this post was submitted on 06 Nov 2023
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[–] obinice@lemmy.world 57 points 1 year ago (5 children)

Home solar installations however remain just as expensive ):

But every little helps, so this is good news!

[–] Lizardom@lemmy.world 24 points 1 year ago (4 children)

I don't know how anyone affords home solar. We got 2 quotes last year to put solar on our 1000sqft roof from solar installers in our area. The first was just over $100k, the second $160k! The second quote was for more than we have remaining on our mortgage - how is anybody doing this?

[–] AA5B@lemmy.world 24 points 1 year ago* (last edited 1 year ago) (1 children)

That’s seems ridiculous: where are you? Are you sure that’s just solar, or would it also include batteries, maybe a “solar roof”, instead of solar on the roof? As far as I know, most of the systems (in us at least) are designed for shingled roofs: do you have tiles or slate, or something?

Where I live in the northeast us, it’s typically $20-30k for solar panels on my roof, only. I don’t need batteries because I’d stay grid-tied and my roof is pretty new. That’s still ridiculously expensive and beyond any reasonable payback but state incentives make it much more reasonable. They claim 4-7 years payback but since I can’t follow their math, it goes into the bin with the rest of advertising hogwash

[–] surewhynotlem@lemmy.world 8 points 1 year ago (1 children)

DIY solar is apparently a thing. Got exactly this reason.

[–] mnemonicmonkeys@sh.itjust.works 2 points 1 year ago (1 children)

I would recommend most people at least have professionals install the hardware going directly into and through the roof to avoid leaks. Unless there's nobody reputable you can hire and you are sure what you're doing.

Home repair is often fairly simple and can be done easily with some basic online tutorials, but there's so many people that don't do that and think up terrible solutions off the cuff.

[–] mosiacmango@lemm.ee 2 points 1 year ago* (last edited 1 year ago)

Metal roofs are also an option that go great with solar. There is a style of metal roof panels where you dont drill at all, you just clamp the panels on the ridges.

Roofing is its own ball of wax, but if youre handy or need a new one anyway they are a fine pair.

[–] JustEnoughDucks@feddit.nl 7 points 1 year ago (1 children)

Really depends on your area and amount of solar.

For the DIY approach with 20 panels here in belgium, it would be about 7000€. A contractor is estimated at around 9000€.

If you make a whole solar farm it would be of course, much more, but for a single family with <8000VA it is more reasonable.

To get a 100k+ quote your area must have horrible anti-solar installment fees or the company is not legit.

[–] Aceticon@lemmy.world 1 points 1 year ago* (last edited 1 year ago)

Keep mind that the prices in the article are FOB China (i.e. cover deliver to a ship in a port in China).

Shipping for Shenzhen (most likely port) will be between $1000 and $2000.

Duty tax for photovoltaic panels from China is 0% (I was curious so checked the TARIC database) but VAT gets added on top of it all (both the panels and the shipping) which depends on the country but will be around 20 - 25%

What I've seen generally (not solar panels but years ago I did look into importing LED lamps) is that doing it directly tends to result in it costing as little as 1/4 of the price but, on the other hand as a small purchaser you run certain risks in terms of quality and the manufacturer guarantees actually being possible to uphold (I've imported stuff were the failure rate was 10% and if you have to send stuff back, it's going to cost you).

It's worth considering for a big enough installation.

That said if one goes DYI, looking around in the EU for better prices is well worth it and does not carry anywhere the same risks (but also won't save you as much) as a retail buyer for something that's 7000€ - this kind of stuff is were the single market really makes a difference and might save you a few thousands of euros.

[–] SpaghettiYeti@lemmy.world 7 points 1 year ago

I paid 24k not counting rebates in 2021 for an 8kw system on the roof of a >2000 sq ft house. I think you need to find some other companies.

[–] Chreutz@lemmy.world 10 points 1 year ago (1 children)

Chiming in from Denmark.

Bought 8.5 kWp, a 10 kW inverter and a 7.5 kWh Battery in August 2022 for 120k DKK.

The price for the same system today is 70k DKK.

[–] shasta@lemm.ee 0 points 1 year ago (2 children)

That's pretty ridiculous imo. My system in total was around $45k including parts and installation. I got it Feb 2022. It's 17kW system with microinverters for every panel (42 panels). No battery though.

[–] Turun@feddit.de 7 points 1 year ago

From the top of my head, it's approximately 7 to 1 conversion.

So I totally agree: your prices are pretty ridiculous in the US! 300k DKK for 17kWp of solar?!?

[–] Chreutz@lemmy.world 1 points 1 year ago

Ridiculous cheap or ridiculous expensive?

I could have either switched to propane heating or oil heating for around $10,000 or switch to solar electric heating for around $12,000.

Not only was it fairly cheap, it also included a receptacle that sends extra energy back to the grid and I get paid for it.

The only time I have to pay for electricity is in the Winter months and that's because the heat is on the go constantly and we don't line dry in the winter.

[–] Fuck_u_spez_@sh.itjust.works 4 points 1 year ago (2 children)

I have some limited electrical engineering experience and don't like paying other people to do things that I think I can do myself. How likely do you guys think it would be that I'll end up burning my house down if I try to DIY a small solar installation?

[–] SirEDCaLot@lemmy.today 12 points 1 year ago (1 children)

It's actually not that hard. Microinverters have taken a lot of the danger out of it. Every one or two panels has an inverter, they can be individually controlled and tie together with 120 volt AC wiring, so you avoid the issue of 100+ volt DC strings that can't be turned off. And on the physical side, there are now rack systems that install very easily and look good. Designing and installing the system isn't hard. Just look up the documentation from Enphase or someone similar, you just need panels, micro inverters, a combiner panel, and maybe one of their computer management units. There's other manufacturers too but the concept is the same. Installing the solar is the easy part. Getting permits is the hard part. Municipalities throw up a ton of red tape and utilities throw up even more for any sort of grid connected system. So what would be a basic concept that a technician level person could design, ends up being this complicated thing that needs engineering sign-offs and stamped plans that have to be approved by the town and the power company and inspected 18 different ways. This leads a lot of people to do off-grid systems, that is, set up your own solar panels and batteries, and run some portion of your house off at using extension cords rather than hardwired. If you're just putting panels on the ground or on your deck and running extension cords, no need for permits.

[–] Fuck_u_spez_@sh.itjust.works 2 points 1 year ago (1 children)

Thanks, that's encouraging. So is it the roof construction, grid connectivity, or both that requires permits?

[–] SirEDCaLot@lemmy.today 2 points 1 year ago

Construction, electrical work, grid connection, sometimes architectural review to ensure the result isn't ugly, etc etc

[–] ikidd@lemmy.world 2 points 1 year ago

Start out with DIYSolarForum.com and see what you figure. It's not rocket surgery.