I am currently using the tag line "Energy Efficiency Made Easy" but our logo does not necessarily need this to be included.
Green companies do run the risk of having clichéd logos. I know there is a fine line between giving a 'green cue' in a logo and being too obvious. A design that strikes this balance (giving an energy efficiency cue, without being too obvious) should do well.
Hemos encontrado algunos concursos similares que podrían interesarte