First, they are banking on the fact that solar doesn't need a lot of repair and maintenance in general, and their design decreases some of the stresses that racked solar panels encounter. I imagine they are also over-sizing the system, and adding remote disconnects so they can disable a certain number of panels and still meet the contract.

And then when repair is needed, they just walk on it[1]. Seriously. I'm very curious as to what these pads they mention are like - big foam snow shoes, or walkways they rollout along a seam?

[1] https://www.erthos.com/reducing-degradation-rates-with-earth...