Because of this graph we needed series on domestic primary energy consumption ... it was quick to make a dataset out of it !
- US EIA Historical Statistics for 1981-2010
U.S. Energy Information Administration, International Energy Statistics, Go to EIA database, data accessed 20 December 2012.
This graph represents domestic consumption of primary energy. All units represent energy contents. No “physical units” such as mass or volumes are considered.
All data is loaded in Energy unit Mtoe (Million tons of oil equivalent)
The unit conversion factors applied are following:
How to read this graph : 1 Mtoe = 1,4286 Mtce
Energy quantities regarding fossil fuels (oil, gas and coal) represent higher heating value (gross calorific content) and are given by the EIA using country specific calorific content of fuels.
Nuclear energy represents the heat produced by fission and radioactive decay in the fuel. (primary "vapor" heat equivalent is calculated from raw nuclear electricity IEA conversion : raw electricity/primary vapor heat equivalent = 33%)
On the contrary, energy quantities under hydro, geothermal, wind, “solar, tide and wave” and “biomass and waste” energy correspond to raw electricity production.
The biodiesel and ethanol energy contents are calculated from volumes given in EIA data and represent lower heating values (net calorific content), the following density and calorific content are then applied:
The overall primary energy (when all the energies are displayed) is the sum of each primary energy data calculated through the related TSP assumptions mentioned above. Thus, the overall primary energy consumption data presented in the graphs are slightly different from what is presented in EIA database under the labels "Total Primary Energy Consumption".