• National Thermal Power Corporation Ltd. (NTPC)
  • Public Works Department (PWD)- Delhi
  • National Aluminium Company Limited (NALCO)
  • National Hydroelectric Power Corporation (NHPC) Ltd.
  • National Highways Authority of India (NHAI)
  • Bharat Heavy Electricals Limited (BHEL)
  • National Building Construction Corporation Ltd. (NBCC)
  • Jammu & Kashmir Power Development Corporation Ltd. (JKSPDC)
  • Punjab Energy Development Agencies (PEDA)
  • Punjab State Power Corporation Ltd. (PSPCL)
  • Himachal Pradesh State Electricity Board (HPSEB)
  • Sardar Sarovar Narmada Nigam Limited (SSNL)
  • Kerala State Electricity Board (KSEB)
  • Lucknow Development Authority (LDA)
  • Public Works Department (PWD)- Uttrakhand
  • Public Works Development (PWD)- Meghalaya
  • Rail Vikas Nigam Limited (RVNL)
  • The Braithwaite Burn & Jessop Construction company Ltd. (BBJ)
  • Sabarmati River Front Development Corporation Ltd (SRFDCL)
  • Jammu & Kashmir Energy Development Agency (J&KEDA)
  • Ircon International Ltd.
  • Bridges & Roofs Construction Services (B&R)
  • Hindustan Petroleum Corporation Ltd. (HP)
  • IRCON – SPSCPL U.J.V
  • Larsen & Toubro Construction (L&T)
  • AFCONS Infrastructure Ltd
  • Tata Power
  • Hindustan Construction Company (HCC)
  • Shapoorji Pallonji & Co. Ltd. (SPCL)
  • Gammon India Ltd. / Gammon Engineers & Contractors Pvt. Ltd.
  • GMR Group
  • GVK Power & Infrastructure Ltd.
  • LNJ Bhilwara Group
  • ITDCem India Ltd.
  • JMC Projects Ltd.
  • JFE Engineering Corporation
  • Trident Construction
  • Bhoruka Power Corporation Ltd.
  • D.S Construction (DSC) Ltd.
  • Navayuga Engineering Company Ltd.
  • Texmaco Ltd.
  • Leitner, Italy
  • Simplex Infrastructure Ltd
  • Continental Engineering Corporation
  • C&C Constructions Ltd.
  • Trina Solar Ltd.
  • Triveni Structurals Ltd.
  • Era Constructions (India) Ltd.