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Philosophical dilemma

  • 10-02-2023 9:37pm
    #1
    Registered Users, Registered Users 2 Posts: 378 ✭✭


    I have a query for those that have invested in a retrofit domestic solar installation.

    If you have had the means to do so, you are far from starving ie well-off. At what payback in years did you justify the capital cost?

    For me, such a luxurious purchase is more easily offset by living a less-luxurious lifestyle. I imagine that people that retrofit solar PV also eat out frequently and buy luxury cars and gadgets.

    Or am I totally wrong?! Or is it just another gadget/hobby?!



Comments

  • Registered Users, Registered Users 2 Posts: 12,461 ✭✭✭✭the_amazing_raisin


    Well, where do I start...

    Okay, so you've hit on one thing, investing in solar takes cash, rather a hefty chunk of it. So I doubt anyone here is unemployed and on the dole


    Beyond that, I would say well off is a matter of perspective. To me, well off means you have enough money to spend on enjoying life rather than just survival. How much that entales kind of depends on what lifestyle you intend to lead


    Personally, I don't think I've many expensive hobbies, but I'm not exactly Mr Mean either. Like most others I've got a mortgage, kids to support and all the various bills and expenses associated with modern life. I do own a fairly expensive EV, but I'm not sure I'd call it a luxury vehicle, certainly isn't from any of the brands that are typically considered luxury (VW ID.4 if you're curious)

    I'm fortunate in that my income allows me to pay for all of these and have money leftover

    Now the question arises, what should I do with that money? Obviously savings are important, but goals for savings give you something to work towards

    I'd like to spend some money on improving my home and for me getting solar panels is an obvious one. It will offset my considerable electricity bills, pay for itself quite quickly (could be as low as 7 years by my calcs) and will likely increase the value of my home


    Compared to other investments, it seems like a no brainer


    I also have an advantage in that all of my house, heating, cooking and transportation are electrified. So the more solar power I generate the bigger the potential savings

    In addition, given my reliance on electricity, it seems prudent to have some sort of backup supply if the grid fails (it happens every so often)

    Finally, I'm going to roll out the environmental card. I'm not Great Thurnberg, but I'm trying to reduce the impact I'm having to the world around me. Generating my own renewable energy and reducing my usage of fossil fuels helps in this regard

    So, in summary, I wouldn't say it's an expensive gadget. It's an investment which will pay off at some point and save you money. How much and when is largely dependent on your situation, and it's important to have a very clear picture of your consumption, what you can generate and how much that will cost and pay for itself before taking the plunge

    "The internet never fails to misremember" - Sebastian Ruiz, aka Frost



  • Registered Users, Registered Users 2 Posts: 12,461 ✭✭✭✭the_amazing_raisin


    I suppose to give you a clearer picture of my lifestyle, I work from home, I'm a software engineer, my wife is in full time employment.

    I've two kids who are in school (plus afterschool care) and preschool. Regrettably some silly laws mean I can't send them out to sweep chimneys for money yet. None of the houses nearby have chimneys anyway

    I ate out twice this week which is unusually high for me, once was a burrito and the other was a Papa John's pizza, so not exactly fine dining

    I have one or two coffees from the cafe every day


    I don't go on many nights out, maybe once a week for a couple of drinks


    I go on one holiday a year (aiming for two this year) and I'd spend a few thousand on them

    I recently bought a new phone, one before lasted 5 years until I fell on it, turns out Gorilla glass can't withstand my fat arse landing on it.

    I wouldn't say I'm one for buying shiny new things all the time, although I did buy a stand mixer recently which will definitely never pay for itself unless cakes become a currency

    My wife thankfully doesn't go for expensive jewellery or gifts and is very much financially independent (she's actually the top earner)

    Most of my t-shirts are so old I'm risking putting my thumbs through them when putting them on. Did that recently and now I'm annoyed that I have to buy a new one. The closest I'll get to high street clothes is some shirts from M&S, or some jeans from Diesel. I avoid Penney's though, the stuff there is such garbage it could be free and would still be a rip off


    So that's me and my life, I'll leave it to ye to judge if I'm living like a prince or a pauper

    "The internet never fails to misremember" - Sebastian Ruiz, aka Frost



  • Registered Users, Registered Users 2 Posts: 20,280 ✭✭✭✭cnocbui


    What do the coffee's cost?



