Telecom

• Bharat Sanchar Nigam Limited (Department of Telecommunications), Government of India
  
• Mahanagar Telephone Nigam Limited
  
• Indian Railways
  
• Departments of Defence
  
• Telecommunications Consultants of India Ltd.
  
• State Nodal Agencies of the Ministry of Non-Conventional Energy Sources
  
• Private sector companies

ENERGY
Ethanol:

• Indian Oil Corporation Ltd
  
• BPCHL, HPCL, IBP and Reliance

• Isolux, Spain
• Epifanio, Spain
• Digrun Solar, Spain
• LT Trade International, Italy
• Mandik Corporation, Czech Republic