Domestic: 
 

• All-Weather, Inc. (Qualimetrics)
• Baltimore Gas & Electric
• Ben Franklin Technology Partners
  
• Cleantech Group LLC
• Cities and Municipalities (several)
  
• Department Stores  (including a "top 5" U.S. retailer)
  
• Ecos Technologies, Inc.
• Fortune 50 Electronics Company
  
• Hughes Aircraft
• IntegraCare Assisted Living
• Johns Hopkins University
• Maryland Department of Environment
• Medline Industries
  
• Private Equity & VC Firms (several)
• Reedy Industries
• Sara Lee
  
• Safer Systems
• Sensors Inc. 
• Supermarket chains (7 major national and regional chains)
• Timberland
• Unisys
• Westinghouse
  
• Whirlpool

        Underlined company names are recent GreenSpark customers

        International:

• Abengoa (Spain)
• ArcelorMittal/InlandSteel (India/USA)
• Astellas (Japan)
• Austrade (Australia)
  
• Bank (Top 5 UK bank)
  
• Deloitte (Australia)
  
• Bayer (Germany)
• Gemini Consulting (France)
• German Marshall Fund (Germany)
• Grupo Vitro S.A. (Mexico)
• Philips Lighting B.V. (USA, Netherlands, Asia) 
• Polam Wilkasy (Poland) 
• Polish Ministry of Finance
• SAP (Germany)
• Siemens (Germany) 
• Southcorp (Australia)
• Synthes (Switzerland)
  
• Whirlpool Europe (Italy)
• World Bank/IDA (Poland)