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

If that's before grant its not bad but if its the total then keep on looking.

You could get a Solis 5 or 6kwh hybrid inverter and 5kwh PureDrive battery for the price some are charging for the Huawei battery on it's own. The biggest problem is getting any stock at the moment. All installers are finding it hard to source enough stock for the orders on their books and people will just have to wait I'm afraid.

Hi folks, I’m looking for some guidance if possible. If this is the wrong place to post please delete and my apologies.

i have and annual usage of 13500kwh to 14000kwh annually. 7500kwh of this during day time. The house is A3 rated running a heat pump built in 2011. My plan was to install a 5-6kw Pv system with invertor and 10-15kw battery to reduce the day time running cost which occurs mostly morning and evening charging the battery from the panels or during the cheaper night rate. We have solar tubes so hot water is sorted.

ive gotten a preliminary quote today of over 18k before the grant for 12x380 Hyundai panels and hauwei inverter and 10kw battery that stack. Makes no sense for us at that cost but I hoping someone can sent me to someone that can make it more worthwhile for payback or perhaps my idea isn’t the best.

apologies again if this is the wrong forum.

Thank you for getting back. I’ll absolutely check the installer index now.

we have pretty much eliminated all day time waste. We run the appliances at night on the night rate and all bulbs are led. During the summer our total usage drops way back so pretty confident it’s the heat pump. I may try to run the heatpump at a higher set back at night and see if there is then less demand for daytime heating.

We set it back to 16c in the living areas when we aren’t in the house (most of the day) then bring it to 22c when in the house this is all timed. Bedrooms at 18c. Upping it to 18c setback perhaps might reduce the requirement for day time units.

having said that I’m still looking to reduce those day time units when we use them most which is after 3:30pm and not peak generation time.

Yesterday's news said that an upgrade to a heat pump could multiply your energy usage/costs, so really a false economy in anything rated under A1

First off have a look here https://www.boards.ie/discussion/2058234646/interested-in-solar-pv-read-this-faq-first#latest and then look at some of the other threads and it will give you a better idea of cost.

Hi, the house is 250metre square. We are rural so have a deep well pump and pressurised water system. The heat pump is heading for 12 years old so that’s a consideration. The energy rating is A3 and summer time usage for us 10kw day and 9kw night where the heatpump isn’t operating to space heat simply to hear water. There isn’t much we can do to reduce usage as the water pumps are essential and I won’t change the heatpump until it’s closer to end of life. For us and I’m open to correction the best way forward is a solar set up and reduce the bill that way.

in relation to the heatpump everything is relative. If we were building now perhaps we’d try go passive with the cost and design limitations back then were prohibitive. We really like the heatpump and it’s served us well over the years and for now there are no better options.

please feel free to jump on anything I’ve said I’m happy to hear what others are doing and willing to learn.

I was going to ask about a way of monitoring energy. A lot of what I’ve seen are a bit complicated need to be wired in. Is there anything basic that someone would recommend.

I absolutely get what your saying on usage. I’ve check all lights and they’re led except for two fluorescent tubes in the garage that are off. The mhrv runs constantly and then we have a 250metre well so a monster pump for that and then a second pump in the garage for pressurising the hot water system it’s not gravity. The heat pump is a daiken altherma 14kw hight temp air source unit

there’s isn’t anything else drawing power other than appliances which we run on the night rate whenever possible.

a monitor is definitely the way to go do an recommendations would be great. Keep in mind I have limited electrical experience so messing around puttin wires into the fuse board doesn’t appeal. Struggling to see something basic though.

I paid a deposit with the same company on the 19th of April. And this was confirmed a few days later. I was told then that I could expect installation at the end of June or possibly July. Which I was happy enough with at the time. But I mad contact at the end of June and after speaking to the owner. I heard the rep had retired. But thy confirmed they had my deposit but they only had one picture of my house from the survey. So I arrange for him to call to the house and survey it again. At the time he said installation would be in or around 3 weeks. Also I needed 16 optimisers for each of the solar panels. Additional costs, but if I needed them , so I agreed with the revised quote. Now I'm told they are finding it hard to source optimisers and they are looking at September! That makes it 5 months after my initial deposit. I just find that's not an acceptable timeframe from the initial deposit.

Our house runs solely on electricity and we also have a heat pump. So I stand to make good savings from the PV panels being installed. But I'd like for it to happen within a couple of weeks than months.

The owner is a very nice person to deal with. And I know they have been struggling to to get materials from their suppliers. But I think I've been very patient up to now.

Ordering the eco eye 600 should do the job for an idiot like myself so thank you for the info on it.

Everything that goes into a socket is getting switched off or unplugged over the next few days. The tv we usually switch off with it’s own power button but I’ll go the whole hog and unplug it. I’ll switch off the heatpump also as with the sunny weather the tubes should generate enough water for us and a good test for them also. See what happens next.

I’m still inclined to go with the solar as even if we reduced our consumption the pay back seems to be in an around 9 years at €1600 per year. ( rough calculation on my part) there doesn’t seem to be a spreadsheet for working out payback with panels and batteries that I’ve seen. I’m hoping that you’d make 5300kwh in the year based on the global solar atlas site. Everything over an above in terms of what you might make charging the battery on the night rate and using it at peak time would be a bonus.

I think I’m getting obsessed :-)

By the way most modern TV's use about 1 watt in standby mode - I was just throwing it out there as an example of something which might be in your house sitting there eating up leccie which you haven't thought about. Some of the crappier Virgin media boxes use 20-30watts (which did surprise me), but typically things which heat/cool are the main culprits.

We have the exact same type of roof and got 3 panels on the South. Smallest roof for us too. Then have E and W too. South (though small) helps give a good spread of power through the day.

But I am glad I pushed for them. Only one installer would quote for the effort of 3 roofs. Slowed the roofers down.

Difficulty is it's 3 roof pitches so we ended up with 2 inverters. But South roof only has 3 panels so could maybe be a micro inverter (instead if invertor) for you - others suggest they work well for small number of panels. I won't pretend to know. Tell the installers you'd like to see options on it.

If you have a flat roof, you can use that too with optimisers on the whole roof if gets shade.

Or ignore South and max E and W.

I wanted a spare 1.4 kWh to charge the EV (lowest juice it needs to run). So South helps that as EV not home in morning when E side is doing it's thing

Yeah @bullit_dodger I did show our installer the Fronious whitepaper you sent me on that E and W split on same string when we were looking at options. He wasn't keen sadly. I even offered to be a guinea pig on it if he agreed to change at no cost if we didn't get the output.

Not to say it wouldn't work well. But I didn't want to push a design he didn't agree with. Just in case we had issues and they dug in that was a 'non standard design' we requested. But would have been good to give it a whirl.

That whitepaper did suggest they should be similar angles AFAIK. So flat roofs on E and W. Which we wouldn't typically have in Ireland. Was tested in Oz I think. Though a lot of the paper went over my head to be fair :)