From The Collaborative International Dictionary of English v.0.48 :
energising \energising\ adj.
Same as energizing. [mostly British]
Syn: energizing, kinetic.
[WordNet 1.5]
From WordNet (r) 3.0 (2006) :
energising
adj 1: supplying motive force; "the complex civilization of
which Rome was the kinetic center"- H.O.Taylor [syn:
energizing, energising, kinetic]