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Title: DIY Photovoltaic Panel Installation: Subsidy, Qualifications, Warranty & User Experiences

jx123jx 32223 47
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Can I install ground-mounted photovoltaic panels myself and still get the 'My Electricity' subsidy, what qualifications are needed for the DSO paperwork, and how does self-installation affect inverter warranty?

Yes, you can self-install, but for the 'My Electricity' subsidy the program distinguishes between third-party installation and self-assembly: if you do it yourself, you must have the proper qualifications and submit a self-assembly declaration; if a company installs it, you attach the installation invoice instead [#18513010][#18498568] The official reply quoted in the thread says self-assembly means you performed the entire installation, including electrics, on your own because you have the appropriate qualifications, and in that case the operator can connect the system to the grid [#18513010] For the DSO/ZE paperwork, the installer declaration must be signed by a person with electrical qualifications such as SEP E, and several replies say the grid operator may also want that person to handle the notification and meter replacement paperwork [#18495223][#18498568] For the subsidy paperwork, thread participants say you usually submit invoices for the purchased components plus the self-assembly declaration, not an installation invoice, when the system was mounted by the applicant [#18495935][#18499026] Warranty is separate: many inverter manufacturers require installation by an authorized person, so self-installation can affect warranty support unless the company’s warranty terms accept it [#18495223]
AI summary based on the discussion. May contain errors.
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  • #1 18495135
    jx123jx
    Level 10  
    Posts: 33
    Rate: 46
    Hello
    I want to install the photovoltaic panels on the ground, I buy them on account but:
    - with a subsidy, my current is 5000 PLN that you can do it yourself if you have the skills and qualifications (what) or is it related to the receipt by an electrician?
    - What is the case with the warranty, e.g. for an inverter because I installed it myself and how it broke up.

    Someone of you has already assembled it and how does it look like with my electricity? The problems are what.
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    #2 18495223
    ksysju
    Level 15  
    Posts: 84
    Help: 7
    Rate: 24
    Hello

    In the grant documentation, you indicate that you assemble yourself and that's it

    The warranty for the inverter depends on the company. In general, he writes something like "installation by an authorized person"

    You need someone with E permissions for ZE papers.
  • Helpful post
    #3 18495267
    Jan_Werbinski
    Level 33  
    Posts: 2821
    Help: 76
    Rate: 671
    You assemble and that's it. Permissions were not needed.
  • #4 18495336
    karolark
    Level 42  
    Posts: 14401
    Help: 702
    Rate: 2516
    Jan_Werbinski wrote:
    You assemble and that's it. Permissions were not needed.


    What documents for the application for the "My Electricity" subsidy?

    The requirement to grant a subsidy will be the fulfillment of the program conditions and the presentation of relevant documentation:

    a copy of the invoice for the delivery and installation of the photovoltaic system with the annotation "Reported to the My Electricity Priority Program",
    proof of payment of the invoice / declaration of payment made
    Certificate of the Distribution Network Operator confirming the installation of the meter together with the number of the Power Collection Point in which it is installed
    an information clause for applicants of the "My Electricity" Priority Program.
  • #5 18495358
    jx123jx
    Level 10  
    Posts: 33
    Rate: 46
    "copy of the invoice for the delivery and installation of the installation"
    Well, this is the invoice for the assembly. If I buy and install it myself, I don't have an invoice for the assembly? Are there problems with that?
  • #6 18495360
    leonada
    Level 15  
    Posts: 138
    Help: 2
    Rate: 27
    For sure, when you have invoices and you are the owner of the plot, you deduct 18% from the tax. if you have invoices from 2019, this year you deduct it (panels, inverter and accessories). And if you have invoices from this year, you will only deduct them next year.
  • #7 18495370
    jx123jx
    Level 10  
    Posts: 33
    Rate: 46
    leonada wrote:
    For sure, when you have invoices and you are the owner of the plot, you deduct 18% from the tax. if you have invoices from 2019, this year you deduct it (panels, inverter and accessories). And if you have invoices from this year, you will only deduct them next year.


