(n) energy (ger: Energie)
(P)
(n) energy source
(n) energy band
(n) energetics
(n) nuclear energy
(n) energy conservation
economical use of energy
(P)
(n) thermal energy
heat energy
(n) energy revolution
(n) (obsc) energy metabolism
(n) energy efficiency
(n) energy industry
(n) energy resources
(n) energy level
(n) energy metabolism
(n) energy problems
(n) potential energy
(n) primary energy
(n) kinetic energy
(n) chemical energy
(n) binding energy
(n) atomic energy
(n) natural energy (usu. renewable energy)
(n) rest energy
(n) solar energy
solar power
(n) alternative (substitute) energy
(n) geothermal energy
geothermal power
(n) internal energy (physics)
(n) wind power energy
(n) radiant energy
(n) (obsc) radiant energy