** Shares of U.S. LNG company New Fortress Energy NFE.O down ~20% at $1.1 premarket

** Company posts Q3 net loss of $293.4 million compared to a profit of $11.3 million a year earlier

** Q3 interest expenses triples to $210.6 million from $71.1 million a year earlier

** NFE says in filing that its accounts were prepared on a "going concern" basis, but management warned there was "substantial doubt" the company can continue operating without new financing or a broader restructuring

** Up to last close, shares down 90.3% YTD

(Reporting by Varun Sahay)

((Varun.sahay@thomsonreuters.com))