• Orissa State Electricity Board
  • Bihar State Electricity Board
  • Maharashtra State Electricity Board
  • Punjab State Electricity Board
  • Govt. of Manipur, Electricity Department
  • M.P.Electricity Board, Jabalpur
  • Rajasthan State Electricity Board
  • West Bengal State Electricity Board
  • Department of Atomic Energy
  • Bhaba Atomic Research Centre
  • Central Coalfields Ltd
  • Mahanadi Coalfields Ltd
  • Larsen & Toubro Ltd
  • North Eastern Electric Power Corporation Ltd., Shillong
  • Kirloskar Electricals Ltd
  • Siemens Ltd
  • Crompton Greaves Ltd
  • Steel Authority of India Ltd
  • Indian Metal & Ferro Alloys Ltd
  • Tata Projects Ltd
  • Tata Iron and Steel Company Ltd
  • National Aluminium Company Ltd
  • Vendanta Aluminium Limited
  • Nilachal Ispat Nigam Limited
  • Various Govt. Undertakings & Corporations