Time-of-use and dynamic tariffs change the picture. Electricity starts to have a rhythm. Some hours are cheap. Some are expensive. Export and import prices can differ meaningfully. That is not bad news. It is where the opportunity starts.
Cheap hours create value if the home can charge, heat, cool or shift demand at the right moment. Expensive hours create value if the home can avoid buying energy without sacrificing comfort or blackout protection. With GridPassport, volatility becomes a source of value instead of another thing to monitor.
In the first published GridPassport V1 case study, the strongest tested safe scenario was 62.7% lower in net cost than a flat-import, fixed-export baseline for that home and period. That is early evidence from one home, not a universal savings promise. The broader point is simple: when the home can respond well, price movement becomes valuable.