Derek focuses on strategic development for Greenstone. Prior to Greenstone, Mr. Fromm, in 1999, founded Greenstone Capital, an independent financial and mergers & acquisitions advisory firm focused on regulated industries, including investor-owned utilities. Until 1998, Mr. Fromm  was executive director at UBS in London, and practiced corporate and equipment finance law in New York.  Mr. Fromm has been a member of the New York bar since 1983, and holds a Series 7 securities license. He has a law degree from University of Pennsylvania and the University of Leyden law schools, and a Masters of Business Administration of INSEAD, in France. 


Derek Fromm - Co-owner and CFO

Keith has spent over 30 years in the renewable energy industry as an educator, contractor, developer and financier with project experience utilizing large scale co-generation, solar thermal, solar electric and hydrogen fuel cell technologies. His experience in developing financing for power purchase agreements as well as conventional and tax oriented leases has created opportunities for governmental, military, educational and commercial clients to implement cost-effective renewable energy  solutions. Past clients include US Department of Energy, California Department of Transportation, Coca Cola Bottling, Foster’s Wine Estates and several universities and schools.

Keith Rutledge - Co-owner and COO


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