 lujai hep lujai hep gayathri mon 6192023 1715 the project is proposed to be located on left bank of lujai nallah a tributary of river chenab in district chamba himachal pradesh the project involves construction of trench weir across lujai nallah and a surface power house located on left bank of lujai nallah upstream of the confluence with chenab river capacity 45 mw design energy in 90 dependable year 15487 mu gross head 809 m diversion structure trench weir 15 m l x2m w head race tunnel 595 km long 32 w x36 h m dshape shortconcrete lined penstock pressure shaft one no surface 1350 m long 17m dia power house surface type to house three no pelton turbine with generation units of 15 mw each district chamba state himachal pradesh projects under prefeasibility stage 927 mw  chenab lujai nallah chamba hp 45 mw  