@cn from solar panels?
@cheesemaker Sharp panels, SolarEdge inverter, Tesla Powerwall 1 (that battery level).
@cheesemaker the array of raspberry pis that take the picture of the sky and log the data that draws the orange line–yes; the panels were professionally erected in August 2011; the changes, and addition of the Tesla was CTS Renewables in October 2016 : definitely.cn/2017/a-ye...
@cheesemaker the Powerwall makes it better, in that it’s now past [civil] sunset, and there’s still solar power until some time tomorrow (hopefully after sunrise).