** Energy solutions provider's shares ERII.O down 11.5% at
$9.5 in after-hours trade
** Stock set for its worst day in nearly three years on
Friday, if losses hold
** Co plans mixed shelf offering of up to $250 mln urn:newsml:reuters.com:*:nACSTssx7a
** Energy Recovery will not receive any proceeds from the
sale of common stock by the selling stockholders
** Up to Thursday's close, stock up 57% this year
(Reporting by Bharath Manjesh in Bengaluru)
((Bharath.ManjeshR@thomsonreuters.com; outside U.S. +91 80
6749 8400;))