Domestic solar PV quotes 2018

Hi folks, been following this thread for some time. Could someone PM me recommendation(s) for installation of a PV system in Dublin please? I've got some family members looking to pull the trigger on an installation.

KCross wrote: »

Assuming they want to utilise the grant they need to use SEAI registered installers. They are listed on their website
https://www.seai.ie/grants/home-energy-grants/solar-electricity-grant/

They absolutely will need to utilise the grant. Thanks for that. Hopefully the recommendations inbound will also see the installers on the list.

wexfordman2 wrote: »

No,

I have the panels installed, waiting for the inverter and battery install etc.

Spoken to them in Friday and they are waiting for a final checklist from seai before installing in the electrical side.

The delay seems to be comming from seai producing a sign off sheet. They priced a friend of mine recently as well and he was told they are waiting in the same thing.

(He actually went for a 10kwh battery I think, and 6kwp solar)

Hi, Can you pm me supplier you went with?, thnks

Reading this forum carefully . I still have doubts that solar is worth it.

Here is my situation in numbers:

my annual electricity bill is ~€922 (8.3 kW/day).
Solar system 5kW (quote taken from this thread - €5200 after grants)

My calculations are based on following assumptions

electricity consumption stays flat :8.3 kW/day
electricity price inflation a 3%/year

Breaking point is around 8.5 years

for a 6% inflation the breaking point is 7.5 years


but my calculations are missing the real energy generated by a 5kW system so it could be longer before costs are recovered.

unkel wrote: »

You wish. That's if all the electricity you use now will be covered by solar. You'd do very well to replace half of what you are using now...

this calculation is an assumption that I get 60% from solar. but I think 5kw system will give me an average of 30% (here is where I need real data for Ireland)

I hasten to add that I have a large solar thermal setup, my only family car is a full EV and I have just increased my PV setup to a total of almost 4kwp

But we have to be realistic about the figures and not kid ourselves with overly optimistic projections...

What data? Rule of thumb for a 5kwp panel south facing in a decent part of Ireland is that it will generate roughly 5MWh with a daily peak around midday and a yearly peak in the summer

You will have to measure your own consumption data. And make some adjustments for when you can move night time use to daytime use (i.e. put the dishwasher in the middle of the day provided it's not raining / very overcast, etc.)

Fotoman 3.995kW Compare: Tips
Year▼
Generated

Efficiency

North Hampshire
4KW system

Exported
FIT Credit Low High Average
Comments
2019 117.472kWh 0.840kWh/kW 117.472kWh 0.146kWh 11.960kWh 3.356kWh Partial Year (35 days)
2018 3.853MWh 2.643kWh/kW 3.853MWh 0.061kWh 29.110kWh 10.556kWh
2017 3.521MWh 2.415kWh/kW 3.521MWh 0.311kWh 27.880kWh 9.647kWh
2016 3.775MWh 2.582kWh/kW 3.775MWh 0.218kWh 27.380kWh 10.314kWh
2015 3.791MWh 2.600kWh/kW 3.791MWh 0.103kWh 29.420kWh 10.386kWh
2014 3.758MWh 2.577kWh/kW 3.758MWh 0.183kWh 28.200kWh 10.295kWh
2013 3.825MWh 2.841kWh/kW 3.825MWh 0.047kWh 29.721kWh 10.480kWh
2012 3.509MWh 2.400kWh/kW 3.509MWh 0.053kWh 28.150kWh 9.587kWh
2011 406.643kWh 1.049kWh/kW 406.643kWh 0.276kWh 17.880kWh 4.192kWh Partial Year (97 days)

zdragon wrote: »

would you share the datat?
daily generated and daily consumed?

Some of my figures from last year, the system was installed in April.
My wife is at home fulltime with 2 toddlers and I work shift so we probably get to use more during the day than the average family.

My consumption from the grid hasn't decreased that much as the installation of the panels coincided with the arrival of twins! which increased my consumption quite a bit.

I have a 4.2kw PV system with 5kwh battery. Since mid september I've only given away 22kwh to the grid for free.
Summer will be difficult to store/use all. Will probably need to heat water with excess.

Even with above setup i'd expect to have to buy about 1000kw/year from the grid.

I'd love to see net metering or a decent feed in tariff .

KCross wrote: »

Your comment that "4kW panels will generate more than I need" gives the impression that you think it will reduce your bills by that same amount.... you realise the majority of it will go unused because you wont be at home utilising 4kW all day long and during the winter it will be generating close to "nothing".


Maybe you do understand that but just want to make sure you do as that comment makes it look like you don't!

I don't consider a system without battery. spending couple of thousands just to give away free energy, doesn't make sense at all

unkel wrote: »

How the hell did you manage to do that, do you have a very high background load or do you reckon the battery evens it all out?

I wouldn't worry about the few hundred kWh you are likely to give away for free. Do not divert, it will only cost you money. If you don't mind me asking, what was your annual consumption in kWh before your system?

I've a 4kwp system up and running since last weekend, next phase for me is maybe a battery...

Battery definitely evens out things but in Summer I'll definitely end up giving away a lot of it even with the battery. I don't think I'll buy a diverter. Not sure if it would see the battery as generation and drain it too much. Will just flick on the immersion when I'm home if nothing else is consuming it.

I also put my appliances on delayed start . Washing machine, dryer and dishwasher set to come on at different times helps make the most of the daylight.

My consumption was about 3200kw/year but I have an electric car now and two daughters that will use a lot in the future.

wexfordman2 wrote: »

Turning the immersion on or off based on your pv producing excess won't be the most effective way if doing it. Say the element in your immersion is 3kw, that means if you are generating 1kw excess, you turn on your immersion, and now you are 2kw down.

My understanding of the way the diverters work, is that they only send to the immersion the excess, so in the scenario above, 1ke excess goes to the element, and you won't be 2kw down .

If bright out the panels could generate most of the 3kw needed but even if they didn't the battery would supply the short fall.

wexfordman2 wrote: »

Why is diverting to the immersion only 4c/kwh ?

That's the price of Gas so you could just heat with gas as that is what you should be comparing with.