Funding/Maintenance of Renewable Energy Infrastructure

Renewable energy is becoming more popular, especially as battery storage appears to be more reliable, but has anybody given any thought to the costs of replacement and/or maintenance of the infrastructure.  I am thinking of the cost of new panels and the frames holding them, batteries, control boxes, wiring, etc as they lose effectiveness over time.

For individuals: Five dollars a fortnight over twenty years ($2600 without interest) in a dedicated fund may work for replacement, but is something to think about.

For Companies: Is money being set aside for maintenance/cleaning, and for eventual replacement?

There is quite a lot to think about.