  Using the elements of the so-called $KBc\gamma$ subalgebra, we study a class
of analytic solutions depending on a single function $F(K)$ in the modified
cubic superstring field theory. We compute the energy associated to these
solutions and show that the result can be expressed in terms of a contour
integral. For a particular choice of the function $F(K)$, we show that the
energy is given by integer multiples of a single D-brane tension.
