The article discusses the potential of batteryless, energy-harvesting systems to transform the Internet of Things (IoT) into a more sustainable societal infrastructure. Traditional IoT devices, powered by batteries, face limitations due to high maintenance costs and environmental impacts. Batteryless devices, which use small capacitors as energy buffers, offer a solution by harvesting energy from their environment, such as through solar panels or ambient energy sources. However, the intermittent nature of energy availability poses significant challenges, including frequent energy failures, which can disrupt computation and lead to incorrect results. To address these challenges, researchers have developed new programming languages, compilers, and architectural designs that enable real-world applications of batteryless devices. These advancements include task-based programming models, energy-efficient dataflow architectures, and non-volatile memory solutions. Despite progress, the field still faces critical issues such as correctness guarantees, security, and the need for realistic deployment environments. The authors highlight six fundamental directions for future research, emphasizing the importance of deploying batteryless systems in realistic settings, ensuring correctness and security, developing energy-efficient computer architectures, and creating foundational infrastructure for scientific investigation. They also stress the need to understand user interactions and develop user-friendly development environments to make batteryless IoT accessible to a broader community. In conclusion, the article argues that batteryless, energy-harvesting systems have the potential to revolutionize IoT, but significant challenges must be addressed to realize this vision.The article discusses the potential of batteryless, energy-harvesting systems to transform the Internet of Things (IoT) into a more sustainable societal infrastructure. Traditional IoT devices, powered by batteries, face limitations due to high maintenance costs and environmental impacts. Batteryless devices, which use small capacitors as energy buffers, offer a solution by harvesting energy from their environment, such as through solar panels or ambient energy sources. However, the intermittent nature of energy availability poses significant challenges, including frequent energy failures, which can disrupt computation and lead to incorrect results. To address these challenges, researchers have developed new programming languages, compilers, and architectural designs that enable real-world applications of batteryless devices. These advancements include task-based programming models, energy-efficient dataflow architectures, and non-volatile memory solutions. Despite progress, the field still faces critical issues such as correctness guarantees, security, and the need for realistic deployment environments. The authors highlight six fundamental directions for future research, emphasizing the importance of deploying batteryless systems in realistic settings, ensuring correctness and security, developing energy-efficient computer architectures, and creating foundational infrastructure for scientific investigation. They also stress the need to understand user interactions and develop user-friendly development environments to make batteryless IoT accessible to a broader community. In conclusion, the article argues that batteryless, energy-harvesting systems have the potential to revolutionize IoT, but significant challenges must be addressed to realize this vision.