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Inverter charge/discharge questions

  • 24-10-2021 1:26pm
    #1
    irishchris
    Registered Users, Registered Users 2 Posts: 3,233 ✭✭✭


    Quick question for any one with Solis inverters. If you have them set for nighttime charging and then day discharging from 8am are you then losing out on any generation on the sunny days in late autumn and winter. For example yesterday was promised poor so charged batteries from 4-8am on night rate but then from 8am on when sun is out in intervals they are effectively ignoring the solar generation as set to only discharge. Am I missing something?

    Other thing that is quite frustrating is if you forget to set max export to 0 as soon as the battery discharge time kicks in they discharge full power to the grid as well as the house.

    Comparing to other inverters I have seen also where you can remotely set batteries to charge from grid the Solis disappoints in that it has to be manually turned on with the inverter should I wish to charge on occasional days.

    Many thanks for any help or advice with this



Comments

  • #2
    jkforde
    Registered Users, Registered Users 2 Posts: 2,009 ✭✭✭jkforde


    Screenshot_20211024-164323~01.png

    just set the Charge period (eg 0600-0800), leave rest blank, works for me anyhow using Solis 5G with latest firmware

    🌦️ 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



  • #3
    yankinlk
    Registered Users, Registered Users 2 Posts: 2,743 ✭✭✭yankinlk


    This was explained well by idc in this thread, look for his post....

    https://www.boards.ie/discussion/2058101518/solar-pv-hints-tips-troubleshooting


    don't set discharge time at all...



  • #4
    stevekn
    Registered Users Posts: 7 ✭stevekn


    to take advantage if the Octopus negative pricing on this windy day, with my Solis inverter, ive charged my batteries to max, (overnight) and am wanting to use some of this afternoons “free” grid energy to clean my oven ( self cleaning)

    how do i make the Solis inverter use the grid and not deplete my batteries ?

    ive tried to include a discharge time period with 0A discharge rate, but it is ignored, and the batteries are supplying the power !

    Steve



  • #5
    graememk
    Moderators, Home & Garden Moderators Posts: 6,287 Mod ✭✭✭✭graememk


    Charge time and set the charge rate to 0



  • #6
    loyatemu
    Registered Users, Registered Users 2 Posts: 15,108 ✭✭✭✭loyatemu


    if your battery is full when the sun is shining, you'll export any excess. So you're effectively charging up at (say) 7c and selling at (say) 20c. As I understand it, if you have a cheap night rate, it's worth charging your battery every night, so long as your export rate is higher than the night rate.

    In my case, we're still on a 24h rate and if I switch to a smart plan with cheap night rate, my day/peak rates go up. So I'm really not sure if there is a benefit as in the winter at least I could be worse off.



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  • #7
    stevekn
    Registered Users Posts: 7 ✭stevekn


    thanks hadn't thought to programme charge at zero !

    wouldn't it be nice if there were manual charge/discharge-time button ( on app?) rather than having to go in and programme everything in the clunky interface.



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