60
G
L
O
S
S
A
R
Y
Glossary
Coal
Coal includes all coal, both primary (including hard coal and lignite)
and derived fuels (including patent fuel, coke oven coke, gas coke,
BKB, coke oven gas and blast furnace gas). Peat is also included
in this category.
Crude Oil
Crude Oil comprises crude oil, natural gas liquids, refinery feedstocks
and additives as well as other hydrocarbons.
Petroleum products comprise refinery gas, ethane, LPG, aviation
gasoline, motor gasoline, jet fuels, kerosene, gas/diesel oil, heavy
fuel oil, naphtha, white spirit, lubricants, bitumen, paraffin waxes,
petroleum coke and other petroleum products.
Gas
Gas includes natural gas (excluding natural gas liquids) and gas
works gas. The latter appears as a positive figure in the "gas works"
row but is not part of indigenous production.
Nuclear
Nuclear shows the primary heat equivalent of the electricity
produced by a nuclear power plant with an average thermal
efficiency of 33 per cent.
Hydro
Hydro shows the energy content of the electricity produced in
hydro power plants. Hydro output excludes output from pumped
storage plants.
Combustible Renewables & Waste comprises biomass and animal
products (wood, vegetal waste, ethanol, animal materials/ wastes
and sulphite lyes), municipal waste (wastes produced by the
residential, commercial and public service sectors that are collected
by local authorities for disposal in a central location for the
production of heat and/or power) and industrial waste.
Other
Other includes geothermal, solar, wind, tide, wave energy,
electricity and heat. Unless the actual efficiency of the geothermal
process is known, the quantity of geothermal energy entering
electricity generation is inferred from the electricity production at
geothermal plants assuming an average thermal efficiency of 10
per cent. For solar, wind, tide and wave energy, the quantities
entering electricity generation are equal to the electrical energy
generated. Direct use of geothermal and solar heat is also
included here. Electricity is accounted fo