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World Energy Outlook 2007

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Observed Decline Rate<br />

The production decline rate of an oil or gas field after all measures have been<br />

taken to maximise production. It is the aggregation of all the production<br />

increases and declines of new and mature oil or gas fields in a particular region.<br />

Other <strong>Energy</strong> Sector<br />

Other energy sector covers the use of energy by transformation industries and<br />

the energy losses in converting primary energy into a form that can be used in<br />

the final consuming sectors. It includes losses by gas works, petroleum<br />

refineries, coal and gas transformation and liquefaction. It also includes energy<br />

used in coal mines, in oil and gas extraction and in electricity and heat<br />

production. Transfers and statistical differences are also included in this<br />

category.<br />

Residential, Services and Agriculture<br />

This sector also includes energy use in the forestry and fishing sectors. It also<br />

theoretically includes military fuel use for all mobile and stationary<br />

consumption (e.g. ships, aircraft, road and energy used in living quarters)<br />

regardless of whether the fuel delivered is for the military of that country or for<br />

the military of another country. In practice, many countries find this difficult<br />

to report.<br />

Power Generation<br />

Power generation refers to fuel use in electricity plants, heat plants and<br />

combined heat and power (CHP) plants. Both main activity producer plants<br />

and small plants that produce fuel for their own use (autoproducers) are<br />

included.<br />

Total Final Consumption<br />

Total final consumption (TFC) is the sum of consumption by the different<br />

end-use sectors. TFC is broken down into energy demand in the following<br />

sectors: industry (including manufacturing and mining), transport, other<br />

(including residential, commercial and public services, agriculture/forestry and<br />

fishing), non-energy use (including petrochemical feedstocks), and nonspecified.<br />

Total Primary <strong>Energy</strong> Demand<br />

Total primary energy demand represents domestic demand only, including<br />

power generation, other energy sector, and total final consumption. It excludes<br />

638<br />

<strong>World</strong> <strong>Energy</strong> <strong>Outlook</strong> <strong>2007</strong>- ANNEXES

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