I n the near future, households and businesses may increasingly rely on advanced AI personal assistants (AIPAs) to manage their daily operations, with potentially transformative effects on energy use, carbon emissions, and sustainability. AIPAs are digital agents powered by generative AI, such as large language models (LLMs) like those that underpin ChatGPT, which can produce human-like text, image, and video. 1 These AI-driven assistants interact with users through natural language interfaces, translating human requests into computer commands to manage various devices, tasks, and applications. 2 Current AIPAs, such as Amazon's Alexa, Microsoft's Cortana, Google Assistant, or Apple's Siri, are designed to assist with a relatively narrow set of tasks, and as such, they are far cry from Joi, the holographic and immensely capable AIPA featured in the movie "Blade Runner 2049". However, as the rapid technological development in generative AI continues, future AIPAs may become capable of mastering highly complex tasks that involve content creation, device integration, communication, coaching, real-time information retrieval and