This paper discusses the analysis of reflectarray cells comprising MEMS control elements. The method employed allows a very fast and accurate analysis of the reflectarray cell performance, quasi independently of the number of embedded MEMS and reconfigurable states. It also allows computing useful design parameters such as the power dissipated in each MEMS within the cell. Based on this method, we present the analysis of a monolayer cell embedding a multitude of MEMS control elements, demonstrating for e.g. the intimate link between phase dispersion and loss in such reconfigurable reflecting cells.