• Harayana Power Generation Corporation Ltd.
  
  
• Andhra Pradesh Power Generation Corporation Ltd.
  
  
• Vedanta Aluminium Ltd.
  
  
• Sterlite Energy Ltd.
  
  
• Uttar Pradesh Rajya Vidyut Unnayan Nigam Ltd.
  
  
• Damodar Valley Corporation
  
  
• West Bengal Power Development Corporation Ltd.
  
  
• R P Sanjiv Goenka Group
  
  
• GMR Energy
  
  
• Tata Power