Dutch queen Beatrix ( 2 nd L ) listens to the explanation during a tour in the new bio - energy waste storage HVC she opened in Alkmaar , Netherlands , 23 April 2008 . In the new energy plant green energy and warmth is produced by burning waste of wood . EPA / KOEN VAN WEEL < 저작권자 ⓒ 2007 연 합 뉴 스 . 무단 전재 - 재 배포 금지 . >