As new settlement areas emerge, it is crucial to design the necessary electricity infrastructure effectively. These areas are divided into grids, each defined as a rectangle or square of uniform dimensions. This study focuses on optimizing the placement and assignment of low voltage distribution transformers (DTRs) based on forecasted electricity consumption for each grid. Key constraints include ensuring that forecasted loads are allocated to one or more DTRs, that DTR capacities are not exceeded, that assignments remain within a limited range of grids, and that all loads within a grid are fully assigned. We develop a mathematical programming model aimed at identifying the cost-minimizing solution for DTR placement and load assignment.