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

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A huawei inverter shouldn’t cost an extra grand in the first place. A 6kw huawei hybrid costs 1100 plus VAT at either 10% of your an installer or 23% for everyone else.

Well the Zappi charger itself is nearly €900 so at least with the grant i am getting 600 back. I will have an electrician doing some work on my place in a few weeks and he said he would fit the charger as long as i supply it. What i can not understand is how the cheapest company is charging me 900 including vat for the car charger and fitting and its the same model Zappi 7kW when i can not find it anywhere for much less than 900. How the heck are they making any money from that? Its a separate quote too than the PV panels so its not like they are marking it down as they are making more money from the PV panels.

Yeah the higher quote i got they are saying the same that their stuff is better and he also said the app for the Huawei inverter is the best. I have a few huawei things so know their apps are usually half decent but not sure what i would ever even need the app for since its just converting power to be stored in a battery. If it means only Huawei batteries then ill forgot about that or ask him for another inverter.

App for the Huawei inverter is grand, does all you need. But it's not 'the best' whatever the fe3k that waffle means :) I use the login on a browser as easier to read on the computer screen. It's basically a read-only view as you aren't changing inverter configuration. Won't let you export data (need an installer account for that / one with more rights). But can see what you need.

I'm considering running with this quote but wondering if worth adding a 2nd 5.1 dyness for €2.5k? Seems a lot so wondering would it be better to leave and add later DIY if prices came down. Any issues with adding a dyness DIY?

Create your own installer account on fusion solar portal and request the installer to migrate your “plant” into your account. It’s none of their business accessing your data or controlling access to your equipment once they have completed the install.

Well you need to be careful that you don’t end up charging your cat with the energy you have stored in your battery.

You’re there or there about with the 10kWh for winter daytime. On a bad day you might generate 1kW; on a good day you might generate around 8, so it all depends.

im assuming your on some favourable day / night rate at the moment from the way your taking. Just be careful as that isn’t gonna last forever for you. You will eventually end up on a smart meter with a relatively short window of night time cheep electricity so I would plan with that in mind.

when you throw a heat pump and EV into the mix even a well sized solar array like what your planning seems to be tiny.

I assume the car is always away from home during the day?

Hi all. I have 3 quotes I'd appreciate some advice on :)

10 x Denim Glass to Glass, Mono Crystalline 400w PV Module (with 35 year warranty)

1 x SolarEdge Inverter (with 12 years warranty)

10 x SolarEdge S440 Power Optimiser (with Arc protection & 25 years warranty)

1 x SolarEdge 10kWh Battery

1 x SolarEdge Import / Export meter

1 x Wi-Fi Kit and Free Monitoring Portal for Life

€19,200 after SEAI Grant

10 x Denim Glass to Glass, Mono Crystalline 400w PV Module (with 35 year warranty)

• 1 x Huawei 5kW Hybrid Inverter (with 12 years warranty)

• 1 x 5kW HV Li-ion Battery (with 10 years warranty)

• 1 x Huawei Import / Export meter

• 1 x Wi-Fi Kit and Free Monitoring Portal for Life

€12,700 after grant

13 x Jinko 415 Watt panels

1 Huawei 5kwh battery

3 kW Huawei Inverter

€14,220 after grant

Do you have significant shading issues; are they putting panels pointing in multiple directions? You would be getting a class setup with quote one; but it’s clearly expensive. You will get panel level data about your system; and the battery has great performance in terms of discharge rates (up to 7kwh for short periods of time). Ask for them to specify the capacity of the inverter.

By the looks of it the second quote is from the same supplier? And I note they have not specified the huawei optimisers; so I assume they are not needed on this install. Get them to give you a price for a 10kWh battery. The huawei battery expands in 5kWh modules. So you can expand it easy in the future if you leave enough space. The main difference between the SolarEdge price and this will be that the SolarEdge requires each panel to have an optimiser; where as with huawei it’s optional. Get the price for 10kWh and then at least your comparing like for like. Your discharge rate from the huawei will suffer if you only have a single 5kWh module. Just fyi.

3rd one seems like a different supplier? If they can fit more panels on i’d also be asking quote 1 and 2 to match that number of panels; you want to max you your roof if possible / what you can afford. But they are matching a 3KW inverter with 5.4 kWh of panels; so prob best to avoid them as they seem a bit stupid. For the minor cost increase of going from 3kwh to at least a 5kW or 6kw (you might as well max out your allowance). Your discharge rate would be limited to 3kwh here; which is a major limitation. I’d ask them to up the quote to a 10kWh battery and a 5kW inverter. And then you can compare like for like.

Already on smart meter and charge as much as I can between 2 and 4am.. at 10 cents kWh and 20 for the rest..

Prob just configure the battery to “charge from grid” during the times you know you’re gonna be charging the EV. That way the battery will be trying to charge / hold it’s charge. This works in winter…

In summer when you would typically be wanting to discharge the battery at night maybe it’s ok to dump it all into the car; but maintain enough to cover yourself for the morning breakfast peak incase it’s cloudy.

these are very much 1st world problems :)

On the zappi i set export margin to 100 watts to avoid using the battery for charging car..

100W doesn't do it for me, I'm testing 200W at the moment, just waiting for suitable changeable weather to see! do you leave MGL on the Zappi on 100%, it shouldn't matter but this is the Zappi we're talking about, a WIP product (sometimes I feel like a beta tester!)

Solis RHI-5G, 2 x 2.4 Pylontech, with Eddi v1 (master) and Zappi v2... so if I put Zappi as Priority 1 and Eddi as Priority 2, and Zappi ECO+ MGL on 80% for example, when the Zappi clicks in when there's the required surplus (>1120w), it doesn't seem to respect the 80% MGL when the surplus goes back down (<1120w), it then pulls from the battery up to 1.4kw. I thought setting Export Margin would prevent this but from reading the ME forums, it seems it may be a bug (others are complaining on there). it works fine when Eddi is P1.

Sequence of events:

1. Sun comes out. And your pushing 1121w to the grid.
2. Zappi clicks in and is charging car with 1121w from solar and 279w from grid.
3. battery sees 279w coming from grid and attempts to balance it.
4. sun goes behind cloud you are no longer generating an excess.
5. battery responds to the fact that you now need 1121w and balances this; but imperfectly; so you are still exporting a bit.
6.