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

After months of lurking here I'm finally in a position to start requesting quotes. My roof is East/West and typical semi-d. I have an EV and will be getting a Zappi installed as part of a rewire.

Company 3 which comes highly recommended here and looks like a clear winner. If I assume 3,300 for the eddi and battery, the price per kW on the panels is 1,250€ which is close enough to the 1,200€ guide given the state of things at the moment.

Is there anything I should be looking to query on that one?

Company 1: 9,860 after grant

- PV Modules: 10 No. 380 Watt Solar PV Panels. 1769mm x 1052mm

- Solis Hybrid Inverter: Single phase, Dual string with Irish configuration

2.4kWh Battery Storage.

- Power Diverter. Diverts all excess energy towards your immersion heater.

- Wifi Remote Monitoring.

- Pitched roof mounting kit incl. retrofit kit, bracketing, clamps and remaining materials. - MC4 Connectors, male & female

- 2-Pole DC Isolator switch - IP66/67

- 4-Pole AC Isolator switch - IP6/67

- Operation & Maintenance Manual Provided

- Fully installed & commissioned by a Safe Electric registered electrician.

Company 2: This was a generic mail received in reply to the request with sample prices

4.8kWp (12X400W) with 2.4kWh  storage with MYEnergi EDDI water diverter

Cost including VAT is. €13294

Grant applied from SEAI €2400

Final Cost €10894

or

6kWp (15X400W)  PV system with 4.8kWh battery storage and MyEnergi EDDI water diverter

Cost including VAT is approx. €15124

Grant applied from SEAI €2400

Final Cost €12724

Company 3: 10,100€ after grant

Modules- 340w JA Mono panels with 30- year efficiency warranty and 25-year manufacturer’s warranty

16x 340w JA panels Monocrystalline = 5.4kwp system

Battery Dyness 5.1kwh battery

Inverter –RHI-5K-48ES Solis hybrid MPPT comes with 5-year warranty

Mounting Kit- Renosol roof mount Check Meter- Emlite M19

Solar Switch- for heating hot water through the solar panels with surplus power

1x Solis hybrid inverter plus WIFI dongle

All Required 1 x Check meter

As required 1x DC isolators

1x AC isolator

1x Shut of switch

Eddi water diverter

The previous post to yours should give you your answer on that :(

An Eddi grabs power going to the grid and diverts it into an immersion

You can configure the settings but generally an Eddi will divert surplus energy to your immersion until it hits a set temperature. After that any further surplus goes to the grid

Similarly, if the Eddi is turned off, the power just exports. An Eddi grabs the excess if it sees it and if it can use it

Hi

We're currently in the middle of a new build, (blocklaying stage), and I'm thinking about potentially putting in a Solar PV system.

But seeing the quotes here, and the fact we won't get a grant....I'm not sure it would financially make any sense.

With the grants now applying for homes built and occupied before 2021 (for heat pumps and renewable systems) - I'm thinking in a few years this could be updated and maybe we will meet the criteria and at that point we could pull the trigger.

Just wondering what are others opinions, or if anyone else is in a similar position.

Heat pump heats the water in summer, all 500 litres of it🙈

So ironically heat pumps are actually more efficient in summer when it's hot outside. You can expect a COP of perhaps 4 to 1 in summer. More even, but let's go with 4 to 1.

hot water heater energy calculator : consumption of electricity, gas (power-calculation.com)

Heating 500L of water from 15C -> 60C takes 32Kwhr of energy. With a COP of 4 to 1, that would mean that you'd need to import from the grid 8Kwhr of leccie. Ok, before someone says it I know Heat pumps struggle to get to 60C, but I'm ballparking.

Seems that heating the water should be in the region of 10Kwhr....maybe 12kwhr at a push. If your using 60Kwhr as you say, something seems "off" there.

Now that you have your solar install, post up your load for 24 hrs. I'm sure people could suggest what's astray from the energy consumption profile.

Note: Probably more a Tips & troubleshooting topic than a quotes issue, but I'm pretty confident you can solve your problem and save 100's of €€€

I know this is the quotes thread, but its been spoken about before here and i cant find it. All the talk of cutting off the electricity, how do you utilise having solar panels. Did someone say there is an extra piece you can buy which would let you use your stored power in case of an outage? Is another battery required?

Any knowledge appreciated

Why can't the power run directly from the battery?

Another day another load of energy used and the heating isn't on at all, at least i used nearly all the 20kwh of solar generated

I'm also getting a better handle on usage

Heat pump heating the water is probably overworking as the cylinder doesn't seem that well insulated, I am assuming the really big spikes are down to the heat pump

I've a well for water too and the pump seems to draw a fair bit of energy , I'll be turning switches in the fuse box on and off next to see where the other usage is coming from

I'm still seeing a 'run rate' of 0.7 kwh to 0.9kwh a lot which corresponds to all the electric crap account for about 15kwh or a bit more a day