This is a cool concept. So you know our legal name shows "Energy" so we would have to stick with that. Since we also drill for oil and gas, using a gradation to indicate earthy concept is good.
What I like about your design is that you are clearly showing topography. One of the important points for our audience is to communicate that we use only "Valid" sources of energy -- less risk. Thus we have been leaning in the check mark direction, but we are not firm on that right now.
We remain open to fresh concepts. Your use of the wave as layers is excellent. Some alternate "earthy" looks and little adjustment to the font would be very interesting to see!
This is a fierce competition and we are having a blast. We really appreciate your efforts!