Cell desirability D is an arbitrary definition of the general attractiveness of a virtual cell. It takes into account three components: the cell's performance (P), user definable as its capacity or energy, the cell's overall stability metric (SM), mentioned above, and the cell's sustainability score (CESI), calculated along the lines of the Chemical Element Sustainability Index (CESI score). Being that this sustainability index is not defined for some chemical elements, it was decided to assign a CESI score to each material based on the transition metals (TMs) it contained. When multiple TMs were present, the average CESI score of the TMs was chosen to represent the material, in order not to penalise apriori the multinary materials. All the descriptors are normalised, so that 0 ≤ D ≤ 3, with D = 3 indicating the most desirable cell possible. The single descriptors are multiplied by "importance factors" (p, c, sm), that are user definable. Choosing, e.g., c = 0 would screen cells ignoring their sustainability score, or doubling sm would double the weight the user attributes to the cells' AMs stability. Lastly, the user can tune the performance metric with its weight p.