This paper introduces a high-performance, single-stage inverter design tailored for grid-connected photovoltaic (PV) systems. The proposed configuration not only amplifies the typically low voltage of PV arrays but also efficiently converts solar-generated DC power into high-quality AC power for grid integration, while maximizing power extraction from the PV array. The system ensures that the total harmonic distortion of the grid-fed current remains within acceptable limits. Key advantages of the proposed topology include enhanced PV array utilization, improved efficiency, reduced cost, and a compact design. Furthermore, the inherent design ensures that the PV array operates as a floating source relative to the grid, significantly improving system safety. This study also provides a comprehensive review of existing single-stage topologies for grid-connected PV systems, offering a detailed comparison with the proposed design. A thorough steadystate analysis is included, along with a step-by-step design methodology and formulas for calculating peak device stresses. Additionally, the required condition for the modulation index in sinusoidal pulse-width modulation control under discontinuous conduction mode is derived. Analytical, simulation, and experimental results are provided to validate the performance of the proposed system.