Like, I understand we have the technology to monitor if grid disappears and self-disable, and a lot of hard-wired rooftop solar does that, but unsure if any soft-wired units have been approved.
My fridge is inverter drive and likely operates off DC at its core. Hopefully Samsung or somebody in the future will put a 48VDC port and anyone can plug in a solar panel and it will soak up whatever juice comes off that and use grid for the rest. That avoids batteries (because the fridge does thermal banking), electricians (because 48V is usually excluded), and inverter drive fridges tend to be continuous drive, so running slower when the sun is marginal or full-speed when full works nicely.
And it puts some juice into the thing I really depend on if the power goes out (even if only during the day).
And consumers can cheaply add some phase change materials for a boost in thermal banking (like really salty water bottles).
Put a couple USB charging ports and 12V ports on it too that switch between solar & grid. My router and modem sit on the top of my fridge and use 12V
And then we do away with the increasingly unnecessary DC->AC->DC conversion cycles.
Seems like the lowest hanging fruit to inexpensive mass (mild) solarization.
I always question why we choose between 0kW solar installs OR multi-kW residential installs when we could do massive 250w solar rollouts at low cost with very high efficiency.