Solar PV + battery quote - seems high

Ergates

We've had a company give us a quote for installing panels + a battery.  It's a large system (we have electric under-floor heating which eats electricity), but even taking that into consideration, the quote seems markedly higher than others I've seen on here

It's:
25 x 400W panels (10kW in total)
5kWh battery
Inverter
Tigo system
bird proofing

The quote is coming in at £20500.

Obviously quotes come in a range, but is that reasonable?  Or are the taking the Michael?

I believe part of the cost is the Tigo system (around £150 per panel) as our panels will be spread over different parts of the roof so will be better different levels of sunlight.

arty688

Its hard to say these days my system which is being installed in July but quoted for in March is.

20 x 400w panels
solaredge optimisers
10kwh solaredge battery
bird proofing
Spread over 6 roofs so lots of scaffolding

came in at £14k

The installer did say prices were going up all the time and the battery alone had gone up by £1.3K after I ordered. Add to that labour prices and demand etc.. I wouldn't be surprised if you quote was the going rate. 

QrizB

Yes that's quite a lot.

The PV system (without battery) should be under £10k but current shortages in supply and installers have bumped that up. Let's be generous and say £12k.

Plus 25 optimisers at £150 each is another £3750. (Although they're only £42.90 each retail? Maybe a question for your installer there?)

Plis a 5kWh battery at say £3k.

Total £18750.

94JDH

Ergates said:

We've had a company give us a quote for installing panels + a battery.  It's a large system (we have electric under-floor heating which eats electricity), but even taking that into consideration, the quote seems markedly higher than others I've seen on here

It's:
25 x 400W panels (10kW in total)
5kWh battery
Inverter
Tigo system
bird proofing

The quote is coming in at £20500.

Obviously quotes come in a range, but is that reasonable?  Or are the taking the Michael?

I believe part of the cost is the Tigo system (around £150 per panel) as our panels will be spread over different parts of the roof so will be better different levels of sunlight.

As others have said, quite high price - I've lost track on the increases since my order was placed at end of March for 14k ( 7.2kW solar, 19kW batteries, two inverters and 18 Tigo optimisers for reference)
One thing, make sure VAT on everything has been excluded.

Edit: my kitchen/diner hall and utility are electric under floor heating and in a 1930's house this makes a significant difference to gas bill when combined with the wood burner for heating.

Alnat1

Are you happy with just 5kWh of battery storage? Seems you will be exporting a lot with all those panels, that battery will be filled pretty early in the day. Someone on here said consider having enough battery for 24 hrs use.

ispookie666

I suspect there will be a lot of additional electrical work needed and two big inverters. 
I presume all these are going on a single roof?
The battery seems awfully small for the size of your system. I wonder if it's a typo from the quote. 

I had paid 16k (contract signed October, installation finished a few days ago!) for 20 panel system(6.6 KWp) with 16.4kw storage, split over four roof along with Enphase microinverters 

1961Nick

Initially that quote looks high - £1.20/Wh for solar + £400/kWh for storage suggests a basic cost of £14K. As others have mentioned, the battery storage is totally inadequate for a 10kWh array. You should be contemplating at least 15kWh with room to expand should that prove to be not enough.

Are they quoting for a Tigo on every panel? My understanding is that these are only needed on panels with potential shading issues?

94JDH

1961Nick said:

Initially that quote looks high - £1.20/Wh for solar + £400/kWh for storage suggests a basic cost of £14K. As others have mentioned, the battery storage is totally inadequate for a 10kWh array. You should be contemplating at least 15kWh with room to expand should that prove to be not enough.

Are they quoting for a Tigo on every panel? My understanding is that these are only needed on panels with potential shading issues?

Agree, although I've gone for the optimisers to also see if I've any faults on individual panels in the future and make it easier to identify.

1961Nick

94JDH said:

1961Nick said:

Initially that quote looks high - £1.20/Wh for solar + £400/kWh for storage suggests a basic cost of £14K. As others have mentioned, the battery storage is totally inadequate for a 10kWh array. You should be contemplating at least 15kWh with room to expand should that prove to be not enough.

Are they quoting for a Tigo on every panel? My understanding is that these are only needed on panels with potential shading issues?

Agree, although I've gone for the optimisers to also see if I've any faults on individual panels in the future and make it easier to identify.

I think they're overcharging you for them. A mark up of 50% would make them about £75 each.

94JDH

1961Nick said:

94JDH said:

1961Nick said:

Initially that quote looks high - £1.20/Wh for solar + £400/kWh for storage suggests a basic cost of £14K. As others have mentioned, the battery storage is totally inadequate for a 10kWh array. You should be contemplating at least 15kWh with room to expand should that prove to be not enough.

Are they quoting for a Tigo on every panel? My understanding is that these are only needed on panels with potential shading issues?

Agree, although I've gone for the optimisers to also see if I've any faults on individual panels in the future and make it easier to identify.

I think they're overcharging you for them. A mark up of 50% would make them about £75 each.

No, I think you're confusing me with the original poster - mine were £32 each

1961Nick

94JDH said:

1961Nick said:

94JDH said:

1961Nick said:

Initially that quote looks high - £1.20/Wh for solar + £400/kWh for storage suggests a basic cost of £14K. As others have mentioned, the battery storage is totally inadequate for a 10kWh array. You should be contemplating at least 15kWh with room to expand should that prove to be not enough.

Are they quoting for a Tigo on every panel? My understanding is that these are only needed on panels with potential shading issues?

Agree, although I've gone for the optimisers to also see if I've any faults on individual panels in the future and make it easier to identify.

I think they're overcharging you for them. A mark up of 50% would make them about £75 each.

No, I think you're confusing me with the original poster - mine were £32 each

That's more like it.