On the basis of the grain interaction model for deformation texture simulation (GIA) a scheme is suggested to derive the stored deformation energy in deformed grains. With a statistical analytical model for the texture evolution during primary static recrystallization the influence of these energy values is analyzed. Further, two methods to simulate nuclei spectra in deformation inhomogeneities - stable orientations (e.g. Cube bands) and transition bands - are proposed. For this a new in-grain orientation gradient model as extension of GIA is presented. The simulated nuclei spectra and their dependency on the deformation temperature are discussed. By example of hot rolling of Aluminum alloy AA5182 it is demonstrated how the nuclei spectra are processed in the RX-texture model. Here special focus is on the role of micro growth selection. The proposed methods are of general nature and ought to be applicable to different materials and deformation conditions.