The article begs the question of why solar panels exist that have any infrastructure for passwords and an administrator, and why suddenly a homeowner wants or needs such a thing.
I fail to see the need to hook solar panels up to the Internet in the first place. Is it so that you can monitor how much power they are generating? Why would you need that unless you were made a guarantee about how much power they would generate?
It is a fad. Everything has to be put under Internet control, even bricks.