Terrestrial wireless communication networks are critical to modern society. However, in densely populated urban areas, they consume substantial amounts of energy. For instance, Digital Audio Broadcasting Plus (DAB+) requires significant transmission power to maintain reliable coverage, especially in moving vehicles. Traditional receiving antennas, such as whip monopoles, are often inefficient and contribute to higher energy consumption at the transmission side. This paper explores the application of square phased array antennas as a solution to improve DAB+ signal reception in vehicles and, consequently, reduce energy consumption across the network. Through simulations, it is demonstrated that a square phased array can enhance reception by approximately 6 dB. This improved reception could theoretically enable a 6 dB reduction in required trans- mitting power for DAB+ base stations, potentially resulting in a 75% reduction in energy consumption per transmitter. When scaled globally and under idealized assumptions for widespread adoption, this could lead to estimated annual energy savings of approximately 721.9 GWh per year. The integration of such antennas into DAB+ infrastructure not only offers a path towards energy savings but also reduces interference and electromagnetic pollution. The study highlights the potential of phased arrays to support sustainable broadcasting, with further experimental validation required to confirm these findings under real-world conditions.