SigEnergy SigenStor

Soarer · 07-04-2025 11:11PM #1

Does anyone have any real world experience of this setup?

Seems ideal, what with the modular design, and future proofed withe additional DC charging and Vehicle 2 Home capability.

What’s not sitting right with me is the warranty. There’s a 10 year warranty on the battery and inverter, but there appears to be only a 2 year warranty on the housing. Given that the housing is primarily plastic, what do you do 5 years down the line if the housing fails but the battery is still working perfectly?

Hopefully that’s not a daft question.

Soarer · 30-05-2025 05:41AM

Figured out the above.

The 2 year warranty is on the plastic surrounds. Nothing structural, so no panic.
I’m gonna ask another question. Maybe someone can help, and maybe this can be the official SigenStor thread for q&a?

Anyways, I got my SigenStor installed yesterday. I have my tariff prices entered, as well as my cheap electricity rate window (02:00 - 05:00 nightly).
I have the system set to ai mode.
I’ve just woken up and checked the system, and it hasn’t charged the battery at all within the 3 hour window,, which means I’m now depending on the solar to try fill 24kwh of battery before I can sell excess to the grid.
Why didn’t it charge the battery? Should I change the operation to time based control every night to force it to charge? And if I do that, does it restart the ai timer so it won’t be effective for another week? Or is this just something I need to suck up in the first week until the ai “learns@?

Thanks.

Soarer · 01-06-2025 03:27PM

Well, I seem to be on my own in this thread, but I'll carry on regardless.

I turned off ai mode and switched to timed. Set my charge and discharge times, and it's worked a treat.
For pig iron, I turned back on ai mode earlier today. When I originally turned it on the day of the install, ie. May 29th, it gave a little banner saying something like "ai mode will continue to learn until June 5th and will run in initial mode until then". Today, the same banner is there, with the same end date. So that kinda confirms my suspicion that it'll learn my behaviour in the background for the week, and then adjust if it thinks it can do better. How else would it learn that I want to discharge the battery every night and charge it for cheap every morning? The tariff details with the rates are entered in the "time based control" mode, not the ai mode.

And speaking of the rates, does anyone know how the "energy value" is calculated? As you can see by the image, it's saying the 5kWh I charged the battery with between 04:00 and 05:00 @ 5.45c/kWh has cost me nearly 98c, as opposed to the near 28c it should have. The other 2 hours previous to that are the same.

graememk · 01-06-2025 03:45PM

There must be a setting to tell it what your unit cost is..

oleras · 01-06-2025 03:55PM

Running similar gear so you wont be on your own for long !

Installer did say to just run in self consumption mode for a week, probably so i get used to the app etc.

Going to be signing up now to a better EV plan, currently with BG on a non EV plan so not getting any FIT, but I wouldn't worry abut a few weeks, i waited this long !

Soarer · 01-06-2025 04:33PM

https://www.boards.ie/discussion/comment/123505720#Comment_123505720

Yeah there is, and I input them day one.

Panic averted though. Just seems to be a glitch in the software somewhere. The previous night is more accurate.

Soarer · 01-06-2025 04:37PM

https://www.boards.ie/discussion/comment/123505775#Comment_123505775

Excellent, fair play.

I'm sure the novelty will wear off eventually, but at the minute the app is like heroin!

What I've noticed though is during my 3 hour charging window, the 5kW inverter charges the battery at 5.5kW but also runs the house at between 0.3 and 0.4kW. Not complaining like, just surprised.

oleras · 01-06-2025 05:18PM

yeah, ,had noticed it was getting to 5.5kW before clipping happened, and looking at the ESBN site, my MEC is 5.5kW, even though they are capped at 5? The 5kW inverter just runs at 5.5?

When i do sign up, probably Pinergy, what i intend is to have all excess solar go to the grid, ill charge the batteries in the EV window, along with running the immersion through a timer, wont be looking at any force discharge of batteries in the evening till im kinda used to the system and dont want to get caught some evening paying 38c for a unit !

Keeping the house load under the 5kW will be the hardest to avoid using their high unit rate, have managed to that so far but its fair easy say at breakfast to have a grill, hob, toaster and kettle all on the same time…never gave it thought before..certainly will though from now on !

oleras · 01-06-2025 05:19PM

No option to delete, wanted to quote your energy value graph a few posts up.

oleras · 01-06-2025 05:20PM

Is there an option to factor in the standing charge?

Soarer · 01-06-2025 05:42PM

https://www.boards.ie/discussion/comment/123506134#Comment_123506134

If there is, I haven't found it. Would be a great addition to work everything out.

graememk · 01-06-2025 05:45PM

https://www.boards.ie/discussion/comment/123505953#Comment_123505953

4 years in... Still checking it 😂.

Although it can't charge the battery and run the house at the same time..

But it could count the power it takes to charge the battery and run the house in that value.

Soarer · 01-06-2025 05:49PM

https://www.boards.ie/discussion/comment/123506127#Comment_123506127

You shouldn't get caught out really.

