No, the smart meters generally don't have this functionality. Other appliances can in theory hook into the market information from the supplier, but this isn't

No, the smart meters generally don't have this functionality. Other appliances can in theory hook into the market information from the supplier, but this isn't very common, and is generally under the user's control. The most common thing where users cede some control is home battery systems, where some providers give a discount or outright pay the users for control over using the batteries as grid storage ("virtual power plant"). But this is independent of the smart meter, a smart meter is mostly useful as someone with a home battery or EV because you can get acess to minute-by-minute energy pricing, whuch will generally save you money if you can shift your draw from the grid to when it's cheap. (I will say for the average consumer at the moment a smart meter only gives you a mild convenience increase, and is likely not worth the trouble. I haven't got one installed myself, despite and now in part because my energy provider has been hounding me to install one, due to this push from the government. There's no reason to be an early adopter for this if the benefits aren't good, given how badly scuffed the first iteration was)