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www.stem.com Stem provides Intelligent Energy Storage Systems that reduce power costs, increase operational efficiencies, maximize renewable generation value and reduce greenhouse gas emissions. Headquarters: San Francisco, CA Year Invested: 2011 Status: Active: (NYSE: STEM)

www.zincfive.com ZincFive is a developer and manufacturer of rechargeable nickel-zinc batteries and battery solutions that are safe, recyclable and energy efficient for mission critical applications. Headquarters: Tualatin, OR Year Invested: 2006 Status: Active