This is what ends up driving me nuts about IoT - these should be the kinds of low-hanging fruit that are already solved.

Dishwasher, laundry, etc, should be able to ask the house when the most sensible time to run this load is. For grid-tied that could be off-peak, or even better, an API from your energy supplier. For off-grid, this could be during surplus generation once the batteries are already charged, etc.

Or perhaps we're midwinter and it makes more sense to run one today and the other tomorrow.

Instead they're more worried about making sure my dishwasher can re-order Genuine Partner-Brand Tablets, so I never have to worry about running out of Genuine Partner-Brand Tablets. Reducing my energy usage only seems to matter when it's legislated, but that kickback from Partner-Brand pays off every day.