### Energy use & supply

#### Views

Secondary energy Primary energy | Electricity generation Trend (KAYA)

The above indicators visualize a distinction between primary and secondary (final) energy use. In addition, information is given on electricity generation and a set of trend ('Kaya factors') indicators.

Secondary energy use is defined as the amount of energy consumed by the end-user and does not include the energy lost in the production and delivery of energy products. Neither does it include the use of feedstocks and non-energy use. Our definition of secondary energy use is almost equal to 'Total Final Consumption' as defined by the International Energy Agency, except for the fact that the latter term does include feedstocks and non-energy use.

Primary energy use, in contrast, is the sum of all energy consumed, including losses at various stages of energy upgrading and processing. Primary energy here includes non-energy use and feedstocks. The terms 'use', 'demand', 'consumption' and 'supply' are often used for the same energy flow in energy statistics and modelling, as it is assumed that demand is fully met. This is also the case in the TIMER model scenarios. Our definition of primary energy use is equal to the term 'Total Primary Energy Supply' as defined by the International Energy Agency.