Mono vs Bifacial ?

[Joeboy]

Have you got 3 of the 585's connected to a Hoymiles Joe? If so, any chance of a link to which one you had and now have? Wanting to look at adding 2/3/4 panels to a shed roof/ground next to it. (apologies for the sidetrack)

Pudding,
Depending on your numbers and lust for PV these units are great.
https://solarmagazine.com/2023/01/hoymi ... inverters/

The unit I fitted was a 1000 2T and it was 4 2nd hand 250W panels or so (can't quite remember. might have been 270W). I paralleled the four panels into two pairs via inexpensive Y leads. Make sure you match the way you run your panels to the limits of the micro before pressing buy! I'm sure they (the micro) has built in throttling but i've not looked into that. It was nice walking through the garage yesterday and that set of panels which are on the wrong side of the house at this time of year were honking out 350W.

https://battlebornbatteries.com/solar-p ... Cb2TopS1QO

I look forward to reading and maybe seeing what you put up.

[pudding]

Thanks for the links. So with these, are they like standard inverters then that require DNO notification or G99 app before fitting? And with the lower capacity ones, have you simply plugged them into a socket, or always gone via AC breaker to MCB on a distribution board?

[Joeboy]

Thanks for the links. So with these, are they like standard inverters then that require DNO notification or G99 app before fitting? And with the lower capacity ones, have you simply plugged them into a socket, or always gone via AC breaker to MCB on a distribution board?

I plug them straight in. We have three in total. An 800W, 1kW and a 400W over in Turkey. Each on a different property. I also have Enphase M215's too. The Hoymiles are the best I've seen.

The beauty of these is literally diy plug & play. You need a field connecter which is about a tenner. Wire it onto a good gauge cable and quality plug or tag it back to a permanent connection.

This shop in Germany has a great range and professional.


Field connecter

[knighty]

Sounds like a great plan Knighty. 11.7kW of solar will make a massive splash. Excited for you. In the North we now only really have a couple of dead solar months. Dec & January. Even Nov & February produce something useable when a larger scal system is gathering. The rest of the Year is at no cost or profit. Which then pays for the dead solar months. The further South you are, the better it will.likely be.

Personally I'd like to squeeze in some more insulation as that's the ultimate fit & forget.

Groundmount PV is a non starter? Although that image is pretty good for easy access cleaning,

my bad, when I checked solar panel numbers in my spread sheet (I've been doing rood design ideas) - I meant ~20kw south and ~20kw north!

yes on the insulation, but the list of jobs that need doing is a mile long and a lot needs doing before the extra insulation goes in (re-wire and new plumbing and radiators)

I have some batteries already... and my pl'an is to just keep adding more to the point we can charge overnight in the winter and never import any during the day

[Joeboy]

Sounds like a great plan Knighty. 11.7kW of solar will make a massive splash. Excited for you. In the North we now only really have a couple of dead solar months. Dec & January. Even Nov & February produce something useable when a larger scal system is gathering. The rest of the Year is at no cost or profit. Which then pays for the dead solar months. The further South you are, the better it will.likely be.

Personally I'd like to squeeze in some more insulation as that's the ultimate fit & forget.

Groundmount PV is a non starter? Although that image is pretty good for easy access cleaning,

my bad, when I checked solar panel numbers in my spread sheet (I've been doing rood design ideas) - I meant ~20kw south and ~20kw north!

yes on the insulation, but the list of jobs that need doing is a mile long and a lot needs doing before the extra insulation goes in (re-wire and new plumbing and radiators)

I have some batteries already... and my pl'an is to just keep adding more to the point we can charge overnight in the winter and never import any during the day

I'll give you some old guy advice. We've been in this house for 28 years and my one regret after accruing all that time in the one spot is that I didn't address the insulation correctly and give it a higher priority. It literally is the keystone to it all. My biggest regret is the front lounge wall. That was a colder room for nearly 30 years! Yes indeed, what a tit!

Keep that somewhere in your mind. All the best and looking forward to seeing what you get up to.

[knighty]

apart from loft and under floor, it'll have to be exterior wall insulation, but that's a long way off yet... but I'm going to insulate the hell out of the place!

[SimonSays]

I now have some north facing bifacial panels - 3.6kWp worth of 8x 450w DMEGC panels - to complement my south facing monofacial 3.2kWp array (yes, tiny in the scheme of some of your arrays, but it's all I can fit).

All panels are on a 30deg pitched roof.

The bifacials typically outgenerate the monofacial panels by a ratio larger than 3.6/3.2 while we have the overcast conditions like south England does today. I've been seeing a ratio of 1.2:1 so I'd definitely not say "not worth putting bifacial panels on a roof" because I can see some benefit, especially at the prices you can buy these panels from the likes of City Plumbing.