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Random Renewables Thread

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Comments

  • #2282
    slave1
    Moderators, Sports Moderators Posts: 19,829 Mod ✭✭✭✭slave1


    https://www.boards.ie/discussion/comment/122337027#Comment_122337027

    After losses it's hardly worth your while, what batteries do you have, they should not be sitting at 100% for days given they will be discharging from around 21:30 these days until 7:00 (aside from any low rate charging hours)



  • #2283
    graememk
    Moderators, Home & Garden Moderators Posts: 7,021 Mod ✭✭✭✭graememk


    Auto transformers : one of the reasons why the grid is 230v ±10%

    https://youtube.com/shorts/-VUR0WM8LlY?si=MvmgRfu994KshGfG



  • #2284
    SD_DRACULA
    Registered Users, Registered Users 2 Posts: 2,604 ✭✭✭SD_DRACULA


    https://www.boards.ie/discussion/comment/122337773#Comment_122337773

    Couldn't help myself 😂

    Untitled Image


  • #2285
    the_amazing_raisin
    Registered Users, Registered Users 2 Posts: 13,003 ✭✭✭✭the_amazing_raisin


    https://www.boards.ie/discussion/comment/122337773#Comment_122337773

    For the ignorant, technology seems like magic

    Then you gain some knowledge and realise that they work on very well defined principles

    Then you become an expert and realise that it's a miracle anything works considering the horrendous operating conditions they have to deal with

    Eventually you conclude that the only reasonable explanation is magic 😂

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



  • #2286
    slave1
    Moderators, Sports Moderators Posts: 19,829 Mod ✭✭✭✭slave1


    Like when the kids are small and asking all the questions, eventually I ended up with three responses, it comes from a factory, a wizard does it or ask your mother



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  • #2287
    [Deleted User]
    Posts: 2,704 ✭ [Deleted User]


    https://www.boards.ie/discussion/comment/122338389#Comment_122338389

    My favourite from my parents was "go play with the traffic" 🤣 I



  • #2288
    ELM327
    Registered Users, Registered Users 2 Posts: 23,109 ✭✭✭✭ELM327


    https://www.boards.ie/discussion/comment/122338108#Comment_122338108

    There's actually a common joke in big companies along those similar lines, a knowledge horseshoe if you will, so only those that have no idea how it works, or know exactly how it works, know it's magic. Everyone else in the middle thinks they understand it and its rational.

    Every big website or company is likely held together by chewing gum and dreams, old code written a long time ago with layers of iterations on top. One company I worked in, 10 years ago, where I was building and maintaining pricing calculators in VBA, worked off a MS DOS based CRM system built in 1979. I can't imagine how much legacy coding is in that.



  • #2289
    slave1
    Moderators, Sports Moderators Posts: 19,829 Mod ✭✭✭✭slave1


    https://www.boards.ie/discussion/comment/122338885#Comment_122338885

    at least you could hear it back then



  • #2290
    bullit_dodger
    Registered Users, Registered Users 2 Posts: 2,662 ✭✭✭bullit_dodger


    https://www.boards.ie/discussion/comment/122338908#Comment_122338908

    Millions of lines of COBOL out there. Millions :-)



  • #2291
    the_amazing_raisin
    Registered Users, Registered Users 2 Posts: 13,003 ✭✭✭✭the_amazing_raisin


    Following on from my earlier question, does anyone know the settings for a Sofar HYD 6K EP to get it to discharge to grid?

    Currently I've a time of use rule set to charge to 90% from 2-5am

    I tried setting a rule to go to 50% from 10pm to midnight, but I think it'll only charge on time of use mode, not discharge

    I'm guessing I'll need to use timing mode to discharge for a set amount of time? If the battery SoC is too low then will it just stop discharging?

    Is there any way to discharge to a specific SoC?

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



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  • #2292
    graememk
    Moderators, Home & Garden Moderators Posts: 7,021 Mod ✭✭✭✭graememk


    https://www.boards.ie/discussion/comment/122351301#Comment_122351301

    I think you should be able to do it in the time of use settings, failing that a sofar2mqtt and do it from home assistant



  • #2293
    jkforde
    Registered Users, Registered Users 2 Posts: 2,048 ✭✭✭jkforde


    just a fyi re. PV cell efficiencies..

    https://www.pv-magazine.com/2024/07/03/all-solar-cell-efficiencies-at-a-glance-updated-3/

    and state of solar PV here

    https://www.irishsolarenergy.org/post/isea-s-2nd-scale-of-solar-report-on-european-solar-day

    but just to put the above in context, there are 1.8m occupied homes as of 2022! so residential solar has some scope for years to come.

