Day, Rob

Black Coral Company
Highlights and Trends from Global Cleantech 100 List
Rob Day is a Partner with Black Coral Capital, based in Boston. He has been a cleantech private equity investor since 2004, and acts or has served as a Director, Observer and advisory board member to multiple companies in the energy tech and related sectors, currently including Noesis (, Digital Lumens (, Next Step Living (, Powerit Solutions (, and Zeta Communities ( Rob is the Chair of the upcoming conference "NextWave Greentech Investing", by Greentech Media. He serves as the Co-Chairman of the Cleantech Open – Northeast Region (, and was previously a co-founder of the Renewable Energy Business Network, a non-profit organization which was acquired in 2009 by the Clean Economy Network (now part of the Advanced Energy Economy Since 2005 he has also authored the website Cleantech Investing (, which currently appears on Formerly a consultant with Bain & Company, Rob has worked with companies and evaluated private equity transactions in the energy/ utilities, telecom, IT, medical/pharmaceutical, and retail industries. Earlier in his career, Rob was a member of the World Resources Institute's Sustainable Enterprise Program, where he co-authored the report The Next Bottom Line: Making Sustainable Development Tangible. Rob received his MBA at the Kellogg Graduate School of Management (Northwestern University), and his BA at Swarthmore College.