I have decided GoodWe (5kw) & Risen Mono panels with 6.3kw system, 14 facing North and 6 East.
Now remaining part is between 315w panels and 330w. ( My usage is about 5kw daily)
330 panels cost $300 more. Can someone guide me please ?
Is it really worth spending extra for that ?
Is It Worth to Spend Extra $300 on 330 W Solar Panels Rather than 315 W
ppp13 on 24/10/2019 - 15:02
Last edited 24/10/2019 - 16:24 by 1 other user
Last edited 24/10/2019 - 16:24 by 1 other user
Comments
But 330w are more advanced than 315 so efficiency and performance is little more high I expect?
And I can reduce a single or two E facing panels. But I don’t think installer reduce any price.If installer doesn't reduce price then I would leave it at 315W. Even if 330 is higher efficiency the amount of solar panels you have will ensure you produce at least 6kW but all is limited by your 5kW inverter. I would use $300 to treat myself and more $$$ savings with your new solar panels.
I installed solar in my house even if my consumption is low (2-3kW/day) and see a remarkable reduction in my power bills. Also don't be too obsessed with checking daily generation if you can see it through mobile app (if inverter allows it)
It's limited to 5kw, but your increased generation means you get to 5Kw faster and for longer. It'll generate approx an extra 1.2kW of energy per day, but I'd probably discount that by 50% due to the limiting. So, it's kinda meh.
You would be better off putting that $300 into something else IMO. Your low consumption will be easily met by production on a 6.3kw system I expect - so any excess will be fed in if it not clipped in peak by a 5kw inverter. I doubt you'd get your money back from the higher spend - and my installers offered something similar but recommended against it too.
Works out to be $0.95/w so if that is less than base cost go for it
Can you please elaborate? I didn’t get what you say.
If I change to 330w, may be 1 or 2 panels can be removed from E side. So overall system still 6.2 approx.
NVM your system should be 6.615kW as 21 x 0.315
Currently (14 N + 6 E) 20.315 = 6.3 kw
With 330w, may be (14 N + 5E) 19330= 6.270 kw@ppp13: Can you fit 21 panels if so 21.315=6.615
if not see if they do 325 or 320 panels and get 20 of those.@User2049: 21 no chance and don’t want too because they will go E side. Yea I can ask 325/320 ( good idea thanks) but if they charge more is it worth?
@ppp13: 6E would be the minimum on that string for it to operate efficiently
If you get 20 panels it will be 13N & 6E or possibly more on the E string, check the inverter and panel specs it may require more than 6 on that string
For 22 panels, all up the difference is only 330W for an extra $300? I don't think it's worth it unless the panels are a better make.
You've got more than enough panels and the bottleneck will just be your inverter. I say stick to the 315W