This calculator determines the maximum number of solar panels that can fit in a given area, accounting for panel dimensions, row spacing, and area constraints. The calculation includes spacing between rows for maintenance access, shading considerations, and proper installation clearances. Results show total system capacity in kilowatts (kW) and area utilization percentage. For optimal system design, consider additional factors such as roof obstructions, fire setbacks, and equipment placement. Row spacing is critical for ground-mount systems to minimize shading and allow maintenance access.