Associate
Solar panels and battery - any real world reccomendations?
- Thread starter GinG
- Start date
i'm using my own quote as comparison
£6885 + 1450 (as i bought second battery separately) = £8335 for 10x 440w Jinko panels, 3.6kw Sunsynk inverter, 9.2kwh Sunsynk battery (2x 5.12kwh 90% dod)
less the £500 for scaffolding...my system cost £7835
so, for your 8x435w panels, 5kw inverter and 9.5kwh battery
£7700 is priced very competitively
installers normally charge £150-200 per panel - their cost price is £80-100 but paying for the labour costs etc
(that being said, I'm not sure about the quality of JA panels...so do your research)
There is shading on both roof faces from local trees. It sounds as it is a good ask to have these internally mounted to assist in maintenance should one fail.
Oh damn.
Associate
Thanks for this,.
Will it output at 5kw if from both solar and battery?
Soldato
Inverters are more efficient closer to capacity than running at a low % level.
Its partly one of the reasons people overpanel as it means the inverter will be running in the more efficient part of its curve more often.
Its partly one of the reasons people overpanel as it means the inverter will be running in the more efficient part of its curve more often.
Associate
Thanks so much.
So all good with the 3.6.
Anyone else comment on the price. Sorry to ask but this really is a big investment for me and need to get it right.
It will yeah, but really I agree with MKW above.
He'd be better off ditching the givenergy inverter for a brand that can output the 5kw's imo
A 3.6kw inverter in the home is brainless imo, turn some high draw appliances on and no matter what the solar or battery's are doing you will be drawing from the grid what's the point in that?
Boil your kettle while sticking some toast on that's 4kw alone
A 3.6kw inverter in the home is brainless imo, turn some high draw appliances on and no matter what the solar or battery's are doing you will be drawing from the grid what's the point in that?
Boil your kettle while sticking some toast on that's 4kw alone
Associate
Thank you so much.
I tried to read as much as I could here but realise the limits of my knowledge.
Learnt years ago,ask and then ask again from the people that do know
Depends on what the cost benefit is ultimately. While your argument is correct, those appliances are running for 2 mins tops to the grid in terms of KWH is very small.
I went with the all on one but I wanted the extra charge/discharge because I’ve got an 10kwp (east/west) array and a heat pump going in.
Once you knock off the draw from the heat pump and your base load, you’ve not got a lot left from 3.5kw and 5kw is marginal.
Soldato
Agree with mr sk8 here.
when I look at my time above 3.6kwh on my inverter its actually quite rare that I spend much time above that.
Most high draw appliances, dishwashers, ovens, washing machines only do little spurts of high draw.
Even things like tumble driers spend a lot less time using peak than you think.
Unless you literally stick them all on at the same time so they all need to heat at the same time then your not going to see many peaks of any sustained time over 3.6
Its a balance for sure.
The one thing I would consider is the amount you want to risk on saving sessions (demand reduction).
My 5.5 has meant I have roughly double the amount that hippo has made this year vs his 3.6
I mean its a gamble, last year was a different methodology and we were far closer. This year with export being the key I have far better benefit made.
We have similar systems in regards what we generate, what we use daily etc.
when I look at my time above 3.6kwh on my inverter its actually quite rare that I spend much time above that.
Most high draw appliances, dishwashers, ovens, washing machines only do little spurts of high draw.
Even things like tumble driers spend a lot less time using peak than you think.
Unless you literally stick them all on at the same time so they all need to heat at the same time then your not going to see many peaks of any sustained time over 3.6
Its a balance for sure.
The one thing I would consider is the amount you want to risk on saving sessions (demand reduction).
My 5.5 has meant I have roughly double the amount that hippo has made this year vs his 3.6
I mean its a gamble, last year was a different methodology and we were far closer. This year with export being the key I have far better benefit made.
We have similar systems in regards what we generate, what we use daily etc.
Associate
Since having the intelligent octopus tariff we load shift all dishwashing, washing machine use to the cheaper overnight also.
Anyone else comment on the price please.
Hate to tell him yes and then find out it's too expensive.
I think it's pretty good but no expert.
I've had national company quote £8400.
Should I keep asking for more quotes.
it isn't expensive, and probably cheaper than average
my installers were a company called Spectra Solar up in Wigan, but they do installations in the Midlands too (I live in Brum)
get a quote off them if you want to compare
i can fully recommend Spectra, if you do decide to go with them as well
Associate
Thanks Tamzy and everyone else for helping me very much appreciated.it isn't expensive, and probably cheaper than average
my installers were a company called Spectra Solar up in Wigan, but they do installations in the Midlands too (I live in Brum)
get a quote off them if you want to compare
i can fully recommend Spectra, if you do decide to go with them as well
I'll look Spectra up. Awesome name us oldies would know
Soldato
Anybody considering a Tesla system should verify whether its a Powerwall 2 or 3, seems to be a lot of changes in the Powerwall 3, bigger inverter 11.5kW, 6 built in MPPT's, that six PV strings up tp a max of 20kW of panels. The liquid cooling/heating seems to have gone though.
Being all combined it will certainly make for a very tidy install, albeit I'm sure expensive.
Being all combined it will certainly make for a very tidy install, albeit I'm sure expensive.