Today was the first day of 2025 that the Powerwalls charged to 100% just from solar power. Once they got to full power, excess power was sent back into the grid. Check out the graph below:

Sunrise was at ~7 AM and the sky was pretty clear all day today. The Powerwall got to 100% around 2:48 PM and didn’t start discharging until around 3:50 PM. This is pretty cool since it’s only been 37 days since the Winter Solstice. I didn’t really expect to generate this much power until much closer to Spring.