If there's a database that records which gadgets you own and what time of day you tend to leave them unguarded, and a public utility bureaucracy is tasked with

If there's a database that records which gadgets you own and what time of day you tend to leave them unguarded, and a public utility bureaucracy is tasked with keeping that database secure ... don't worry about your gadgets' power needs. That will be somebody else's problem soon enough.