File:Heineken Green Energy logo.jpg

Summary
Official logo from here

Fair use in Heineken Green Energy

 * 1) No other free replacement available whatsoever, or certainly not with great ease.
 * 2) Useful as a visual representation of the festival.
 * 3) Low resolution logo with Heineken attached displaying sponsors
 * 4) It does not limit the copyright owner's rights in any way.