    Post edited by jkforde on

    🌦️ 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



  • #2294
    the_amazing_raisin
    Registered Users, Registered Users 2 Posts: 13,003 ✭✭✭✭the_amazing_raisin


    Just back from the wee north and the amount of renewables up there compared to here is amazing

    Was looking at one random shed with the whole roof covered in solar panels, reckon there were 98 in total. Plus two small wind turbines nearby

    Driving back a lot of homes or businesses had panels installed

    I guess we can thank Arlene Foster for that one thing. Too bad she blew the NI budget out of the water doing so

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



  • #2295
    irishchris
    Registered Users, Registered Users 2 Posts: 3,275 ✭✭✭irishchris


    https://www.boards.ie/discussion/comment/122351301#Comment_122351301

    Use passive mode and set rate of discharge. Have mine setup to switch to passive mode at 9pm and discharge to 25% before switching back to time of use using home assistant.



  • #2296
    the_amazing_raisin
    Registered Users, Registered Users 2 Posts: 13,003 ✭✭✭✭the_amazing_raisin


    Get those credit cards ready lads

    https://www.electrive.com/2024/07/12/plummeting-battery-prices-in-china-may-normalise-evs-globally/ ,

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



  • #2297
    SD_DRACULA
    Registered Users, Registered Users 2 Posts: 2,604 ✭✭✭SD_DRACULA


    https://www.boards.ie/discussion/comment/122372019#Comment_122372019

    Someone tell nkon that they are overpriced now 😁



  • #2298
    unkel
    Registered Users, Registered Users 2 Posts: 66,638 ✭✭✭✭unkel


    https://www.boards.ie/discussion/comment/122376977#Comment_122376977

    Except NKON already had prices in 2023 that were about as low as the article predicts prices are going by the end of this year 😂

    My ads on adverts.ie:

    https://www.adverts.ie/member/5856/ads



  • #2299
    Capt'n Midnight
    Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 94,818 Mod ✭✭✭✭Capt'n Midnight


    PV in a mountain reservoir getting 50% more than at lower altitude. Also bifacials are better at shedding snow.

    Three factors come together to enable this high-altitude solar farm to
    produce up to 50% more energy than one on low-lying land: the cold
    temperatures, stronger UV rays, and light reflected from the surrounding
    snow. Photovoltaic cells are more efficient in cold weather, as Fuchs
    points out. Söderström also highlights the potential of this choice of
    location for generating power, especially in winter: "There is much less
    fog at an altitude of 1,810 metres than lower down. And the snow
    reflects the sunlight, so the panels can harness more energy – a
    phenomenon known as the albedo effect." The use of two-sided modules is
    very effective here because, when snow lands on a panel, the light
    reflected from one side heats up the other side by generating energy,
    causing the snow to slide off. 



  • #2300
    Capt'n Midnight
    Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 94,818 Mod ✭✭✭✭Capt'n Midnight


    Someone mentioned driers a while back and the thought occurred that if you do extra towels when electricity is cheap you can them throw them in the drier with your clothes later on when electricity isn't so cheap.



  • #2301
    bullit_dodger
    Registered Users, Registered Users 2 Posts: 2,662 ✭✭✭bullit_dodger


    https://www.boards.ie/discussion/comment/122385240#Comment_122385240

    Another thing I like about that is that the infrastructure for the distribution is already at the location (for the hydroelectricity plant) so not having to build a substation from scratch is a big plus. Sadly I noted that article is from 2021, and as far as I could tell they've not done anything further in 2 - 3 years.



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  • #2302
    the_amazing_raisin
    Registered Users, Registered Users 2 Posts: 13,003 ✭✭✭✭the_amazing_raisin


    https://www.boards.ie/discussion/comment/122385250#Comment_122385250

    Would the idea be to dry the laundry faster? Don't really get why you'd throw already dry towels in the dryer

    Tbh I reckon 75% of the time I've used my dryer (at least once daily) has been directly from solar or stored night rate electricity

    I used to run the dryer overnight but to be fair it's probably the biggest fire risk of most appliances so I gave up on that. The heat pump dryers are pretty easy on electricity, almost cheaper than a washing line 😉

    Speaking of fire hazards, I also stopped charging any devices overnight. The cost difference is peanuts considering the size of a phone battery. Charging a phone beside your bed, often using a cheapo charger and usually on some IKEA furniture which is effectively kindling, is just asking for trouble

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



  • #2303
    graememk
    Moderators, Home & Garden Moderators Posts: 7,021 Mod ✭✭✭✭graememk


    https://www.boards.ie/discussion/comment/122385472#Comment_122385472

    Don't use cheap chargers.. 😉



  • #2304
    Capt'n Midnight
    Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 94,818 Mod ✭✭✭✭Capt'n Midnight


    https://www.boards.ie/discussion/comment/122385472#Comment_122385472

    Yes, to dry stuff faster by having the towels adsorbing some of the wetness. Towels are probably still cheaper than batteries.

