[atourgates]

DIY is viable if you're a bit nutters (like me).

I just paid ~$35k (pre-now-expired-tax-break) to install a grid-tied 25kw ground mount system. I DIY'd everything except the connection between the array and the grid, which I paid an electrician to do, and the trenching which I paid my buddy with a mini-excavator to do.

It was a bit of a PITA, but mostly because I didn't finally make up my mind to do it until October and had to have it constructed by Dec 31st to take advantage of the expiring tax credit. If I'd given myself 6 months, it would have still been a big project, but way less stressful.

My neighbor's paid the same price to a contractor for a 11kw system.

Even at 46°N, and with relatively cheap electricity, my system should pay for itself in 6-8 years.

[jeffbee]

Being an honorary or actual redneck in an exurban American setting will be the sweet spot for this. Your neighbor's rusting Bobcat is not useless after all. You have the space for ground mounting. I toyed with a rooftop solar DIY project with an electrician handling the AC side, but in my urban context PG&E wanted a six-figure fee for a subterranean transformer upgrade. In 2024 the state regulator established rules that PG&E can't charge for that kind of service upgrade so maybe I should start considering it again.

[folmar]

In EU it would be some $3k for inverter, $5k for panels, another $5k for cables, connectors and mounting and that's it if you DIY everything. Prices with VAT included.

[zhivota]

Same in the Philippines here, and we're all buying the same Chinese materials at the end of the day so somehow Americans are getting really fleeced hard on this equipment.

Payback time is 2-4 years.

It reminds of healthcare and infrastructure in the US. When you really dig into why both are so expensive, it's literally every step. Every link in the chain between supplier and consumer is some kind of inefficient market, or burdened by regulations, etc.

Americans are just so rich they don't care enough to see these huge margins and undercut the competition, which is what happens here and keeps markets much more efficient.

[cuttothechase]

Do you have a blog or a writeup about this?

What would have been the cost if it was not DIY'd? Is this doable only in a rural/semi-urban settings?

[hex4def6]

I was in the same boat.

I'm in the bay area, did a roof mount system. ~9.5kW with Enphase microinverters.

I think it cost be ~15k all in. The usual installer price is normally around $2.5-$3/w (so about $25k - $30k).

I got someone to do the plans (because I was under the gun to get on NEM2), but that was $300 well spent.

Did it all myself -- mounting, running conduit / wiring etc. Wasn't too bad. Probably about 3-4 Saturdays of work.

Here's my install log: https://www.reddit.com/r/diySolar/comments/1c6jfjv/finally_d...

[namibj]

Modern cable trenching at least if you're not hitting rocks is to take a wet vac and a pressure washer and just cut a slit, make sure you got ergonomics sorted and a place to dump the sludge for drying (c.f. kiddie pool, or one of those pools that rely on the top inflated ring to keep the otherwise loose bag of water from spilling...except made from geotextile or something rock/dirt friendly that'll filter the sediment letting the water seep past) before you backfill.