Here in the south the AC load does go down a lot at night in the summer. For most people that means the AC comes on less often during the night.
For me, with a variable speed heat pump and blower, it means at night my AC runs at lower power than during the day. However in the winter I can draw up to 10kW of power using heat strips as a consequence of replacing my old AC and nat gas furnace with the variable speed heat pump and heat strips. But that's not often. Also my hybrid water heater runs at 300W (replacing my old nat gas water heater). Finally, I usually charge my EV at it's Minimum Level 2 setting of 5.6kW (replacing most of our gasoline purchases throughout the year because it's not often we drive the ICE pickup).
These and other energy improvements like caulking cracks and adding insulation are improvements I did as part of going solar to make us more energy self-sufficient. To be honest, when I took on the homework of making my family more energy dependent I wasn't thinking about the grid or secondary distribution systems. I was thinking about energy consumption within my home and at the gas pump and what I could do to reduce how much power I pulled from the grid, how much natural gas I pulled from the pipes, and how much gasoline I bought at the pump. That includes lowering the load (power demand) more often in the day so that my inverters can supply the power (up to 18kW of continuous AC power) without having to pull the excess from the grid. Part of the game with solar is optimizing the DC power coming in and how it's stored in batteries. The other part of the game is minimizing how much power my home needs throughout the day (consume less power on avg per day than the free power coming in from solar) and how much it needs at any one point in time. Usually when I have multiple appliances running simultaneously I'm still well within the 18kW threshold my inverters can provide. Thus in the end I have to buy only 18% of my power from the grid throughout the year.
The end result is that in the past 12 power bills I pulled a total of 4,621kWh from the grid for my all-electric home including charging the EV (I estimate about 22K miles charged at home of the total 26K miles driven). Compare that with the 12 power bills before I went solar totaling 16,356kWh (at which time I also had natural gas bills and was buying a lot of gasoline at the pump).
You’ve done a great job improving energy efficiency and reducing draw for the grid. Well done!
In North Idaho (almost 48 degrees north and LOTS of 150 ft tall Ponderosa Pines and Fraser Firs) solar isn’t practical. I’ve done a lot of attic energy improvements including natural draft cupolas on the roof, adding more soffit vent area, adding plywood dams to increase attic insulation depth to 30 inches and putting a closed cell foam cap on the floor of the attic to air-seal it from the house. I did a lot of that to avoid warm air infiltrating the attic which causes ice dams to form.