    We are talking about co-financing my electricity 5000 PLN, and I know that from the year I deduct it
  • #8 18495935
    comer3
    Level 27  
    Posts: 746
    Help: 123
    Rate: 56
    As you assemble yourself (having the appropriate permissions), you complete the FV from the purchase of materials for the installation and submit a statement on self-assembly (Annex 4) and in the application you mark it in point 36. (answer 10 to https://mojprad.gov.pl/pytania-i-odpowiedzi/).

    karolak wrote:

    the requirement to grant a subsidy will be the fulfillment of the program conditions and the presentation of relevant documentation:

    a copy of the invoice for the delivery and installation of the photovoltaic installation with the annotation "Reported to the My Electricity priority program"


    As part of the second call for proposals, the above note on the invoice is not required (answer 27 at https://mojprad.gov.pl/pytania-i-odpowiedzi/).
  • #9 18496641
    Jan_Werbinski
    Level 33  
    Posts: 2821
    Help: 76
    Rate: 671
    jx123jx wrote:
    "copy of the invoice for the delivery and installation of the installation"
    Well, this is the invoice for the assembly. If I buy and install it myself, I don't have an invoice for the assembly? Are there problems with that?

    Perhaps you can invoice yourself. There used to be internal invoices, and that was possible. I don't know now.
  • #10 18496700
    theo33
    Level 27  
    Posts: 849
    Help: 78
    Rate: 321
    Jan_Werbinski wrote:
    jx123jx wrote:
    "copy of the invoice for the delivery and installation of the installation"
    Well, this is the invoice for the assembly. If I buy and install it myself, I don't have an invoice for the assembly? Are there problems with that?

    Perhaps you can invoice yourself. There used to be internal invoices, and that was possible. I don't know now.


    He cannot invoice himself
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  • #11 18497023
    comer3
    Level 27  
    Posts: 746
    Help: 123
    Rate: 56
    If he does the installation himself and has the appropriate permissions, he does not have to have an invoice for the assembly - only for components - I already wrote about it in the above post, giving the appropriate sources (links).
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  • #12 18497534
    jx123jx
    Level 10  
    Posts: 33
    Rate: 46
    comer3 wrote:
    If he does the installation himself and has the appropriate permissions, he does not have to have an invoice for the assembly - only for components - I already wrote about it in the above post, giving the appropriate sources (links).


    Comer3 I'm still interested in what it means
    "has the appropriate permissions to do so"

    - When I am a handyman and I will put it together (I do not have any sep qualifications, I am not an electrician, etc.), I have an electrician friend and he will connect it to the network, write the appropriate connection letter and that he has E and sep qualifications, for energy will everything be alright or will they pick on.
  • Helpful post
    #13 18498568
    comer3
    Level 27  
    Posts: 746
    Help: 123
    Rate: 56
    Hello,

    When it comes to reporting an installation to the Power Plant, it should be fine - in the application for connecting a micro-installation to the grid, your friend with permissions will fill in the "Micro-installation installer declaration" section.

    But when it comes to co-financed from the "My Electricity" program, your friend must also issue an invoice for the assembly - only then will the program conditions be met.
    So if you are doing the installation independently and you want to apply for funding from "My current" (2nd call for proposals), you need to:
    - be a party to the contract with the DSO (the contract with ZE is to be for your data);
    - have invoices for the purchase of components for the installation with a clear record on the invoice that these are components for your installation (the invoice issued to your data, address, notes on what these components are, etc.);
    - fill in the application + some other papers + declaration of self-assembly (Annex 4 - here you may need a copy of your permissions for inspection by Nfosigw);

    So only the owner of the contract with the ZE, who did the installations on his own having the right to do so (E / D / RES / construction), can apply for funding. In any other case, apart from the invoice for the installation components, you must also have an invoice for the assembly.

    I got this information from an energy advisor from nfosigw.gov.pl because I also asked about the conditions for granting funding for an installation made by myself.
  • #14 18498590
    jx123jx
    Level 10  
    Posts: 33
    Rate: 46
    comer3 wrote:
    Hello,

    When it comes to reporting an installation to the Power Plant, it should be fine - in the application for connecting a micro-installation to the grid, your friend with permissions will fill in the "Micro-installation installer declaration" section.

