Newbie Question - Cap on back to grid?

ELM327

https://www.boards.ie/discussion/comment/120360331#Comment_120360331

I just wouldnt mention anything to ESB and do it anyway

ELM327

https://www.boards.ie/discussion/comment/120360402#Comment_120360402

15kW ;)

And I can kinda see their point. My 6kW inverter was sending back nearly 7kW yesterday (I had to turn off and on battery for 5 mins to reset some stuff) and if their limit is already pushed at 6, I can't imagine they like 7!

Nalz

Interestingly enough, on my myenergi app the highest I see when sun is bright as bright is 6kwh. I've yet to see it go 0.1 over that

bullit_dodger

https://www.boards.ie/discussion/comment/120360758#Comment_120360758

I don't believe the problem is the cables, it's more about balancing the phases back at the substation. The more you allow people to export, the harder it (potentially) is to do that balancing. Typically your average estate in Ireland will have house #1 on phase 1, house #2 on phase 2, house #3 on phase 3 and then the cycle repeats.

In an ideal world everyone who has solar in the estate will be equally distributed across the phases. In reality that is statistically unlikely. NC7 isn't auto-approved as someone will have to look at the math and see if they can handle the export on that specific phase. So your €900 euros that you pay is for someone to look/see the loading and figure out if there's going to be a problem. Least that's my understanding of it.

ELM327

https://www.boards.ie/discussion/comment/120391046#Comment_120391046

Yes that's it in a nutshell re the NC7. Just saying that the immediate thing people worry about import or export is their own cable and then in house wiring like the CU and main fuse. As you say these are unlikely the limiting factor.

I'm debating going for the NC7 myself, after the energia day night EV tariff contract expires in July. The NC7 will give me a higher MEC, and then either a higher deemed FIT or - more likely - they will require me to get a smart meter and I will have metered export

slave1

My issue with the NC7 is you have to hand over a grand and only AFTER that are you exposed to esbnetworks who will soley determine what capital works are required and they have exclusivity on this and all at their pricing.

They could come back with a bill in the thousands and then your decide not worth it and your grand is gone.....

ELM327

Yes, that is an issue, but the transformer and local distribution grid capacities are available online so you'd have a good idea in advance whether the local transformer has slots available or not

But I agree, it's very cloak and dagger. If the FIT payments look to continue long term I'll pivot my "get 100% off grid and remove the ESB cable" aim to instead focus on making as much profit as possible from FIT and move to NC7.