i really like this concept, but I wish you would try one reversing the arrow colors only because I think the house needs to be green and the arrow pointing up could represent improvement.
I do like the green arrow on the bottom as in #97 but I think the orange sphere in #77 has more class. Could we try that on one and then try that same scheme on a black background only changing "retro" to white letters. Also you can put "ENERGY EFFICIENCY EXPERTS" underneath. Thanks again for all the work.
I really like the colors in #103, but I prefer the lowercase font in #102. also please change the bottom line to say "ENERGY EFFICIENCY EXPERTS" Thanks so much!
It doesn't look like there is any doubt you will win. Could you try 1 last tweak? Add 4 black window panes to the grey arrow, and change the other window panes to white on the green arrow in # 108. Thanks again fabulous work!