Domestic Solar PV Quotes 2022 - No PM requests - See Mod note post #1

I'm definitely in the "get a battery camp" as I have seen the advantages of it.

For example, backup power during a power cut, using the night rate to charge the battery during the winter months for discharge during the day.

~10 year payback with the current electricity prices. Could be as low as 7-8 years or as much as 12 years .... depending on your usage, how much you paid, did you go DIY battery etc. Higher spec installations tend to payback quicker. That said electricity prices are and have generally been climbing for at least the last decade, so you can probably drop 10% off the payback time if you factor in future prices.

Prices | Energy Statistics In Ireland | SEAI

Maybe solar isn't for you if a 7-8 year payback isn't your thing. Only you can decide. That said, there are other reasons to adopt solar than strictly payback timelines. Battery usually goes into the attic for most people. I've a converted attic and it goes into a little storage closet I had - but you can store many of them outside too. They are IP65 rated. Generally there are solutions to most issues. Not always, but it's rare that you are the first person to have a problem that the suppliers haven't seen before.

I think you're over thinking/worrying about the temp for the battery. They tolerate cold pretty well (better than before) and the attic for me is usually a few degrees warmer than outside. I've a temp sensor outside at my front door which is reading 6.9C right now and the one in the attic is 9.6C (unheated part of the eves) and the heating isn't on in the house. Looking at the specs for my own GivEnergy one

Bat8.2 (givenergy.co.uk)

Operating range -10C to 55C. Yeah, it can get toasty in an attic in the summer when the sun is beating down on the tiles, but 55C? Doubtful I think. Maybe 40-45C on a hot day....and at that, all the (decent) ones have temperature sensors to cutoff in over/under temperature issues to protect the battery. Here's the battery's internal temp sensor today in that room which is currently 9.6C

or put it outside on the wall, most of them support that. e.g

THE EASIEST HOME BATTERY TO INSTALL! || Puredrive Energy Purestorage 2 AC 10 - YouTube

Again, can't see your house being much different to the rest of the regulars on here and we all have working trouble-free systems with the same environmental issues (weather) as you have.

Very easy to insulate batteries in the winter. Shouldn't be overly difficult to cool them in summer either although they are happy to sit at pretty high temps.

Pretty sure that's the Enniskillen lads going by the spec. It's a bit on the high side, but not extortionate.

4.8kwp system, allow about €5k

5kWh battery, allow €2k

Eddi, allow €500

So you'd hope to get that for €7.5k rather than €8.5k. However prices in general are increasing, particularly with PylonTech battery stock hard to find.

No harm in going back to haggle, maybe get it down to €8k. They're packed out with work though so don't hold your breath. But if you don't ask, you don't get!

Thanks, you are correct and maybe there is some leeway

Some details in the spreadsheet.

Solar Performance Spreadsheet - Analysis and data sharing - Page 2 — boards.ie - Now Ye're Talkin'

Well SAAS finally got back to me 20th December and arrived today to fit.

Actual Install was fast and easy although they couldnt get the Goodwe Homekit/app working but I told them not to worry and I got it working myself, I might send them over details of what I did as the way it shows in the manual would not work, not sure if it's a firmware issue or what but I have it working now

Hi all, will list some quotes here. Appreciate your thoughts please:

Quote 1

6.75 Kw Panels (375 watt, JA Solar)

Hybrid Inverter Solis RHI-3.6K-48ES-5G (v1)

Battery 4.8 Kw (2 * 2.4 Kw Pylontech)

€12,200 Including VAT, before

€3,000 grant

€9,200 Total

Quote 2

7.2 Kw Panels (360 watt, Recom)

Hybrid Inverter Solis 6Kw

Battery 5 Kw Pure drive

€13,352.00 Including VAT, before

€3,000 grant

€10,352.00 Total

Quote 3

7.9 Kw Panels (375 watt, QCells)

Hybrid Inverter Solis 6Kw

Battery 5 Kw Pure drive

€14,650.00 Including VAT, before

€3,000 grant

€11,650.00 Total

Quote 4

7 Kw Panels (Jinko/Leapton)

Hybrid Inverter Solis 5Kw

Battery 4.8 Kw (2 * 2.4 Kw Pylontech)

€13,100.00 Including VAT, before

€3,000 grant

€10,100.00 Total

Quote 5

7.4 Kw Panels (370 watt, JA Solar)

Hybrid Inverter GivEnergy 5Kw

Battery 5.2 Kw GivEnergy)

€13,919.00 Including VAT, before

€3,000 grant

€10,919.00 Total

Quote 6

7.2 Kw Panels (390 watt, Recom)

Hybrid Inverter Solis 6 Kw

Battery 4.8 Kw (2 * 2.4 Kw Pylontech)

€13,575.00 Including VAT, before

€3,000 grant

€10,575.00 Total

Quote 7

6.12 Kw Panels (375 watt, Longi)

Hybrid Inverter SE5000

Battery 5 Kw Pure drive

€12,150.00 Including VAT, before

€3,000 grant

€9,150.00 Total

Quote 8

9 Kw Panels (450 watt, JA Solar)

Hybrid Inverter Solis 6Kw

Battery 5 Kw Pure drive

€13,050.00 Including VAT, before

€3,000 grant

€10,050.00 Total

Thanks, consumption last year was 7,800. That's with no EV or heat pump which we may get in next 2-3 years. So was thinking ahead really. Plus both of us WFH which will continue after pandemic.

I would go with quote 8 and double the size of the battery to 10kw.

Thats my moto. Now with that final spec set, see who can beat it. Keep the spec the same.

Hi guys,

Got 3 more quotes they differ in the price but they have one thing in common, due to lack of the space on the roof maximum they could offer me is 2.8 kWh 🙄 I'm thinking if there is any point of getting the PV panels at all as the cost reimbursement probably will be 10-14 years. My usage currently is around 4000 units annually. The idea of getting bigger battery is that during the winter I could avail of the night rate tariff to capture the cheaper energy to use it next day.

Quote 1:

• 7 x 370W JA Solar PV Panels (2.59kW)
• 1 x 3.6kW GivEnergy Hybrid Inverter
• 1 x 5.2kWh GivEnergy Battery Storage
• 1 x EDDI power Diverter Smart Immersion
• Full Installation & Commissioning of System

     =   €9,136.75 incl. VAT

Minus the grant worth €2,577 means you pay €6,559.75

Quote 2:

7 x 400W panels 2.8 kWh

Eddi

• BPE Battery Pack 4.8kWh 

• BPE Inverter

• Fireman switch as per regulation

10824e -3000 grant= 7824 euro

Quote 3:

• 2.190 kwp system.
• 365w all black Longi panels.
• Hybrid Inverter with
• 5.2 kwh Battery
• Power Diverter to heat the water in the Hot water cylinder via an emersion.
• Fireman switch (needed to achieve grant standards)
• Post works BER Cert

8400 euro after grant.

They are ott value can be found. Don't give up.

Leaving aside the quotes (which the lads have already commented on), I'd go back a sec and look at your system. I'd probably ditch the EDDI. The logic is, that with the relatively low number of panels that you have, you simply won't have enough surplus over your base load to

a) fill your battery completely to then

b) utilize the EDDI to heat the hot water.

So effectively for all but the longest/brightest days of the year the EDDI will sit idle in your hot press, or wherever you decide to install it. Pretty much a waste of €500.

When you say "lack of space on the roof", have you looked at all options here? Even north('ish) facing panels can work, assuming that the slope of the roof isn't too steep. Also, if you have a shed or extension, you might be able to get 2-3 panels on that.