Solar panels and battery - any real world reccomendations?

I have a quote through as below. Any alarm bells on this? They seemed decent and have good reviews, fwiw. There are 2 railing systems as the panels are sitting in 2 parts of the roof.

13 PERLIGHT 400W DELTA SERIES

1 EM-LITE EMLM20

1 K2 RAILING SYSTEM

1 K2 RAILING SYSTEM

1 SOLAX X1-HYBRID-5.0T

1 SOLAX T-BAT H 5.8

Total: 11,550.00

Thanks.
 
FNG said:
I have a quote through as below. Any alarm bells on this?
Click to expand...

5.2kWp, 5.8kWh battery and 5kW inverter, for £11k, seems a bit high but not like some I've seen recently. Have you have a price breakdown showing the costs of parts/labour/scaffold/G99-Admin etc?
 
£4500 for battery, £800 for scaffolding and the rest for supply, install and commissioning. I have had other quotes, all more than this. I think prices are just high atm!
 
FNG said:
£4500 for battery, £800 for scaffolding and the rest for supply, install and commissioning. I have had other quotes, all more than this. I think prices are just high atm!
Click to expand...

£4.5k with zero rated VAT for a 5.8kWh battery is robbery. You could just get them to fit the rest of the system including the hybrid inverter, then buy the battery and have it connected up for a lot less. In fact for £4.5k you could buy a 5.8kWh master battery and a slave, and still have change inc. VAT!
 
HungryHippos said:
Why 2 inverters and 1 battery here?

What is your yearly usage like?

You could go onto Octopus Go instead for cheaper overnight rates, and also potentially use the cheaper electric to power heat pump for a bit for less. Can't get onto Agile outgoing with it though.

Battery capacity seems a little low for that system, unless you have a high constant draw, a 6kw system will be filling that in no time in summer. Did you mean 2 batteries and 1 inverter?
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Hi HungryHippos, I did indeed mean 2 batteries and 1 inverter. 2 strings of 8 panels.
Last year's data is not relevant because we didn't have the ASHP until March this year, but we're estimating around 6800. We can't limit the ASHP to running at night, it has to be allowed to run whenever it needs using the weather compensation algorithm. I think that trying to override the programming would make it less effective/efficient.
Can't get onto Agile outgoing with which, an ASHP? From Octopus: "Agile is perfect for people with electric cars, heat pumps, home batteries and any other big energy-intensive appliances." Octopus Go seems to require an electric car, which we don't have. I'm going to have to give them a call it seems :)
We also suspect that even 10.4kW storage might not be enough, but we can add more later.
 
Just had our 15kw G99 Export request approved by UKPN (in about 2 weeks which was slightly surprising!). Based on the suggestions here though we're pausing the order for the SolarEdge/Tesla and looking at the Victron options (but based on our 15kw G99 Export limit now!).
 
dangermousie said:
Hi HungryHippos, I did indeed mean 2 batteries and 1 inverter. 2 strings of 8 panels.
Last year's data is not relevant because we didn't have the ASHP until March this year, but we're estimating around 6800. We can't limit the ASHP to running at night, it has to be allowed to run whenever it needs using the weather compensation algorithm. I think that trying to override the programming would make it less effective/efficient.
Can't get onto Agile outgoing with which, an ASHP? From Octopus: "Agile is perfect for people with electric cars, heat pumps, home batteries and any other big energy-intensive appliances." Octopus Go seems to require an electric car, which we don't have. I'm going to have to give them a call it seems :)
We also suspect that even 10.4kW storage might not be enough, but we can add more later.
Click to expand...

You can switch to Go online, they just have a checkbox for the EV but don't seem to check in more detail, at least currently. I wouldn't bring this up in conversation with them necessarily. Or if you do just say you're getting one and exploring options.

Just switch to the standard tariff for now with them, then you can either go onto Agile or Go afterwards. Both of which you can sign up for online once you're setup.

Agile Outgoing is not the same as Agile Import, it's a smart export tariff that you can't mix with Go import.
 
dangermousie said:
Hi! I have also been lurking ;) This is a great thread!

We have agreed to £14K for the following...

Quote:
16 x Perlight Delta 400W Total Black Mono solar panel
1 x G2 GivEnergy 5kW Hybrid inverter
2 x G2 GivEnergy 5.2kWh LiFePO4 Battery
Full installation & Mounting Kits
Installation, Commissioning & Handover
G98 or G99 Application to DNO
MCS Certification
Project Management
*Scaffolding Included*
No bird protection because "the panels are closer to the roof"

Positives:
GivEnergy is compatible with the Agile Octopus tarriff that keeps us off the grid during peak times
Islanding
My neighbours used these guys and are happy, fwiw.

Complications:
Our fixed rate ends in January and no other responders are available before then.
Others were quoting £18-20K+ (albeit for totally different solutions, including waiting a year for Tesla).
We have an ASHP for water and heating. We only got it in March, so we don't know how greedy it actually is over winter but it will be a whole lot.

Are there any alarm bells ringing in this scenario? Thanks!
Edit: corrected GivEnergy quantities, added that there is no bird protection
Click to expand...
I have also been lurking and watching this thread, started getting some quotes in but to me its feeling like the wild-west depending on what company you engage with and what time they have to engage back to potential new customer (understand demand right now), some want you to practically climb onto your roof to measure to the cm/inch, some will do what they need to via Google-Earth, some will just flat-out refuse to engage saying demand is too high and they are not interested at engaging at all.

Your quote for instance looks similar to a cost i received last week (£13.5k), however you have double the panels, as i was only offered 8 (385w) panels along with a 3kwh Battery and a 3.6kwh Inverter, seems your deal is coming out good when i read what i was offered with one proposal so wanted to feedback to give you a comparison, i show/advise my yearly usage around 6500kwh and need for a battery and solar, so in that quote comparing to yours, my quote is really high with less kit/production compared to yours.

I guess this is the issue with demand for solar/battery install's, but i also understand that one-size-fits-all is not an option either with so many variants to take into account, challenging but my £13.5k cost for 8 panels/battery compared to £14k for 16/battery panels shows how wild these quotes can be, perhaps me thinking "keep it local" may not be fruitful in this case and perhaps a national uk company would be better ?
 
Makes a change, up this far north its generally the other way around. 16kWh so far and a tank heated just after 2pm.
 
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