This paper assesses the performance, cost, and environmental impacts of four grid-connected energy configurations in Reykjavik, Iceland. The study compares scenarios that integrate photovoltaic (PV) systems and battery storage with the traditional grid supply. The communication base station installs solar panels outdoors, and adds MPPT solar controllers and other equipment in the computer room. The power generated by solar energy is used by the DC load of the base station computer room, and the insufficient power is supplemented by energy storage. Therefore, aiming to optimize the energy utilization efficiency of 5G base stations, a novel distributed photovoltaic 5G base station DC microgrid structure and an energy management strategy based on the Curve Fitting–Perturb and Observe–Incremental Conductance (CF-P&O-INC) Maximum Power Point. Summary: This article explores how integrating photovoltaic (PV) systems with energy storage can revolutionize power supply for communication base stations. Learn about cost savings, reliability improvements, and real-world case studies driving adoption in telecom infrastructure. Why Communication. Hybrid Renewable Energy Systems (HRESs) offer a promising approach by combining renewable resources, conventional energy sources, and energy storage to address the challenges of standalone renewable systems, such as intermittency and high initial costs. In summer, the city can harness an average of 4.