A concentrated solar tower assembly 1000 includes a hollow tower structure 100 defining lower 102 and upper 104 portions. The lower portion 102 includes a closable opening region 106 for configuring a closable opening 106a, and the upper portion 104 includes a top gird 110 having inner and outer top grids 112, 114. The assembly 1000 further includes a solar receiver steam generator 200 entirely installed at the ground level G on the inner top grid 112 simultaneous to erection of the tower 100. The generator 200 on the inner top grid 112 is slidingly directed within the tower 100 from the closable opening 106a to be entirely accommodated therewithin. Thereafter, the generator 200 on the inner top grid 112 is lifted for being placed along the upper portion 104 of the tower 100.