  • Registered Users, Registered Users 2 Posts: 12,461 ✭✭✭✭the_amazing_raisin


    "The internet never fails to misremember" - Sebastian Ruiz, aka Frost



  • Moderators, Sports Moderators Posts: 19,504 Mod ✭✭✭✭slave1


    Where else is your return on investment 100% guaranteed?



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  • Registered Users, Registered Users 2 Posts: 8,112 ✭✭✭con747


    I thought for a moment I walked into an after hours thread....

    Don't expect anything from life, just be grateful to be alive.



  • Registered Users, Registered Users 2 Posts: 5,492 ✭✭✭Padre_Pio


    Like any investment, you need to have money to invest. People on the breadline don't have the luxury of investments.



  • Registered Users, Registered Users 2 Posts: 22,415 ✭✭✭✭endacl




  • Registered Users, Registered Users 2 Posts: 20,280 ✭✭✭✭cnocbui


    If that's each, then you'd likely save more money making your own coffee, than with a PV install. Thats €2,880 a year. I'd estimate that making it yourself that might be 8Kg of coffee a year, at say €30 per kg for decent coffee is €240, so you could save €2,640 pa on coffee vs €1,200 pa on lecy with a 3.2kw PV installation that cost you €5,279 to install. Make your own coffee for 3 years and the savings would more than pay for a PV install.



  • Moderators, Education Moderators, Home & Garden Moderators Posts: 8,260 Mod ✭✭✭✭Jonathan


    Indeed. This thread needs to get back in track or it will be locked in the morning.



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  • Registered Users, Registered Users 2 Posts: 2,021 ✭✭✭jkforde


    personally I used some savings and a small loan to pay for my setup... to minimize dirty lecky, to do something tangible, to set an example for my two young fellas whose generation are environmentally fucked by previous generations. luxurious? no, principally a principle that I choose to invest in. just an idea but maybe stop imagining other people's luxurious lives.

    🌦️ 6.7kwp, 45°, SSW, mid-Galway 🌦️

    "Since I no longer expect anything from mankind except madness, meanness, and mendacity; egotism, cowardice, and self-delusion, I have stopped being a misanthrope." Irving Layton



  • Registered Users, Registered Users 2 Posts: 6,909 ✭✭✭Alkers


    My solar is paying for itself.


    What a strange thread!



  • Registered Users, Registered Users 2 Posts: 1,543 ✭✭✭DC999


    Tis a wind-up thread. Throw a grenade and cause a reaction



  • Registered Users, Registered Users 2 Posts: 8,112 ✭✭✭con747


    I know, a bit of personal information posted that should be deleted @Jonathan if you think so.

    Don't expect anything from life, just be grateful to be alive.



  • Registered Users, Registered Users 2 Posts: 2,752 ✭✭✭yankinlk


    I invested in PV in 2021. Like others I did the math on guaranteed investment. I had a small deposit, a nice grant from seai and a small 2 year loan from local credit union. That loan will be paid off this year.

    Other than my loan payments, so far my bills have been VERY close to zero since PV went in. That means I will be enjoying years of no more bills... With a payback for the deposit and loan arriving within 6 years.

    It looked like a no brainer to me, but I'm going to be in my home for at least 10 years and I know exactly how much electricity I need for the next 5.

    Don't believe the hype, do the math and make an informed investment...



  • Registered Users, Registered Users 2 Posts: 12,461 ✭✭✭✭the_amazing_raisin


    True, although I don't drink two coffees every day, so the savings aren't quite that much. Probably closer to €1500 which is closer to my calculated solar savings

    There's also other considerations, like if I had a coffee machine, I'd drink more coffee which is bad for my health. Also I enjoy the walk to the coffee shop, which has physical and mental health benefits

    Finally, I tried making my own coffee and it turns out I'd make a rubbish barista 😂

    It's easier to get solar panels than learn to make coffee

    "The internet never fails to misremember" - Sebastian Ruiz, aka Frost



  • Registered Users, Registered Users 2 Posts: 6,067 ✭✭✭Chris_5339762


    I think you almost have to ignore the initial costs (if you can) and just focus going forward. Also, its worth noting that it becomes a hobby in a way, looking at usage, throwing the dishwasher on when the sun is out as it is "free". It becomes a bit of fun too, and thats worth something.



  • Registered Users, Registered Users 2 Posts: 378 ✭✭PaoloGotti


    Thanks to those that responded.

    Not sure why some think this is a wind up thread, must be very sensitive folk. It is far from a slam dunk decision.

