

PGCIL
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Power Grid Corporation of India Ltd.
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BHEL
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Bharat Heavy electrical Limited |
NTPC
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National thermal power Corporation |
PSPCL
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PUNJAB STATE POWER CORPORATION LIMTED |
GETCO
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GUJRAT ENERGY TRANSMISSION CORPORATION LIMITED |
PTCUL
|
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POWER TRANSMISSION CORPORATION OF UTTARAKHAND LIMITED |
UPPTCL
|
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UTTAR PRADESH POWER TRANSMISSION CORPN LTD |
RRVPNL
|
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Rajasthan Rajya Vidyut Prasaran Nigam Limited |
MPKVVNL
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MPKVVNL, Bhopal, Jabalpur and Indore region |
JKSPDCL
|
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Jammu & Kashmir State Power Distribution Corporation Ltd. |
CSPDCL
|
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CHHATTISGARH STATE POWER DISTRIBUTION CORPORATION LTD. |
HPSEB
|
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HIMACHAL PRADESH STATE ELECTRICITY BOARD |
MPEB
|
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MADHYA PRADESH ELECTRICITY BOARD |
DHVPNL
|
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DAKSHIN HARYANA VIDYUT PRASARAN NIGAM LTD |
UHVPNL
|
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UTTAR HARYANA VIDYUT PRASARAN NIGAM LTD |
APTRANSCO
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ANDHRA PRADESH TRANSMISSION COMPANY |
MSETCL
|
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MAHARASHTRA STATE ELECTRICITY TRANS.CORPN LTD |
DTL
|
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DELHI TRANSCO LTD |
BIS
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BUREAU OF INDIAN STANDARDS |