A report by BBC Panorama highlights a significant regional disparity in the functionality of smart energy meters across Great Britain. While southern regions rely on cell technology, meters in northern England and Scotland depend on radio signals, leading to issues like manual readings and estimated bills. The government mandates that energy suppliers ensure smart meters work efficiently, yet 3.5 million devices are reportedly malfunctioning. Experts express concerns over the ineffectiveness of this technology, particularly for northern users, as the initial promise of smart meters to save costs and support a green energy future remains unfulfilled.