    To set my own context: my electricity bills totalled just €1,200 last year (excluding gov credit), of course that is rising. Only two of us in the A rated house.

    So similar to the poster above, I would need my bills to get to near zero for a reasonable payback on a €5-7k installation.

    The point comparing it to other riskier investments is a good one.



  • Registered Users, Registered Users 2 Posts: 6,296 ✭✭✭Ubbquittious


    It can turn into a gadget/hobby if you let it or you can take the hard-nosed approach and only install something if you are pretty much guaranteed a break even in 5 years.

    There are loads of normal people who are putting in solar who don't have any expensive gadgets or EV and don't have loads of spare cash laying around.



  • Registered Users, Registered Users 2 Posts: 12,461 ✭✭✭✭the_amazing_raisin


    I suggest starting with your consumption in kWh instead of your bills, it makes it a lot easier to see how much you can reduce by having solar panels

    You need to figure out how big a system you can install within your budget and then use an online calculator to see how many kWh you'll generate. I've found PV GIS to be pretty good


    There's other potential ways to save money. For example a lot of people here have batteries to increase their self consumption of solar. A neat trick is that you can charge it off the grid at night rates in winter when there isn't a lot of sunshine so you avoid using the grid during the day when it's expensive

    Another method to save money is using a diverter of some sort. This is a device that senses when you have more solar power than you're consuming and switches something on to use up the excess


    Most common one is to heat water using the immersion heaters and a device called an Eddi, although there's other options and people have had success using some electric heaters as diverters

    If you have any plans to own an EV or PHEV at any point you can also use it as a diverter. Hard to beat free fuel


    Finally, the ESB will pay you for your nice solar electricity that you send to the grid. If you aren't on a smart meter then you'll receive an estimated amount.

    This is frankly a bit of a joke since you can literally export nothing but still be paid. You can get up to €200 tax free form this depending on the size of the system

    So there's a lot of sums to look at before making your decision.

    FWIW, my best case estimate sees my monthly bills reduced from €211 per month (increasing to €316 in May) down to €80 per month, before PSO levy and government supports


    That's €2,832 saved per year, on a €14k system then payback is just 5 years

    But I'm also saving around €2k per year by not spending money on petrol or gas/oil heating. It wouldn't be fair to consider those against the payback for the solar but the savings are real

    "The internet never fails to misremember" - Sebastian Ruiz, aka Frost



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  • Registered Users, Registered Users 2 Posts: 378 ✭✭PaoloGotti


    Thanks a mill, plenty to ponder after that post.



  • Registered Users, Registered Users 2 Posts: 12,461 ✭✭✭✭the_amazing_raisin


    No worries, hope this helps

    If I may, it doesn't seem much like a philosophical issue to you as much as a question of whether it's a worthwhile investment

    There's other smart ways to spend your money as well. Paying a lump sum off your mortgage might pay off more but probably takes longer


    In terms of home improvements, improving your insulation is almost always a smart move and improves the comfort levels of your home as well as paying for itself

    So it's important to consider all your options, see what they'll cost and what impact they have before making your decision

    "The internet never fails to misremember" - Sebastian Ruiz, aka Frost



  • Moderators, Arts Moderators, Recreation & Hobbies Moderators Posts: 10,903 Mod ✭✭✭✭Hellrazer


    Or you could do what I did - solar as a service. No installation charges, no upfront costs and €50 a months for 10 years for a 4.4kw system. You can clear the balance anytime you want, pay lump sums off it if you want.

    In my case as the house was built in the 80s I had to get some rectification works done on the electrics in the house - new fuse board, new earths at my own cost of €1000 but I did a deal with the installers that meant they paid for half of the works.

    As long as it generates €50 a month and more you are covered. My install went live on the 15th January, generated 98kw to the end of January @ .42 per unit so €41.16 of the €50.00 generated in just 2 weeks in January so it should cover itself and more all year.

    My plan is to clear the balance in 2 years and after that its all free energy.



  • Registered Users, Registered Users 2 Posts: 12,461 ✭✭✭✭the_amazing_raisin


    Just to make sure I understand you, you'll be clearing the balance using the savings over what you're paying monthly for the Solar panels?

