Travel

Road Travel

   White Fleet is made up of the continuous use fleet and hire car fleet which covers the majority of MOD’s road transport (business
   admin) but not all. This data is based upon the vehicle ordered. When a vehicle type is unavailable any upgrade is not recorded.

Continuous use fleet data includes all vehicles up to 7 seats. It excludes minibuses and is based on an average mileage of 18,000 miles per vehicle (based on sampled data) and the average CO2 of vehicles in the fleet. Hire Car fleet data is based on an estimated journey of 250 miles per hire (based on sampled data) and DEFRA Greenhouse Gas Conversion (GHG) conversion factors based on size of vehicle.

   Grey Fleet is the use of personal vehicle for business by civilian staff. It assumes an “average” car using the DEFRA GHG
   conversion factors.

1. KiloWatt hour. A kWh is the amount of power consumed/generated over a period of one hour.