Found in the following dictionaries
SOWPODS (Collins Scrabble Words)
"Energic" Definition
adjective
In a state of action; acting; operating.
Source: Wiktionary
Having energy or great power; energetic.
Source: Wiktionary
Energetic; endowed with or manifesting energy.
Source: Century Dictionary
In physics, exhibiting energy or force; producing direct physical effect; acting; operating: as, heat is an energic agent.
Source: Century Dictionary