Hi there, Few of my entries as #281, #282, #283, #284, #286, #287 & #288 with different logo design & layouts...In #281 I designed green hills with wind power energy as that is just according to your tagline too "Harvesting Clean Energy" thats why I put green hills there....In #284 & 287 I designed a lightening to represent energy...Fonts are unique, professional & popular too..That design will work good for both white & black backgrounds as well...A clean & a professional corporate looking logo which can easily be use for printing, web etc..Hope you like my designs..Kindly let me know if you need any changes.