Depending on your battery size, start from 02:00 and work backwards. I've my minimum SOC for discharge set to 5%, and I have the discharge cycle set to start at 22:00. If it fully discharges, there's still 1.2kW available to run the house while we're asleep. If it doesn't, the charging starts at 02:00 anyway, and it'll try again the following night.

It's all trial and error, and the odd 38c charge is worth the gamble to fine tune things.

oleras · 01-06-2025 06:00PM

https://www.boards.ie/discussion/comment/123505953#Comment_123505953

Just reading this again, pulling from the grid like this in the EV window, you can basically have everything in your house on, the inverter and its restrictions will only affect what the inverter is doing, either charging your battery's or ticking over the house, you can run dishwasher, washing machines etc, it doesn't matter if it exceeds the 5.5kW is my understanding.

Soarer · 01-06-2025 06:02PM

https://www.boards.ie/discussion/comment/123506260#Comment_123506260

Exactly. Up to the rating of your main fuse anyway.

Soarer · 16-06-2025 01:56PM

Had the AI mode running for the last while, and it seemed to be doing ok. It wasn't dealing with my clipping though, which was pissing me off!

Now I'm not on Facebook, but I was able to scroll through this thread on SigEnergy.

Facebook Thread

A bit of the way down, there's a video posted by a lad called Jason Carmody. Obviously an Irish lad based on his accent. If he's a poster on here, top work and I'd appreciate a PM.
Anyways, watched his video and created 3 different user modes within the SigenStor app, to be used depending on the forecast (bad, mid, good).
Timed charging/discharging during the day, self consumption, force discharging at night.
So far, so good. Previously the most I'd seen from the solar is 5.5kW, obviously being clipped.
Today, even though here in Cork it's cloudy with sunny spells, it tipped 8.6kW generation. Considering my array is 9.66kWp, with 3.68kWp of that being north facing, that's a decent increase on a "normal" summer's day.

B9K9 · 26-06-2025 11:55AM

https://www.boards.ie/discussion/comment/123549222#Comment_123549222

how is it possible to get 8.6 kW from rated 5.5 KVA? Is the battery charging seperate?

Soarer · 26-06-2025 12:05PM

https://www.boards.ie/discussion/comment/123580754#Comment_123580754

The battery is DC coupled, so the energy coming from the PV doesn't need to go through the inverter.

B9K9 · 30-06-2025 02:19PM

As a back up semi retired car, we have a 2014 Nissan Leaf with has V2H capability. Originally battery was rated 24 kWh/22 usable, its present SoH is around 80-85%.

It was said over the years that an elderly car pack would do excellently in the role of house backup. I much prefer leave it in the car of course.

Question, can I integrate this into my sig inverter no battery setup?

graememk · 30-06-2025 05:26PM

Short answer, no.

The sigenergy V2H/G/DC charger is CCS while the leaf is chademo and I think it may need its own battery too.

Soarer · 30-06-2025 06:32PM

Yeah, unless it’s a SigEnergy product, there’ll be very little being integrated.

B9K9 · 25-07-2025 01:10PM

I may gather up some prices then to swap out my Sigenergy inverter for a Solis or whatever. Anyone know where to look for inverter price comparisons?

Sponsorgate · 21-08-2025 05:21PM

Got a Sigenergy system installed on Monday. I can't get off the app since! Its addictive.

Today has been my best day so far. 33 kwh & counting generated from solar.

9.8kwp system

12 panels west, 10 panels east

1 X 5 kwh SIGENERGY Inverter

2 X 10 kwh SIGENERGY Battery ( these are 9kwh batteries basically so 18kwh battery in total)

Still getting to grips with app. Changed to EV rate so charging batteries at 0.07

Below is today's production.

.

I imported Jason Carmody's schedules also so will probably try one of those tomorrow.

Heavy user - approx 10000kwh per year so I'm hoping to see a difference in my bills. As I didn't have a full summer of generation i guess I won't have a credit build up for this winter.

Soarer · 21-08-2025 09:11PM

Fair play.

You have a big enough battery that you can mess around with. Like, when the weather is going to be decent enough (not even very sunny), charge your battery for your full 3 hours (if with Pinergy or whoever), and then discharge for an hour or two again. A few euro made before you get out of bed!

Don't forget to leave enough capacity in your battery to help avoid clipping. And if you're filling up fast, you can go into "current mode", then "battery automation", then "instant manual control" and turn on "discharging" for a while.

Sponsorgate · 22-08-2025 04:38PM

https://www.boards.ie/discussion/comment/123743070#Comment_123743070

Thanks for info/tips Soarer. Yes , I'm with Energia so have a 4 hour window at night(2am to 6am) which is just right for my battery size. I discharge between midnight & 2am.Pending whats left in my battery , I will discharge a little earlier.

Yes , thanks for the clipping tip. I will need to monitor this on sunny days & good to know the "instant manual control"

SigEnergy SigenStor

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