r/sigenergy

Has anyone had an issue with the MySigen app Power Metrics and Battery SOC plots lagging by a significant period? My app is currently showing ‘latest’ data from about 90 minutes ago rather than 5-10 minutes as usual. As best I can tell it started last night, so less than 24h ago. All time settings seem correct?

Edit: All stats outside of the graphs seem to be current, so not sure it is a data connectivity issue.

I'm not missing something obvious am I? There's no EMS mode or clean solution that prioritises PV export to grid first, and only charges the battery when the grid export limit is hit ? Such that I can manually force the battery to remain at a low SOC ready to soak up excess PV generation above the export limit? Something like "command export first". Seems like an oversight.

My home assistant workaround of dynamically tweaking the grid export limit during command discharge PV, is not ideal!

Hi,

Looking to install approx 12kw of SigEnergy batteries to my house.

Not going for Solar panels this year, as can take advantage of my 5p Kw/h off peak rate between 2300 and 0500 ..

Trying to make sense of SigEnergy's products though ... a bit of a head scratcher.

Apart from 2 (?) batteries, what else is needed ? An Inverter (Smart) and Controller ?

Plan on charging up the batteries off-peak, then running the house of them .. also have an EV with an Ohme charger.

Will probably get Solar panels next year, not a priority at the moment as I'm not South facing.

Any pointers / part numbers / recommendations most welcome

Just had a solar and battery system installed this week alongside my Ohme Home Pro. Running Intelligent Octopus Go.

The setup:

• 10 x Aiko 480W panels (4.8kWp)
• Sigenergy EC 6.0SP inverter with 18kWh battery on Time-based Control, charging from grid during off-peak
• Sigenergy HomePro SP-F gateway for whole home backup
• Ohme Home Pro managing car charging (Renault Scenic, 87kWh) via Intelligent Octopus Go
• Ohme wired through the Sigenergy HomePro gateway
• Ohme on Manual Control in Sigen app, Ohme app handling all scheduling

The problem: Ohme keeps failing to hit its 80% target overnight with "Charge unsuccessful" errors. Car starts at ~50% so needs around 20-30kWh. Grid peaks at 7-8kW early in the window then drops to near zero around 04:00 when the Sigen battery finishes - but the car is still only at 65% at that point. The data suggest the sigenergy battery is discharging to help serve the Ohme load.

I have Home Assistant with the Local Modbus integration if there's a HA solution.

Has anyone solved this? Should Max Grid Connection Current be set? Should the Ohme be on Auto rather than Manual in the Sigen app?

I recently joined Amber under their VPP, in NSW. I have a sigenergy battery and 20kw solar with the sigenergy 20kw inverter on 3p. My hot water system is a Solahart PowerStore 2.

Since starting with amber, I noticed the hot water system is not heating well at all. It only has the reserve tank full (roughly one third of the tank size) and it takes 10 minutes of running the hot water tap in order to start using that reserve hot water - all other hot water is around 20C, implying the main heating unit is not heating correctly.

Frustrated as I am with Solahart, I can't help but feel their PowerStore product is fundamentally flawed due to it needing signals from a unit with CT clamps connected I order to switch on he heating element. Under the hood it's just a Rheem hw system.

Would anyone have experienced this problem? And of so what would a solution be? Solahart have come in and confirm the PowerStore is working without fault, it's just not being told to heat. They want to charge me $1850 to wire it up. I laughed at this.

I have done significant research and note that it's possible to interface to the Solahart controller (a product from Combined Energy called the PM2 to which all CT clamps connect), with some smarts to turn relays on / off to control hot water heating at specific times of day or under certain conditions like solar generation thresholds etc. The combined energy usage comes with monthly subscription fees.

I also note that the sigenergy inverter can be interfaced with a second ethernet connection and enabling a port (502) by switching on the ModBus option - which can be done by installer or sigenergy.

Any info or help would be much appreciated. Am pretty close to giving up and throwing it out and getting a regular heat pump hw system.

Edit: to make things worse Solahart give absolutely NO way to control the function or management of the hot water system. No way for an owner to set an override, or to "heat now" etc. This is what frustrates me the most.

Hello All,

I'm currently in the process of getting solar quotes but I want a system that integrates well with Home Assistant locally. After a bit of research I noticed sigenergy can be controlled via modbus tcp or RS485. If you have a Sigenergy system can you tell me if the installer has to enable the modbus or can it be done with the user app afterwards ? Or if you think I'm better of going with a different system with more local control compatibility then please let me know. Basically I don't really want to be tied down to using a manufactures app. Any suggestions / info would be appreciated.

Is there any way of setting this up in the app (or with third parties), as I can't see anything that will allow it:

• If battery is lower than 50% at 00:30 then charge to 100% from grid
• If battery is 50% or higher at 00:30, do not charge from grid

Have installed sigenergy + intelligent go tariff for EV. Using sig AI which is doing well - with the exception of handling the extra octopus intelligent slots

As i currently set the tariff plan in sigen manually, and there's no integration for this intelligent tariff, for the hours (2330-530 offpeak) any extra window put in by octopus will not register - meaning when the charger pulls electric then, the system will dump the battery to power it.

I've managed to get all the tariffs into home assistant, including when octopus adds new windows - however cant see how i can automate the writing of the new windows into the sigen app. Anyone dealt with this?