if the same solar also had enough battery capacity, sure. But they do not, they still need to buy at out of solar peak and that just causes problems for both sides.
I think grid should start moving into selling storage as a service. Just put a bunch of bulk storage at every transformer station and buy solar from consumers at solar peak, sell them back say 80% of it (or whatever margin is required to pay for it) off peak.
That way utility no longer have to haul megawatts all the way from the power plant all the time, any peak can be hauled from the batteries and let the other types of power plant more time to spool up, and the grid is more resilient to outages (assuming you were lucky and battery bank local to you still had some charge
LFP chemistries are approaching ~$50/kWh, and CATL's sodium chemistry is supposed to be ~$40/kWh (per CATL); soon it will be more expensive to ship the battery storage than the storage itself.
That's because of the huge range of voltages in the charge curve - resistive losses in wiring scale with the square of current. When the voltage drops, the current needs to increase for the same power.
If you can accept low power/current output (which EVs cant, but homes can), this isn't so bad.
EVs have giant batteries - they can be connected via their DC ports and charged/discharged via solar inverters - technically. The current spec for CCS and NACS doesn't allow for this (Chademo did, but they lost the 'format war'). Giant effing oversight on manufacturers' part if you ask me.
Some people have managed to trick their cars into reverse charging via solar hybrid inverters and some custom hardware and it works as advertised - which is no surprise since its a lithium battery charge controller charging/discharing a solar battery.
If you could use your 60kWh EV battery on top of the 10-20 kWh you have at home, it would be a game changer, most people could power their homes for a week on that sort of capacity.
Replacing all the road vehicles in the US with 70 kWh BEVs would mean their battery capacity would equal about 40 hours of the average US grid power consumption.
BTW, this will mean that EV charging is going to have to have variable rates, or else people will just ride over Dunkleflauten by charging up their EV at a charger, driving back, then using it to power the home.
I think grid should start moving into selling storage as a service. Just put a bunch of bulk storage at every transformer station and buy solar from consumers at solar peak, sell them back say 80% of it (or whatever margin is required to pay for it) off peak.
That way utility no longer have to haul megawatts all the way from the power plant all the time, any peak can be hauled from the batteries and let the other types of power plant more time to spool up, and the grid is more resilient to outages (assuming you were lucky and battery bank local to you still had some charge