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Comment by walrus01 | Hacker News Reader

It's extremely labor intensive and costly to put stuff up on the roof, and problematic in terms of electrical connector, electrical safety, and being proprietary for mounting and roof repair. Big ass PV panels that are 2.0 x 1.0 meter in size (or larger) are so cheap now for photovoltaic ground mounts that the labor and mounting can actually cost more than the panels.

460W panels can be something like $0.25 USD per STC watt in single pallet quantities shipped as LTL freight.

Or at least if you have to use your roof, just put them on boring aluminum rail mounts on roofs which are a much more known factor for roofing repair and labor.

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without having looked into the tesla roof tiles like at all (so stop reading here if you want any sort of informed discussion), are these things like placed individually and wired together individually? does every tile get a microinverter or is it like a net of tiles belong to one? is this potentially hundreds of connectors acrossed your roof that would be so many points of failure. if so that seems nuts and hardly worth the absurd cost just for aesthetics. feel like anyone who can afford this could just have whatever roof they want and then have their solar array farm nearby on their presumably many acres of land.

in the marine/rv world there are like walkable solar panels that you can literally just like walk on now, theres solar awnings, i dunno. just in my limited experience i'd be surprised if they dont have the christmas light problem (one goes out many go out) and solar arrays just seem to do awesome in panel configurations and i think in the consumer world theyre reaching 25% conversion, no idea what tesla is marketing but those guys are dorks with marketing anyways

How does one go about acquiring these?

By googling wholesale solar panel dealers, one example would be https://krannich-solar.com/us-en/

Assuming you're in the US 48 states there should be plenty of companies that'll take your money for a factory sealed pallet load of panels. They come wrapped up from the factory, basically all they do is do the invoicing/billing to you, they buy them by the 40' or 45' container load and then load them onto trucks at a loading dock.

PV panel factory datasheets will clearly specify how many are on a pallet and how many pallets fit in a single container.

Have you done this yourself?

I am curious what the installation process is like. It seems like all the home solar companies I've dealt with want to sell you the whole kit (panels, inverter, etc.). If you've done this, I am curious how your experience was.

I've done it for small scale off grid telecom projects in the 10 to 20kW class of total quantity of panels at one site, not actually at my home (which is surrounded by trees on all sides in the pacific northwest, I'd need to build a 40kW ground mount to have any reasonable amount of production). It's completely doable if you study electrical fundamentals but I'd also recommend hiring a pro to help out if you don't have the background.

There is considerable overlap between the knowledge base for -48VDC telecom battery/DC bus/breaker/fuse panel and distribution systems and PV/off grid solar stuff, so using some of the same people who do on-grid rectifier-to-telecom-DC-power-system work was fairly straightforward for us.

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