(Updates with report on government's market coupling plan)
* Indian Energy Exchange Ltd IIAN.NS down as much as 13%
to 209.05 rupees
* ET Now reports that India government plans to implement
market coupling in power exchanges, citing sources
* Market coupling is an economic model used in energy
markets to create a single, uniform price for electricity across
different trading platforms or exchanges
* Report says market coupling is anticipated to hit the
market dominance of IIAN
* 2 mln shares traded in 6 block deals, at a discount
between 3.4% to 6.9% to Monday's close, LSEG data shows
* Overall 101 mln shares traded, 6.7X 30-day avg
* Co top pct loser in NIFTY 500 index .NIFTY500
* IIAN up ~32% YTD vs ~25% gains in NIFTY500
(Reporting by Vijay Malkar)
((VijayDattaram.Malkar@thomsonreuters.com;))