    But when it comes to co-financed from the "My Electricity" program, your friend must also issue an invoice for the assembly - only then will the program conditions be met.
    So if you are doing the installation independently and you want to apply for funding from "My current" (2nd call for proposals), you need to:
    - be a party to the contract with the DSO (the contract with ZE is to be for your data);
    - have invoices for the purchase of components for the installation with a clear record on the invoice that these are components for your installation (the invoice issued to your data, address, notes on what these components are, etc.);
    - fill in the application + some other papers + declaration of self-assembly (Annex 4 - here you may need a copy of your permissions for inspection by Nfosigw);

    So only the owner of the contract with the ZE, who did the installations on his own having the right to do so (E / D / RES / construction), can apply for funding. In any other case, apart from the invoice for the installation components, you must also have an invoice for the assembly.

    I got this information from an energy advisor from nfosigw.gov.pl because I also asked about the conditions for granting funding for an installation made by myself.


    And it was supposed to be so beautiful .. Again you have to pay the company ..
  • #15 18498596
    karolark
    Level 42  
    Posts: 14401
    Help: 702
    Rate: 2516
    Reverse this lamentation can be minus ?
    Grants free freebies everywhere
    Guess whose money it is
    They take 100, they give some teen% and people with their tongues out are salivating
  • #16 18498648
    theo33
    Level 27  
    Posts: 849
    Help: 78
    Rate: 321
    jx123jx wrote:
    comer3 wrote:
    Hello,

    When it comes to reporting an installation to the Power Plant, it should be fine - in the application for connecting a micro-installation to the grid, your friend with permissions will fill in the "Micro-installation installer declaration" section.

    But when it comes to co-financed from the "My Electricity" program, your friend must also issue an invoice for the assembly - only then will the program conditions be met.
    So if you are doing the installation independently and you want to apply for funding from "My current" (2nd call for proposals), you need to:
    - be a party to the contract with the DSO (the contract with ZE is to be for your data);
    - have invoices for the purchase of components for the installation with a clear record on the invoice that these are components for your installation (the invoice issued to your data, address, notes on what these components are, etc.);


    - fill in the application + some other papers + declaration of self-assembly (Annex 4 - here you may need a copy of your permissions for inspection by Nfosigw);

    So only the owner of the contract with the ZE, who did the installations on his own having the right to do so (E / D / RES / construction), can apply for funding. In any other case, apart from the invoice for the installation components, you must also have an invoice for the assembly.

    I got this information from an energy advisor from nfosigw.gov.pl because I also asked about the conditions for granting funding for an installation made by myself.


    And it was supposed to be so beautiful .. Again you have to pay the company ..


    You counted that it is economically profitable to buy the necessary materials with 23% VAT, and doing your own work, than to look for and outsource it to a local company with competitive prices, they will charge it with 8% VAT and the price will be comparable, unless you also want to be satisfied with your own " with hands made "
  • #17 18498696
    leonada
    Level 15  
    Posts: 138
    Help: 2
    Rate: 27
    It's cheaper to do it yourself. If you count the materials, you will get the sum of xxx. And if you ask the company about the same size of installations, it will give you a price that is about 100% higher, i.e. 2xxx. In a word, the company's labor costs twice the installation. So unprofitable in my opinion. Cheaper to do it yourself and pay 23% watt. I asked the company about the cost of the installation that we did ourselves with a friend. The material amounted to 13,000 with the installation of the growatt 9000 inverter and 16 panels 310W plus a steel low frame and wiring plus security. The company priced it at 25,000, of course, with 8% watt. There are so many panels for now, because such funds are only available. The panels will be added at a later date. The company's valuation was based on the power of the panels, ie about 5 kW. I will add that it was one of the cheaper companies.
  • #18 18498775
    karolark
    Level 42  
    Posts: 14401
    Help: 702
    Rate: 2516
    Just a few details ?
    Permissions
    Skills
    guarantee
    Nothing interests the owner (of course we are talking about a reliable company) is a problem for fitters
    But not everyone can be a hero in their quarters ?
  • #19 18498792
    baru0
    Level 12  
    Posts: 49
    Rate: 16
    The guarantees are provided on the receipt.
    Everyone earns money somewhere, but if you want to do something yourself, it's respect.
    For example, he will stay for the bathroom and the company will earn there. ;) .
    If the panels were on the roof, I would also call the company, and on the ground I did everything to myself. Of course, if I connect to the network, an electrician will earn.
    Water heating option for now.
  • #20 18498811
    theo33
    Level 27  
    Posts: 849
    Help: 78
    Rate: 321
    If I did not count it for 13,000 gross, I would not have a chance to buy the material that you replaced, at least here in the southern part of Poland
    taking into account: 16 Delta panels 400 each, growatt 4100 and class 1 + 2 protectors, 1 pc each. AC and DC are net 11,000. until under. VAT is 13,500
    and yet a construction is needed, some wires, grounding rods and others, and I think that the mats are needed. will amount to about 16 -17 thousand and own work also costs money and the prices of companies installing, apart from ceramic tile roofs, with the basic mats mentioned above. it's an average of 4 - 4.5, so the 20 - 22.5 will be ready with the notification and invoice.
    However, it is a little cheaper on your own
  • #21 18498994
    jx123jx
    Level 10  
    Posts: 33
    Rate: 46
    theo33 wrote:
    jx123jx wrote:
    comer3 wrote:
    Hello,

