Statistical Terms Primary energy consumption
- Traditionally, in bp’s Statistical Review of World Energy, the primary energy of non-fossil based electricity (nuclear, hydro, wind, solar, geothermal, biomass in power and other renewables sources) has been calculated on an ‘input-equivalent’ basis. Primary energy consumption is reported in net terms. The gross calorific value to net calorific value adjustment is fuel-specific.
Fuels used as inputs for conversion technologies (gas-to-liquids, coal-to-liquids and coal-to-gas) are counted as production for the source fuel and the outputs are counted as consumption for the converted fuel.
- bp Statistical Review of World Energy 2020
- Temporal Coverage
- To better assess primary energy trends, BP has decided to move to a time-dependent thermal equivalence model. The conversion factor used each year to calculate the ‘input-equivalent’ consumption for a given level of generation is based on a simplified representation of measured average efficiency levels:
1965-2000: assumed constant efficiency of 36%
2000-2017: a linear increase from 36% to 40% based on observed data
2018 onwards: the annual rate of efficiency improvement is based on the simplified assumption that efficiency will increase linearly to 45% by 2050.