Brook Porter joined Kleiner Perkins Caufield & Byers in 2010 as a partner on the greentech team. His focus is on innovative low-carbon solutions to transportation, chemicals and power generation, as well as on energy storage. Before joining KPCB, Brook had worked in renewable energy for more than a decade, during which time he co-founded multiple companies. His most recent role was as chief operating officer of Primafuel, a biofuel technology company recognized by the World Economic Forum in 2008 as a technology pioneer. Earlier in his career, Brook co-founded a hydrogen fuel cell technology company acquired by Intelligent Energy, a UK-based company known for its compact Proton Exchange Membrane fuel cells. Brook is named on multiple U.S. and international patents in the field of renewable energy. He holds a bachelor of science degree in chemical engineering from the University of California, Berkeley, with an emphasis in environmental technology.