Look at the movie Thrive [url removed, login to view]
skip intro video and click that you want to see the actual movie.
and stop at about 0:10:21 seconds and look at the donut shape energy picture there (maybe make it look less donut shaped and more global shape and maybe similar colors but not the same) and the similar one at 0:11:27 with the earth in the middle. If you will come up with something like this, maybe a combination of both on a black background. I would put this on a black silk heavy card stock business card, using foil with gold embossed lettering.
A few weeks ago I also added that if the designer has a better idea that would be very similar taking into consideration energy and global I would look at that. I also wanted the edge of the card to be black then fading into a blue color as it goes to the center.
I will also attach a picture. Maximum bid $65