Mitker

Thanks for this 😉

In the long term I would rather avoid this empirical approach as I mentioned, but it may come handy in order to establish this theoretical generation curve as a start

Thanks for these They seem to confirm what @JBChiangRai was explaining about the extra potential production being unknown by the inverter (my hope was that, by having to 'discard' this excess some way, it would be able to figure it out..) This being said, I'll consider the Solar Assistant app for the other features

That's an interesting approach I didn't think about. Thanks By modelling a theoretical curve of the power generated by the system in sunny conditions on one side (as you did), and by comparing it with the data provided by a small panel as an indicator of the real conditions on the other side, maybe that combining both information would make it possible to estimate quite precisely the total power available at a given moment The next step would be to deduct the loads at that moment to have an idea of what's left available

and I do agree with your appreciation of the ShinePhone App I never had battery connected, as confirmed on the inverter screen info, but the app keeps telling me how well my batteries are currently charging (?!) Useless

Thanks for these infos Interesting to see that from the screenshot you sent, it looks like you get this very data I'm looking for, under the 'solar PV' wattage figure (5232 W). My only uncertainty it that this value is very close (by a couple of %) to the sum of the loads and the battery charge. Would this be due that by chance that day your use was that close from what the system was generating, or that what appears under 'solar PV' is just the sum of the uses plus some losses and roundings ? In the later case, it wouldn't inform about the 'untapped' portion of solar power Does it happen that the dashboard shows value of 'solar pv' wattage significantly higher than your loads + battery charge ? And yes, I had seen your video about the wifi remotely controlled breaker. Very convenient and I'm currently thinking about something like this for my own system Thanks again

Hi, I started running a Growatt SPF6000ES inverter, with which I'm globally satisfied, on an On-Grid (but no export) configuration. No batteries at this stage. In order to optimize the system, meanwhile the primary devices are already running and if there's any power produced by the panels unused, I'd like to automatically launch secondary equipments (ex: oxygenating pumps for the ponds, tank water heater, etc.). This implies I would need to collect this information (amount of extra power available) first, in real time and continuously. My question is : Is this a data that can be retrieved somehow from the inverter ? (I have no idea if the inverter is even in condition to estimate this value) I didn't find any mention of this on the UM or searching on the net. Thanks for any info or experience on the topic, ps: definitely not a geek in electronics, but I should be able to write down and inject some basic code on a board that would process the data and run a few relays accordingly 😉 ps2: I don't want to go the empirical way (progressively increasing loads until detecting the inverter must draw from the grid) - unpractical

indeed 😉

I think it is due to the proximity of the 'capturing device' (and the light conditions) and the distortion it creates The shorter the distance, the worse the distortion of the image Typically, a selfie will be an arm length away A mirror will usually be quite further and the 'image' will do a return trip from your face back to your eyes, so double this distance : your appearance will be much closer to the reality (plus, typically, mirrors are placed in an environment with favorable lighting) my 50 cents

From my experience, filtration is the key. I've never been able to totally get rid of chlorine, but I've succeeded reducing it to a ridiculous amount (for a small pool of 16 m3, a single tablet would suffice for 2-4 weeks use in plain Mediterranean summer). It was mostly needed at starting the season. The filter would run most of the day with adequate backwash every couple of days. Your solar system will erase the cost. You'd never smell any chlorine Removing any debris (min-skimmers ?) and preventing users to use the pool without prior shower are a must Good luck with your project (I actually plan something very similar and will follow this discussion)

If this could be of any use for someone looking into the topic : - We got in touch with a sales representative who asked 'the engineer'. After a while, we received an answer to our question : "yes" (it can manage Sodium-Ion batteries). I personally would have loved a somewhat more documented answer going further into the settings flexibility, but I guess we should be happy with that - The SPF-5000ES has been discontinued and is replaced by the SPF6000 ES Plus

Pristine installation (and the whole room too actually), congrats ! Interesting info From our contacts with Growatt Thailand, we've been told the SPF-5000ES isn't produced anymore, having been replaced by the SPF-6000ES. As for our question about the Sodium-Ion battery compatibility of their products, they're "consulting with the engineer" and we're still waiting for the answer. Meanwhile, I'm digging into the specs of the 6000 to check if it fits our needs on the other aspects of the project. Looks like this compatibility question, that seemed quite basic to me, isn't that obvious after all 😉

thanks. Good suggestion

I'll put them on my search list

I plan to go in 2 steps. But the 2 solar sets, including their ESS, would always, at a given time, be similar and communicate. The first step would rely on limited ESS packs based on current battery models. Given their low storage capacity, I see them more like a solar UPS than a full off-grid system The second step would go full mode with a final choice of battery type. It would mean significantly upscaling the initial ESS units (keeping the original type), or replacing them entirely by adopting another type available in the future (possibly the sodium I mentioned). (I wouldn't run two types of batteries at any stage, for ease of management) Therefor, my question about the Growatt inverter being able to manage the Sodium-Ion battery type.

Thanks for the info. I didn't know about this type. Indeed, low density is not an issue. However, one of the main advantages I see with the sodium type is that they don't rely on lithium (concerns in terms of sourcing channels and environmental impact).

I'm starting collecting the components of my DIY off-grid hybrid solar system. 2 sets x (10x440W panels + hybrid inverter + 25kWh ESS 48V) Panels, fittings and cables have been delivered. I'm now in the stage of selecting the inverter model. I'm thinking about 2 Growatt SPF-5000ES off-grid inverters, since the feed-backs seem generally positive and the price is attractive, given the functionalities. My choice is not final since I could find only a few local sellers on the net with very small volume of units sold (not too reassuring). But getting back to the topic… While reading about the batteries models on the market and in development, I got the feeling that sodium-ion type may become, in a near (?) future, a great solution for fixed storage systems; seems to tick so many boxes. I'm not about starting a discussion about the validity of such an assumption, but rather just taking it as an hypothesis in my search for an inverter. I may start with a small scale ESS with the types commonly offered on the market today (LiFePO4, AGM…), keeping the option for a significantly larger ESS pack within a few years, possibly adopting the sodium-ion type if they keep their promises meanwhile. Reading the Growatt user manual, I found that the settings allow for a "user-defined" battery type choice ("USE" in the list of choices at point 5 of the UM). No more info is provided about the parameters involved. Does it mean that this item could efficiently and safely manage sodium-ion batteries in the future, were the correct charging parameters set manually ? Is this "user-defined" option flexible enough ? Any advice/experience would be appreciated (about this model or another, reasonably reliable, that would explicitly cover this option). Thanks 😉

was he the smartest guy around, he'd deserve the same fate in my opinion

In two instances, the flight path, if accurate, shows a full U turn, with the first one happening early and lasting quite a stretch. Not the typical pattern of an air shuttle. I'm not an expert, but I'm surprised it isn't even mentioned, since a technical concern could have prompted an attempt to return to BKK, before dismissing the move. Of course, it could be just the pilots obliging some passenger request to fly over a specific spot or anything as innocuous as this, but checking if any exchange happened with the control at that moment would be interesting imho