Sig Energy Topic

Author	Message
wiseguy Guru Joined: 21/06/2018 Location: Australia Posts: 1294	Posted: 12:25pm 21 Dec 2025       As Pete suggested (thank you ) I am starting a thread on the Sig Energy products in the hope some will add to the information bank here whilst others can learn a bit more about the Sig systems apart from what sales tell you. I am not an authority at all on Sig products, far from it, but after just a few days I have learnt a few things about its performance.  Here is a link to my inverter topic where I started to discuss the Sig system that we have just installed. There are a few posts and some graphs and discussion there, that should have gone under this new topic here. Specifically relating to the systems own consumption from the battery reserve which for a 25kW inverter and 48kWk of storage appears to be at least ~400W. So you can read a bit more on how this discussion started with the above link. The Sig information there also was polluting my own inverter topic thread. I have a sense that Sig System will be a popular product in the Australian marketplace as it gets a foothold.  Yes there have been issues with the single-phase inverters that I think covered their 6 - 12kW units and which has been blamed on "installers" not terminating some connectors correctly. I understand that the output of affected controllers have been throttled back to minimise any further heat damage whilst replacement inverters are being sourced for a retrofit. I hope we hear more detail about the actual problem with some pictures of the resultant damage and comparisons of what a good termination and a bad one actually look like. Most installers I have met are quite knowledgeable to the point of being anal about their installation, surely the information must have been misleading or ambiguous for them to have got something so basic so wrong? The main feature of the Sig system that drew me in was its simple modular design. Each battery module has a nominal 8kWh of storage capacity. The modules have a connector that mates with another that can be either above or below it. The inverter mates with the top connector of the last battery module by just plonking it on top.  So you only purchased 16kWh but you now realise you need 24kWh? sure, just lift the inverter up off the top battery module and slide another battery module in place and put the inverter back on top again voila job done!  No wiring needs to be changed/touched, all the modules internal connector/bus system take care of that. Edited 2025-12-21 22:44 by wiseguy If at first you dont succeed, I suggest you avoid sky diving.... Cheers Mike