Soldato
Your installer clearly only applied for a G98, and will as you say export limit your setup. Either they or there is an administrative error somewhere between your installer and the DNO.
Solar panels and battery - any real world reccomendations?
- Thread starter GinG
- Start date
Your installer clearly only applied for a G98, and will as you say export limit your setup. Either they or there is an administrative error somewhere between your installer and the DNO.
Already got 2x8.2kwh batteries, I thoght that may be the case, unlikely to be replacing boiler any time soon, only 8 years old.
Then there isn’t really anything you can do. To store any meaningful amount of hot water you need a proper hot water tank.
Have you considered air conditioning?
Soldato
Think he has AC already, though it's not really a store of energy, more a user of if it when it's hot/sunny
Would have been nice if they'd mentioned that, as obviously will reduce my export on the best days! Obviously saved the wait for the G99 but seems like it will hamper the system long term so probably not economical. Guess I can counter it slightly by messing with the battery charge rate, so on the best days rather than trying to fully charge the battery ASAP it will export until it reaches the limit and then starts diverting to the battery and charges it more slowly, but that will mean micro-managing it (or taking advantage of the published API for the Givenergy inverter and getting my hands dirty with some coding to try and automate that somewhat), unless there's something in the various settings somewhere that will already automate that.
Does anyone know if it would be possible to apply for a G99 in the future and then if successful, get the limit removed?
Soldato
I'd honestly just ask your installer to do it now, and come back and re-configure it once it is approved. Unless they got knocked back for G99 which is very, very rare, you can obviously asking them for a copy of the paperwork they submitted.
It's pretty vague on the details TBH, lists the details for the panels and the size and make of the battery, but no mention of the solar inverter at all in regards to make or power. So it's not like they've gone against what was specced, just slightly surprised at their choice, TBH when arranging it I was just happy to be able to get an installation sorted on a reasonable timescale (felt that being too specific about things could hold stuff up if there happened to be supply issues for anything) and at a decent price and very happy with the system otherwise.
Soldato
Do bear in mind that at the moment, export is a little meh anyway, you don't get paid much, and even at 3.6kw it's not like you can't export a good amount still.
If you're charging battery/using power/panel peak generation is lower due to being like E/W, then you may find it's rarely in a position to send more than 3.6kw back to the grid anyway.
If you have the system installed you can probably check this by seeing what your peak generation values are like.
If you're charging battery/using power/panel peak generation is lower due to being like E/W, then you may find it's rarely in a position to send more than 3.6kw back to the grid anyway.
If you have the system installed you can probably check this by seeing what your peak generation values are like.
Soldato
Just a note on powerwall from what I can tell the default is NOT to be whole home UPS, but it requires an extra/different module in order to do so (gateway 2)
Im not sure if gateway 2 is an upgraded more expensive option of the default or its now the default, I saw some guy was caught out by this, and the cost to get a gateway 2 was something like £1200
Maybe gateway 2 is standard now, but defo needs checking if your going that way
Im not sure if gateway 2 is an upgraded more expensive option of the default or its now the default, I saw some guy was caught out by this, and the cost to get a gateway 2 was something like £1200
Maybe gateway 2 is standard now, but defo needs checking if your going that way
True (although Agile Outgoing, which is what I'm going for, is paying some hefty amounts at the moment), but yes, peak generation is at the very highest, high 4KWs and that's pretty rare, mid 4KWs is probably more standard for the peak on a decent sunny day, then probably 300-400W for the house usage at any time, so as you say, actually not missing out on much. If I mess about with the battery a bit as well, to try and charge it when generation exceeds the peak export rather than at other times, then can probably even reduce the issue further (if I can be bothered messing about with it for just that little bit of extra export).
Associate
Just curious on this. Which Growatt inverter is this? I’m fairly sure the Solax batteries are 100+ volts, but most of the Growatt inverters are designed for 48v batteries?
I don't know but I can ask. I copied the quote from the email and pasted on here for advice/opinions.
Associate
Thanks.
I also now have a Solax inverter and battery quote as a possible alternative to the GivEnergy combination.
Soldato
For anyone living near Solihull.
I have 8 Lifepo4 170ah cells to give away.
So that's either 2 X 12V or 1X24V battery someone can make.
I have 8 Lifepo4 170ah cells to give away.
So that's either 2 X 12V or 1X24V battery someone can make.
Soldato
Unit error - kw not kWhYou generate as much as I use in a year in a day?!
I think you mean 4.3kw or 5.4kw.
Post edited
Associate
@Cadder Who did you get the quote from?
Solar Energy Store Ltd