Renewables 2016 Global Status Report

Renewables 2016
Global Status Report

Energy Units and Coversion Factors

Metric prefixes

kilo

(k)

=

103

mega

(M)

=

106

giga

(G)

=

109

tera

(T)

=

1012

peta

(P)

=

1015

exa

(E)

=

1018

Volume

1 m3

=

103

1 US gallon

=

106

1 Imperial gallon

=

109

 

Example:
1 TJ = 1,000 GJ = 1,000,000 MJ = 1,000,000,000 kJ = 1,000,000,000,000 J = 1012 J
1 J = 0.001 MJ = 0.000001 GJ = 0.000000001 TJ

Energy unit conversion

Multiply by:

GJ

Toe

MBtu

MWh

GJ

1

0.024

0.948

0.278

Toe

41.868

1

39.683

11.630

MBtu

1.055

0.025

1

0.293

MWh

3.600

0.086

3.412

1

Toe = tonnes oil equivalent

1 Mtoe = 41.9 PJ

Example: 1 MWh x 3.600 = 3.6 GJ

Heat of combustion (high heat values)

1 l ethanol = 84,530 Btu / US gallon = 21.2 MJ / l
1 l biodiesel = 127,960 Btu / US gallon = 32.1 MJ / l

SOLAR THERMAL HEAT SYSTEMS

million m² = 0.7 GWth

Used where solar thermal heat data have been converted from square metres (m²) into gigawatts thermal (GWth), by accepted convention.

Example:

1) These values can vary with fuel and temperature.
2) Around 1.5 litres of ethanol is required to equate to 1 litre of gasoline.
3) Heat values from U.S. Department of Energy Alternative Fuels Data Center.