The article investigates the electromechanical system of an autonomous photovoltaic station designed for hybrid power supply of pumping equipment and lighting in livestock complexes. The relevance is determined by the need to improve the reliability, energy efficiency, environmental sustainability, and autonomy of power supply to agricultural facilities under unstable operation of centralized power grids, rising energy costs and renewable energy technologies. The system integrates a photovoltaic array, an MPPT controller, a PWM inverter, a three-phase induction motor driving a pumping unit, an energy-storage unit, and an LED lighting subsystem. The selection of the AXM144-9-166-470 photovoltaic panel with a rated power of 470 W and a 7.5 kW induction motor was substantiated. A single-diode photovoltaic-module model was applied, taking into account solar irradiance, temperature, and series and parallel resistances. The research methodology combined mathematical modeling and simulation in MATLAB/Simulink R2023b, experimental assessment of illumination in livestock premises, and a simplified comparative life-cycle greenhouse-gas assessment of photovoltaic and diesel-based power-supply scenarios. The transient processes of the pumping unit were investigated at DC-link voltages of 490 and 390 V. At 490 V, the system ensured stable start-up, and the motor reached the specified speed within approximately 1.1 s. Reducing the input voltage to 390 V decreased the motor voltage, currents, electromagnetic torque, and power consumption; however, the system remained dynamically stable and reached a new steady state without emergency shutdown. The lighting subsystem was evaluated using luxmeter measurements, experimentally determined luminous-intensity curves, and nonlinear regression. A 70 W ZhKU-11U-70-011 sodium luminaire and a 45 W LED luminaire were compared. The LED luminaire reduced installed lighting power by 35%, whereas the sodium luminaire provided a greater effective lighting range because of its light-distribution characteristics. For a functional unit of 66 kWh/day, the simplified assessment indicated approximately 52.47 kg CO₂-eq./day for diesel generation and 3.04 kg CO₂-eq./day for photovoltaic electricity, corresponding to a reduction of about 94.2%. Over 25 years, the estimated greenhouse-gas impact of the photovoltaic scenario was approximately 17 times lower. The results confirm the feasibility of combining MPPT control, scalar U/f regulation, energy storage, and energy-efficient LED lighting to improve the technical and environmental performance of autonomous power-supply systems for livestock complexes.