Dictionary of Energy

Common Abbreviations in Energy Usage

A

ampere

angstrom

A-h

ampere-hour

amu

atomic mass unit

API

American Petroleum Institute

atm

(standard) atmosphere

AU

astronomical unit

bbl

barrel (42 U.S. gallons)

bq

bequerel

Btu (BTU)

British thermal unit

C

Celsius (centigrade)

C

coulomb

cal

calorie

cd

candela

CDD

cooling degree-day

Ci

curie

cm

centimeter

CFS

cubic feet per second

d

day

EMU

electromagnetic unit

ESU

electrostatic unit

eV

electron volt

F

Fahrenheit

F

farad

ft

foot (feet)

ft 2

square foot

ft 3

cubic foot

g

gram

gal

gallon

gr

grain

Gy

gray

h

hour

H

henry

ha

hectare

HDD

heating degree-day

hp

horsepower

Hz

hertz

in

inch

J

joule

k

kilo (thousand)

K

Kelvin

kcal

kilocalorie

kg

kilogram

kJ

kilojoule

km

kilometer

kPa

kilopascal

ktoe

thousand tons of oil equivalent

kVa

kilovolt-ampere

kW

kilowatt

kWh

kilowatt-hour

kWp

kilowatt peak

L

liter

lb

pound

lx

lux

lm

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