Solar & storage system - £23,200

[BGARK]

Hello, we have been quoted - £23,200 for a solar system.

14.2 kW of cells

19.2 kW of battery storage

All controllers and ancillaries.

This might be a good or bad price, I have no idea, is there anyone that would cast their eyes over the quote for a large beer?

Thanks.

[jodypress]

It sounds a pretty good price.

I've been quoted £17,500 for a 10 kWp Solar PV array using 22 x 455w JA Solar Panels together with a 13.5 kWh Tesla Powerwall Battery Storage System.

I thought that was pretty good as I'd had a quote for a 6kw system with a 6kw battery for £15k and a £23k for a 8kw system with the Tesla battery.

[mrmistoffelees]

BGARK said:

Hello, we have been quoted - £23,200 for a solar system.

14.2 kW of cells

19.2 kW of battery storage

I can't see how they're making a profit on that... 38x 380W LG panels comes in at about 13 grand, 20kw of battery storage would be about 10 grand.

Ignoring the "Jesus that's a huge installation" and so on.

[BGARK]

Thanks guys, much appreciated.

[AW10]

There was an effort in W Sussex to organise a “group buy” through some of the local councils - here’s the pricing that was published https://ichoosr-cms.azureedge.net/content/2021/10/...

[Lily the Pink]

I have a quote for 35 x 365 panels (so just under 13kWp), 2 inverters, installation etc. for £10,500 inc VAT. I'm going to see how it all hangs together for a year or so before deciding on whether to go for a battery - which I expect to drop in price while the grid price rises.

Edited to add that on another quote a 8.2kWh battery was costed at £3500.

Edited by Lily the Pink on Wednesday 24th November 21:44

[Terminator X]

How much would you save per year so how long would it take to "pay it off"?

TX.

[gazapc]

BGARK said:

Hello, we have been quoted - £23,200 for a solar system.

14.2 kW of cells

19.2 kW of battery storage

All controllers and ancillaries.

This might be a good or bad price, I have no idea, is there anyone that would cast their eyes over the quote for a large beer?

Thanks.

Obvious question but where would this system be located and why so big? For a domestic install that is a massive system as most solar systems you see when driving around are in the 2-4kw range.

During the middle of summer a 14 kW pv system will be pushing out more than 60 kWh on decent days. That is a lot of energy to either use, store or export.

I'm assuming it must be located on a powerfully built company director's house or perhaps a commercial premises, hence the larger demand.

[Andeh1]

Don't bother with Batteries, you'll never even come close to paying them off. If you must spend money, go for an oversized hot water tank & find a solar diverter to dump the unused summer power into it. Still not a bullet proof payback!

[joestifff]

Am I right in thinking that although you don't really need the Tesla battery, having it allows you to be on a special tariff, which I was told a couple of months ago meant you bought at 11p kwh?

[BGARK]

Andeh1 said:

Don't bother with Batteries, you'll never even come close to paying them off. If you must spend money, go for an oversized hot water tank & find a solar diverter to dump the unused summer power into it. Still not a bullet proof payback!

We were thinking of both, the iboost control system to heat the hot water cylinders.

Batteries are useful when also combined with charging electric vehicles or out of hours power needs. But I agree it's a compromise with the cost.

[TDK-C60]

BGARK said:

Hello, we have been quoted - £23,200 for a solar system.

14.2 kW of cells

19.2 kW of battery storage

All controllers and ancillaries.

This might be a good or bad price, I have no idea, is there anyone that would cast their eyes over the quote for a large beer?

Thanks.

Sounds interesting. I'm thinking "going quite big" could be an interesting option as energy prices look set to rise.

What are your overall needs - are you looking for reasonable winter kW and hence options to reduce CH costs?

[biggiles]

BGARK said:

Andeh1 said:

Don't bother with Batteries, you'll never even come close to paying them off. If you must spend money, go for an oversized hot water tank & find a solar diverter to dump the unused summer power into it. Still not a bullet proof payback!

We were thinking of both, the iboost control system to heat the hot water cylinders.

Batteries are useful when also combined with charging electric vehicles or out of hours power needs. But I agree it's a compromise with the cost.

14.2 kw of panels is far more than you'd usually put on domestic - either you have specific needs (and are willing to put in the additional DNO paperwork) or your salesman is over-committing the panels significantly into a normal 3.68kw (or a 11.04kw 3-phase) inverter, so that you have some noticeable solar PV in the winter? Source for inverter sizes: https://blog.spiritenergy.co.uk/homeowner/how-many...

If cost isn't an issue, go for it, but if you're trying to be vaguely cost-effective then batteries usually are not. If you want to store energy, put in a bigger water tank. You can store a *lot* more energy in a £10k water tank than you can in a £10k battery. There's no point trying to go "off-grid".

[MrJuice]

what features would a 10k water tank have? just sheer volume?

If so, what volume are we talking?

any specific tanks you'd suggest?

[BGARK]

Slightly off-topic, but before we go ahead I want to accurately measure power consumption live and over time.

So far this is the only gadget I have come across that will do that accurately: https://sense.com/product

If there are any other devices like this it would be good to know?


Edit to add... they don't sell this in Europe.

Edited by BGARK on Tuesday 30th November 14:23