    Otherwise if you paid it from general savings then it would just be a deferred cost and would have the associated payback period

    "The internet never fails to misremember" - Sebastian Ruiz, aka Frost



  • Registered Users, Registered Users 2 Posts: 6,909 ✭✭✭Alkers


    Or just pay the 50 per month, inflation reduces the real cost to you, if the panels stop working, stop paying them until they repair and if they go bust you're Scot free



  • Moderators, Arts Moderators, Recreation & Hobbies Moderators Posts: 10,903 Mod ✭✭✭✭Hellrazer


    Thats some of the plan. Hard to work out the details until I have full year installed though. But the plan is to use what I would be paying for electricity ie the savings from the grid off the panels. So instead of paying 50 a month Id hope to pay closer to 200 - cleared in just over 2 years. The PV wont save me €150 a month - well at least I dont think so but combined with other changes Ive made - attic insulation, wall insulation, making sure nothing is on standby and electric heaters (saving gas) using the solar I hope to come close to it and then Ill top up the rest.

    Ive already gotten my baseload to just above 100 watts over night when it was 500w. Thats 4 units down to 1 unit over night with some small changes.That change alone saves 90 units over a month and almost covers the solar subscription.

    Its not just about installing solar and hoping for a saving straight away - Its about a mindset change aswell.



  • Moderators, Arts Moderators, Recreation & Hobbies Moderators Posts: 10,903 Mod ✭✭✭✭Hellrazer


    Ive thought of that aswell - The warranty is 10 years . They`ll be more inclined to fix something if I pause the payments.



  • Registered Users, Registered Users 2 Posts: 7,549 ✭✭✭facehugger99


    One thing I didn't understand in your post - In addition, given my reliance on electricity, it seems prudent to have some sort of backup supply if the grid fails (it happens every so often)

    How does that work? When we have a power cut, the solar panels don't feed any energy into the house, the battery doesn't charge, etc.

    Is there some way around this?



  • Registered Users, Registered Users 2 Posts: 12,461 ✭✭✭✭the_amazing_raisin


    Yes, you can get a manual changeover switch fitted to bypass the fireman switch. This is fine by the electrical regulations (or so the installer tells me) but isn't allowed for the grant. So a lot of people get them fitted after the grant has been paid

    "The internet never fails to misremember" - Sebastian Ruiz, aka Frost



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  • Registered Users, Registered Users 2 Posts: 24,565 ✭✭✭✭lawred2




  • Moderators, Education Moderators, Home & Garden Moderators Posts: 8,260 Mod ✭✭✭✭Jonathan


    Check out the list of installers sticky. The Solar as a Service provider.



  • Moderators, Arts Moderators, Recreation & Hobbies Moderators Posts: 10,903 Mod ✭✭✭✭Hellrazer




  • Registered Users, Registered Users 2 Posts: 889 ✭✭✭eclipsechaser


    I do find your take on the numbers a bit strange. If I could buy a device that printed €1200 a year for 20 years and probably beyond, I would bite your hand off to purchase that device for €5,000-€7,000.

    Only investing in early Bernie Madoff would generate better returns.

    I won't do out the maths for you but even if it generated €800 (2/3 of what you say would be be required) then I think that would be a no-brainer even at the top end of your cost.



  • Moderators, Home & Garden Moderators Posts: 6,654 Mod ✭✭✭✭graememk


    My first year, 2021, I saved about 800 euro, Had about a 8-9 yr payback, back when electricity rates were a lot cheaper, Locked in a cheap rate until july 2022.

    2022, its at 1200, before any FIT.

    2023, I still have a decent rate until july, and if I took 2022 use/production its pushing 1900, ex any FIT.



  • Registered Users, Registered Users 2 Posts: 5,492 ✭✭✭Padre_Pio




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  • Registered Users, Registered Users 2 Posts: 18,995 ✭✭✭✭kippy


    Interesting thread.

    I notice from a lot of Solar threads that those putting in Solar tend to live in either very large houses or houses with a heatpump etc but I could be wrong here.

    Living in an average 1600 detached 2 storey house build circa 2001. House hasn't been pumped or actic insulated much more above standard. Double Glazed PVC windows and doors. Average electicity use per year. 5 person house. Used around 4600 units last year down from 5300 the previous year. Heating is OFC with old school burner.

    No one home during the day for 70 percent of the time however summer and holidays kids and wife etc at home.

    Based on roof size I'd expect 8 - 10 panels maximum in a south east facing direction. No obstuctions etc. At most I'd reckon 3.2 to 4.0 kw system (4 would be a push) Haven't gotten pricing etc but I'd expect that to cost roughly 5-6 K after grant, would probably want hot water diverter and car charger while the work was being done also pushing things up a bit but would hope no more than 9K after all grants.

