> Who will you call to repair it?

Solar installer. Or DIY if you're handy.

> Who will pay for it?

Homeowner or insurance.

> How many days will it take?

Depends on the availability of installers. Or your skills.

I don't know why this is some gotcha. How many times have you had a storm rip your roof off and take down the entire neighborhood's grid? And if that happened would you still live in your house or find temporary accomodation?