Will do fore sure!!! Thanks, of the concept is solid and it is possible, I’ll start making the purchases, I can’t wait to star playing with all the toys!
You can also easily charge your Pylontech with a 230V to 48V charger. Then you don’t need an Orion and can just use the 24V/230V inverter… done… you can also switch the charger ON and OFF somehow… the Orion doesn’t have a very high charging capacity… the 230/48V chargers have much more… Think about it 
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Ac coupling… I think this will makey life to complicated, I have read about it but for once I can’t understand how it works, something about Hz. It was my first thought when I started working I’m this project, but it has so many potential problems, specially with and old and obsolete inversor that I don’t really have documentation on it.
Going directly from the inversor to the pylontech battery whit a charger is something I have thought about, but then I can’t know if I’m draining to much the lead batteries. I’ll need also a smartshunt right? And then I have one more conversion with one more step loosing energy. At least that was my reasoning
How much capacity are we talking about for the lead batteries? 
You always have transmission losses… that’s true… but I don’t have a comparison between Orion and Inverter… Only the power would be greater..
And Yes … you need a Shunt …
In the old days I think they were 14kw but only half was really useful as I understand, soaybe 7kw. But I don’t think that is the reality right now, maybe 3kw? 4?
Then use the Orion … 
you can adjust it better and monitor it too… 
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There are political reason to keep the old system, share of use and other things, so I can’t really get rid of it. But for me the only important part is the pelton turbine, it is really useful in the fall because of the fog and rain.
Water has incredibly good and consistent performance… and you can also store water reserves in other ways if necessary. Good Pelton technology… definitely keep it and use it… as they say… “every little helps”… but that’s a bad translation…
“Small animals also produce manure” 
… bad too
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One more question, I can’t find a 150v protector. I’ll use the mppt 250/70, so I can go with the protector up to 250V?
In all the websites and big vendors, I can’t finde DC protectors of 150v and 250v… It’s making me crazy
I love both hahaha thanks
As surge protection for your PV system? 
Yes sorry
Is there a risk of lightning striking? Is it a flat installation?
It would be more important to have surge protection from the outside via the mains connection… but those are the regulations we have…
I don’t use surge protection for my 150/35… there is simply NO RISK
But of course there is also surge protection… installed in our so-called GAK… for 150V
The installation is in a mountain in the north of Cáceres, Spain. So… I have never had a strike really near and there are a lot of trees… But… You know… Better wrong than sorry… lol
I believe that… IF lightning strikes, then the energy MUST be dissipated PROPERLY. Otherwise, EVERYTHING will be destroyed…
Foundation grounding or deep grounding is necessary
So the grounding MUST be proper … Otherwise, you might as well attract lightning … nice and easy with a little flag on the roof during a thunderstorm … saying … Come here, lightning …
THAT’S WHY … Surge protection from the outside … much more important if there are trees in the vicinity
!!! That’s my personal opinion !!!
Yes that is why I’m struggling to find the right surge protector for the system… I can only find 600V… And as Mike has explained to me, that that won’t do the job, I need a 150v and now that I’ll put a mpot of 250, I need one that limits the surge to 250v… I’ll keep looking for one that I can purchase in Spain.
Don’t get confused!!! The surge protection is UP TO 600V… as long as you stay below that… perfect… ABOVE 600V, the arc strikes and disconnects the system…
So you can also use a 250V surge protector for a 150 MPPT…
I am sooooo confused. If I get a surge higher that 250v and it doesn’t get derivated to ground, won’t that kill my mppt and other things? 600v will not protect me then. Right?
It’s NOT about overvoltage from your solar modules… Where would that come from???
It’s about a lightning strike in the roof area… which is well over 600V… I think… and you probably do too