This is exactly the principle and approach I am talking about.
UPD: I’ll add fuel to the fire and hopefully get a few installers to rethink their approach to the job.
I don’t make any money on supplying the equipment. The client receives every component without any commercial interest on my part. My markup on materials and components is 0. 
Alex + Diessel or anyone - please look at this design and let me know if I have this wrong or can it work. Lets say I am happy with running at sub-450v and thus 15 Strings between 40m and 60m from the roof top - does putting in 2 x 20kw multiplus on each phase seem workable? How does one set max limits on draw and charge etc if there are 6 Multi-plus units ? If there is an over-draw (Trip) do they all turn off? How will it work with 6 Inverters like this ?
You’re approaching the project from the wrong angle from the outset, and asking the wrong question.
Just because a solution suits you and is technically achievable using an LV platform doesn’t mean it’s an efficient solution for a load of this size. Nor does it mean it’s comparable or competitive with HV systems in terms of cost or operation.
You’re asking this question because you haven’t worked with systems above 10 kW of power demand before.
And, by the looks of it, your client isn’t able to set out clear technical requirements either.
In high-power systems, the key factors are efficiency and stability.
Using LV components, it’s simply not possible to achieve the same level of efficiency as an HV system. There are also plenty of other considerations, such as DC bus design, cable sizing, electrical and physical layout, and so on.
This is a different league altogether, in terms of scale, engineering, and responsibility. 
UPD: I really like Victron products - their ecosystem, software, and a lot more besides. But when it comes to high-load commercial systems rated at 50 kW and above, I’m afraid there’s simply no place for Victron in my projects. I genuinely hope that changes soon.
I take a picture of a hand drawing over any AI slop. That schematic is hard to swallow.
Are you sure that you can run eight 625W panels on a single MPPT input? Since you dont specify which panels exactly you plan to use, we can only guess. But using SAAE 625W panels, a string of eight crosses 440V at 30°C already. I guess the location is south africa, at least that what a quick google search tells me for the project name. So i also assume freezing winters arent a thing there. But 30°C and already surpassing max Voc?
Large low voltage systems are certainly possible, but combining AC and DC coupled PV seems to be very common. And understandable.
Yeah, yeah, yeah.
That’s exactly what I said above.
And that’s only 150 kWh.
Just the DC bus arrangement alone would cost as much as a wing from an aeroplane.
I have been following this thread for several days and have repeatedly tried, by way of hints, to make the main point that neither the other competent participants nor the Victron staff have raised. Perhaps everyone is waiting for a big bonfire in South Africa, only to dance around it afterwards, singing, “We told you so, we warned you.”
So I will be direct: - Close and hide this thread, now!
Here are the reasons:
@CraigK, you are overreaching. No offence intended, but what you call a project looks, to me, like nothing more than a conceptual flyer. It is nowhere near proper project documentation. It carries significant risks for you personally, for your client, and for the guests of the hotel complex where you intend to implement this integration. It is premature for you to be thinking about high-load systems, let alone parallel configurations, whether based on LV or HV components.
You don’t have sufficient experience or qualifications for projects of this nature. If you want to improve your competence, Victron offers plenty of opportunities to learn.
This so-called project also creates reputational risk for Victron. Consequences will follow - and they inevitably will if anyone takes a closer look at the design figures presented in that flyer.
Even greater risks are borne by the owner of the commercial facility, which, I repeat, is a HoReCa establishment. This is not a case of burning down a couple of farm sheds or two cabins at a small factory, perhaps without casualties. Here, the consequences could very well involve loss of life.
Personally, I believe discussions involving high-load and HV systems should either be prohibited or, at the very least, hidden from public view so as not to encourage inexperienced individuals to undertake inherently dangerous work.
That concludes my participation in this discussion.
I have a smaller system, and opted for a combination of 450/200 DC chargers and Fronoius grid tied inverters on AC1out. The Victron controls the Fronius output perfectly 99% of the time. The only complication occurs after a power outage because Victron does not shut the Fronius down in the 1min after the grid returns, so because Victron is synchronizing with the grid the Fronoius ramps up to full production. And this trips the battery if it is already full (even though my system obeys the 1-1 rule. 20kW Fronius, 40kWhr battery) We used node red with an external relay to shut the Fronius down in this scenario.