    To me, until I get the house insulated, and a drafty front door replaced it doesn't make much sense to spend 9K yet while money is tight.

    Solar as a service might be an option based on what has been said here, but I don't think the system would cover enough of my elec requirements for the payback to be worthwhile. 9K is enough to upgrade the OFCH burner to condensor, put a porch in and insulate the house better than it is now - which is probably a better use of the money.



  • Moderators, Home & Garden Moderators Posts: 6,654 Mod ✭✭✭✭graememk




  • Moderators, Arts Moderators, Recreation & Hobbies Moderators Posts: 10,903 Mod ✭✭✭✭Hellrazer


    You could be describing my house exactly!!!

    However in saying that I insulated the attic to 300mm, drylined the exterior walls , resealed the front door and windows. The windows are old school double glazed aluminium. You`d be surprised how little the above costs if you can DIY it.

    Insulation was probably around 40 a roll, insulated plasterboard around 40 a sheet.

    The door seals were from Amazon at something like 10.00 for 30 metres of the stuff. The windows were resealed around them with silicone and expanding foam - I basically removed the old crappy sealer and resealed them completely. Any seals that were completely gone were replaced.

    Thats why I went with the solar as a service. Its at the very least going to cover the 50 every month. And anything over that cuts my electricity bill - In January it covered it in 2 weeks so if it had been a full month at the same generation it would have taken 50 off my next bill.



  • Moderators, Sports Moderators Posts: 19,504 Mod ✭✭✭✭slave1


    some strange savings being mooted here, savings should be based on the lowest cost out there and reflect night rate usage, not mad high supplier rates, if you want to save money then change provider and habits first, then PV savings kick in.

    I could leave energia D/N and go to the most expensive provider and be saving thousands according to mis-logic posted here from time to time



  • Registered Users, Registered Users 2 Posts: 12,461 ✭✭✭✭the_amazing_raisin


    It doesn't seem too crazy, like I said I could be saving around €2,400 for around €14k investment. So half the investment for half the savings seems logical

    To be fair, it isn't really a money printer (that would be a nice feature) but a way of saving money. The problem is that when people have money they tend to spend it on something (yay consumerism) so when you save money you don't exactly notice straight away


    The only way I've found is to make regular savings and increase the savings amount when you do something to reduce costs. It's a lot more visible then and, for me at least, having the money off in a savings account gives some mental separation to spending money so I don't just immediately spend it on junk

    "The internet never fails to misremember" - Sebastian Ruiz, aka Frost



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  • Registered Users, Registered Users 2 Posts: 1,748 ✭✭✭kabakuyu


    What size system do you have ?

    What are you currently paying per unit to make a saving of 2.4k per annum?



  • Registered Users, Registered Users 2 Posts: 12,461 ✭✭✭✭the_amazing_raisin


    Not installed yet, but I'm getting a 6kWp system anda battery at some point in the future

    I based my savings calculations on the Energia EV plan which I'll be on when my current discount expires in May, plus the amount I'll be getting from deemed export


    I calculated how much output I'd be getting using an online calculator and deducted that from my annual usage (minus around 10% for losses)

    When I've the battery I'll be charging it from night rate when there's not much sunlight expected to lower the cost of buying electricity from the grid a lot

    "The internet never fails to misremember" - Sebastian Ruiz, aka Frost



  • Registered Users, Registered Users 2 Posts: 18,995 ✭✭✭✭kippy


    Where did you get a system for 50 euro a month? I can't see anything for that kind of money. Perhaps you got a great deal when prices were lower. I will have to look into the door seals alright



  • Registered Users, Registered Users 2 Posts: 8,112 ✭✭✭con747


    The installer is on the list here https://www.boards.ie/discussion/2058243236/solar-pv-boards-members-installer-information#latest The price they charge now has increased a lot since last year when they offered a basic system for around €29.99 a month.

    Don't expect anything from life, just be grateful to be alive.



  • Moderators, Arts Moderators, Recreation & Hobbies Moderators Posts: 10,903 Mod ✭✭✭✭Hellrazer


    I ordered last September for a November install and its was €55 for 4kw + Diverter. - The same system today is €77 and without diverter is €66.00 - thats a serious increase in price. My actual direct debit price is €50.50 but that was due to the deal I did regarding the rectification works.


    At €77 youd have to look at other installers prices for a 4kw system with diverter - Im not sure it makes sense at €77 a month.



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