Second opinion on PV/Battery quote

RisingSun86

Hi

Having nearly been sold on a £12.2k 4kw system with a 4.8kw battery from Project Solar, this forum helped me to identify that I was being ripped off. 

Having now had what I would consider a really competitive quote compared to others could I ask if anyone has a second opinion or can critique in any way?

We did get quotes for Solar Edge but decided not to splurge the extra £3k. Our only shading is late afternoon from trees 50 metres away. I’m told that as long as they’re over 10 metres away the effect isn’t drastic. 

Size of system 4kh. With battery storage

Equipment;

10 x 400w Hyundai Solar black panels, 25 year warranty to 86.2% efficiency 

  1 x Growatt SPH4000  Hybrid inverter and AC/DC Battery storage management system 10 year product warranty

  1 x Growatt GBL16532 6.5kh of battery storage 10 year warranty.

  1 x Solar I Boost water heater

  1 x Bird protection

  1 x Emergency power back up supply 

  1 x Grid trading option

  1 x All cable run’s isolators and fitting’s 

  1 x Micro generation meter

  1 x System Wi Fi monitor  

  1 x System registration

  1 x Access Equipment

  1 x MCS and G98 Certificates 

 All service and maintenance under the terms of the warranty. 

Fully fitted price of £7,920.00 This price includes 0% Vat. No extra’s. 

Thank you all ever so much for any insight. I’d be happy to answer any questions. This is on 2 roofs, one is South and slightly to the East. The other is East and slightly to the North. 

ggmf

Very similar to my setup, orientations and costs. I'm without the iBoost, but have Tigo optimisers and cloud. How do they propose to install the panels across the roof space, 5 & 5, 6 & 4, other?

RisingSun86

They proposed 5 and 5 so an equal split. Space is somewhat of an issue, they don’t believe any more will fit but are coming out to do a survey to confirm. 

ggmf

Despite limited shading, I'd still look at Tigo TS4-O's and cloud, say TS4-O's are around £40 each plus cloud for £200'ish.

Added advantage is reporting, you can quickly see if you have a panel problem. The Growatt will be able to show if you have a problem with a string but not which panel(s). I'm sure somebody will be along shortly advising that you stay clear of Growattt and anything Chinese. Early days and I've not had a problem with the Growatt  inverter or battery, the Growatt reporting is a bit pants though.

RisingSun86

Thank you. I shall definitely look into it. 

What does that replace within my setup? Would I no longer need the Growatt inverter if I had those Tigonoptimisers? Are there any downsides?

gefnew

Have a read here.
TS4 Flex MLPE | Tigo Energy

ggmf

You still need the inverter, the optimisers sit under the panels, try these vids:  https://www.youtube.com/watch?v=yJl1uch9Yjo&t=77s https://www.youtube.com/watch?v=c9fNUgcdkyU

RisingSun86

I love the look of this. For £600 this seems like a no brainer? Depending how much fitting costs would add, if anything. 

Am I missing anything here?

gefnew

You can fit them to the panels that only get shading and not  the ones that will not.
They fit on the underside of the panels and are wired in series with the next panels.

RisingSun86

Ok. As I mentioned I am not going to be prone to shading as being an issue. I also see this as an additional expense if the optimiser itself fails in future. 

Glad to hear my setup overall is sounding reasonable!

Thanks for all the thoughts so far. 

We may consider adding another battery at £1800 to take advantage of the vat saving at this stage rather than being stung for it by trying to retro fit later. 

Solarchaser

ggmf said:

Despite limited shading, I'd still look at Tigo TS4-O's and cloud, say TS4-O's are around £40 each plus cloud for £200'ish.

Added advantage is reporting, you can quickly see if you have a panel problem. The Growatt will be able to show if you have a problem with a string but not which panel(s). I'm sure somebody will be along shortly advising that you stay clear of Growattt and anything Chinese. Early days and I've not had a problem with the Growatt  inverter or battery, the Growatt reporting is a bit pants though.

As advised, I'm along to tell you to avoid growatt, not Chinese inverters encompassing all.
I have lux Chinese inverters and they are good.
I've had growatt, id avoid growatt.