Reducing solar installation costs: ideas?

[creeky]

How do we reduce the installation costs for solar?

My adventure in solar panel distribution systems has me thinking about what the real costs of solar are.

As of today. You can buy the "stuff" for a solar install for less money than the install itself.

So in terms of creating value and increasing adoption of solar, how do you reduce the installation cost?

First idea: reduce the installers overhead.

One installer said to me, "can I get "just in time" delivery of the panels." This brings up the issue of overhead. If an installer is carrying all the costs of acquiring, storing, transporting the not insubstantial materials of a solar install. That's a lot of capital. Lot of soft costs.

Would it be better to have deliveries to the home owners in segments? Can you break up the install?

When you build a custom house. There can be delays while you wait for the electrician. Windows.

For solar installation would it be better to have specialists who show up with the racking. Or have the racking at the site. And just install racking. Then the panel installers show up the next day. Or a week later. Install panels. Someone runs the wires. Then the electrician shows up. A tradesman he's expensive. Can we reduce his time per job?

Engineering. Like home inpectors. Can we get a line of specialists who do "pre-install" inspections. Note sizes. Locations. Rafter types. Plug the data into an "app" and give the homeowner the results?

Can the roof engineering be standardized. Right now a roofing assessment and sign off can cost upwards of 700. Permits here in Canada aren't that bad. But ... I hear in other areas they're terrible.

Anyway. This is what ran through my head last night.

Thoughts? Ideas? Brilliant flashes of insight?