Rear Admiral Leendert “Len” Hering Sr. (U.S. Navy, retired), is a prominent military and civilian sustainability leader with a broad background in energy and environmental issues. His passion in sustainability is educating people on the dangers the future holds without taking responsible actions to secure the nation’s energy independence and to preserve water, air quality and other resources.

Today he is the Executive Director of the Center for Sustainable Energy, a 501(c)3, headquartered in San Diego, California, whose mission is to accelerate the transition to a sustainable world powered by clean energy.