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Quick Question - PV Battery Storage & BER

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  • 17-02-2021 10:41am
    #1
    Gumbo
    Moderators, Society & Culture Moderators Posts: 38,486 Mod ✭✭✭✭


    Is the BER Rating effected by the addition of a battery?


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    #2
    ec_pc
    Registered Users Posts: 446 ✭✭ec_pc


    I would imagine they are a factor from a renewables perspective. PV Solar, Batteries and Micro turbines are all mentioned in a BER report.


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    #3
    ec_pc
    Registered Users Posts: 446 ✭✭ec_pc


    I should also add that I think the BER Cert is a bit of a dark art and is all based on some weighted calculation process.

    I am A2 at the moment (still clarifying that) as there were some things missed from the BER cert including the Solar PV and battery (that previous screen shot is from my BER report).

    However interestingly I have a cassette style stove which is airtight and completely inset to the wall with no traditional open fireplace as such in the house (external air supply comes in the bottom of the stove) and there was a query over water temperature both of which dragged the BER rating down. Fireplaces / chimneys even if airtight are a major no-no.


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    #4
    Gumbo
    Moderators, Society & Culture Moderators Posts: 38,486 Mod ✭✭✭✭Gumbo


    ec_pc wrote: »
    I should also add that I think the BER Cert is a bit of a dark art and is all based on some weighted calculation process.

    I am A2 at the moment (still clarifying that) as there were some things missed from the BER cert including the Solar PV and battery (that previous screen shot is from my BER report).

    However interestingly I have a cassette style stove which is airtight and completely inset to the wall with no traditional open fireplace as such in the house (external air supply comes in the bottom of the stove) and there was a query over water temperature both of which dragged the BER rating down. Fireplaces / chimneys even if airtight are a major no-no.

    Yeah not questioning the merits of the BER process and limitations of the DEAP software etc.

    I just have to update my BER for my Solar PV grant. I only done my renovations in 2017 and only got my BER done last year. On paper went from D1 to B1 but I done a lot in fairness. Particularly with insulation and renewables.

    The solar PV company are just processing my
    Paperwork for the grant but the battery is not fitted yet but the full POV array is done and commissioned so if the battery plays no role in the BER figures then in theory I could
    Process the grant paperwork now.


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    #5
    ec_pc
    Registered Users Posts: 446 ✭✭ec_pc


    In that context I don't think it matters. I had a BER cert done by the solar PV installers and by agreement they gave me an E rating as the house was still being renovated. That was Feb 2020 under the old grant scheme and I got my full grant from the SEAI.

    When house was finished, I got A2 rating, new BER cert


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    #6
    MOTM
    Registered Users Posts: 412 ✭✭MOTM


    Having a battery doesn't change the BER grade. All that's needed is the PV and a grid connection. DEAP manual Appendix M1 applies.


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    #7
    Gumbo
    Moderators, Society & Culture Moderators Posts: 38,486 Mod ✭✭✭✭Gumbo


    Thanks guys.
    Assessor confirmed same.


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