    "A towel, it says, is about the most massively useful thing an interstellar hitchhiker can have. Partly it has great practical value - you can wrap it around you for warmth as you bound across the cold moons of Jaglan Beta; you can lie on it on the brilliant marble-sanded beaches of Santraginus V, inhaling the heady sea vapours; you can sleep under it beneath the stars which shine so redly on the desert world of Kakrafoon; use it to sail a mini raft down the slow heavy river Moth; wet it for use in hand-to- hand-combat; wrap it round your head to ward off noxious fumes or to avoid the gaze of the Ravenous Bugblatter Beast of Traal (a mindboggingly stupid animal, it assumes that if you can't see it, it can't see you - daft as a bush, but very ravenous); you can wave your towel in emergencies as a distress signal, and of course dry yourself off with it if it still seems to be clean enough..”
    ― Douglas Adams, The Hitchhiker’s Guide to the Galaxy



  • #2305
    deezell
    Registered Users, Registered Users 2 Posts: 7,644 ✭✭✭deezell


     The Hitchhiker’s Guide to the Galaxy!

    The bizarre character with the extra non functional rubber head sticking out at angle in the first TV adaptation, that's what always pops into my (functioning) head whenever that book title is mentioned. Probably the flakiest bit of special non-effects in a science fiction production ever, but somehow appropriate, given that the main protagonist conducts the entire adventure in a dressing gown and slippers, iirc?



  • #2306
    the_amazing_raisin
    Registered Users, Registered Users 2 Posts: 13,003 ✭✭✭✭the_amazing_raisin


    https://www.boards.ie/discussion/comment/122386208#Comment_122386208

    The TV adaptations greatest accomplishment and mistake was to somehow accurately reproduce a lot of the books on screen

    Plenty of WTF moments throughout and the cheesy special effects only added to the overall experience

    And yes, Arthur Dent was wearing his pyjamas and dressing gown for at least the first book

    If you ever want a truly bizarre trip down memory lane, check out the text adventure game based on the books. It was pretty brutal, if you took too many turns in the first chapter the bulldozer crashes through your house 🫣

    https://downloads.bbc.co.uk/interactive/embed/container.html?url=//downloads.bbc.co.uk/interactive/h2g2/main.js&height=577px&width=944px&path=//downloads.bbc.co.uk/radio/games/h2g2/

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



  • #2307
    Exiled Rebel
    Registered Users, Registered Users 2 Posts: 760 ✭✭✭Exiled Rebel


    Be great to see this built... unfortunately there's a fairly high chance it won't be built before planning expires.

    "The company noted that delivery of the project will be subject to SSE securing an economic route to market, as well as a final investment decision by the company to proceed to construction.

    SSE added that changes to Ireland’s current grid connection regulations will be required so as to permit the new solar project to dynamically share the current export capacity of the existing wind farm."

    https://www.agriland.ie/farming-news/sse-renewables-granted-planning-for-solar-farm-in-wexford/


  • #2308
    unkel
    Registered Users, Registered Users 2 Posts: 66,638 ✭✭✭✭unkel


    https://www.boards.ie/discussion/comment/122394438#Comment_122394438

    Sharing a grid connection with an existing wind farm seems like an excellent idea. Wind and sun compliment each other, the rarely go full blast at the same time. So little to no upgrades would be needed. And it will substantially lower the cost per kWh production. 27MW however is not very big though, is it? I suppose everything counts

    My ads on adverts.ie:

    https://www.adverts.ie/member/5856/ads



  • #2309
    deezell
    Registered Users, Registered Users 2 Posts: 7,644 ✭✭✭deezell


    Whatever happened the little wind turbines that you could bolt to your gable end, B&Q used to have two models. Something like this feeding your battery all night or on dull windy days would be a bonus. Perhaps there's a planning issue with them in suburbs, but might work well in the boonies.



  • #2310
    graememk
    Moderators, Home & Garden Moderators Posts: 7,021 Mod ✭✭✭✭graememk


    https://www.boards.ie/discussion/comment/122395030#Comment_122395030

    Yeah there is a planning exemption for wind turbines. It needs it's own stand, can't be attached to buildings and distance from boundary needs to be more than the hight of the pole/stand (eg if it blew over it wouldn't land in your neighbours).

    Micro wind isn't worth it in most cases.



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  • #2311
    deezell
    Registered Users, Registered Users 2 Posts: 7,644 ✭✭✭deezell


    https://www.boards.ie/discussion/comment/122395047#Comment_122395047

    That put paid to the gable/rooftop ones so.



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