    When it comes to reporting an installation to the Power Plant, it should be fine - in the application for connecting a micro-installation to the grid, your friend with permissions will fill in the "Micro-installation installer declaration" section.

    But when it comes to co-financed from the "My Electricity" program, your friend must also issue an invoice for the assembly - only then will the program conditions be met.
    So if you are doing the installation independently and you want to apply for funding from "My current" (2nd call for proposals), you need to:
    - be a party to the contract with the DSO (the contract with ZE is to be for your data);
    - have invoices for the purchase of components for the installation with a clear record on the invoice that these are components for your installation (the invoice issued to your data, address, notes on what these components are, etc.);


    - fill in the application + some other papers + declaration of self-assembly (Annex 4 - here you may need a copy of your permissions for inspection by Nfosigw);

    So only the owner of the contract with the ZE, who did the installations on his own having the right to do so (E / D / RES / construction), can apply for funding. In any other case, apart from the invoice for the installation components, you must also have an invoice for the assembly.

    I got this information from an energy advisor from nfosigw.gov.pl because I also asked about the conditions for granting funding for an installation made by myself.


    And it was supposed to be so beautiful .. Again you have to pay the company ..


    You counted that it is economically profitable to buy the necessary materials with 23% VAT, and doing your own work, than to look for and outsource it to a local company with competitive prices, they will charge it with 8% VAT and the price will be comparable, unless you also want to be satisfied with your own " with hands made "


    If I do it myself, I will get a total of 19,000, the company has priced me at 26,500. But if I do it myself and I don't get a subsidy of 5,000, it is not profitable for me to do it myself. Because everyone has a different opinion on whether there must be a fvat for assembly or not. If I do it myself.
  • Helpful post
    #22 18499026
    theo33
    Level 27  
    Posts: 849
    Help: 78
    Rate: 321
    There is no need to provide an invoice for the assembly, you are presenting f. For the purchased mat. and if the sum exceeds 10,000, then up to 50%, that is, 5 you should get.
    You submit a declaration of self-assembly, qualifications or permissions, you do not present anything about it, check yourself at https://www.gov.pl/web/gov/s profit-z-programu-moj-prad
  • Helpful post
    #23 18499351
    comer3
    Level 27  
    Posts: 746
    Help: 123
    Rate: 56
    My friend jx123jx write an inquiry directly to the energy advisor - data are available at nfosigw.gov.pl. Describe your case in detail. I quoted the answers I got when I asked about a similar issue (the difference is that I have, among others, SEP / RES qualifications, but I am not yet a party to the contract with the DSO). I think I wrote about three e-mails in my case to different people (advisers) - the replies were fairly similar, and each e-mail ended with the following sentence:
    "Any doubts relating to the interpretation of the provisions of the Program Regulations are resolved by the National Fund for Environmental Protection and Water Management."

    So that in order not to spit in the chin later, that we interpret something differently than nfosigw, it is good to ask the source beforehand, if there is such a possibility.
  • #24 18500297
    mcz1
    Level 19  
    Posts: 391
    Help: 21
    Rate: 26
    Colleagues, have you checked the tax deductions from solar installations for 2019? I looked in the Pity elfin program and there is no such position there, I think they have a bug in the program. Last year I extended the installation, but I have an earlier contract with the energy company. Is it enough to enter the cost from the invoice of salt devices in the drink and reduce the income by this amount? Of course, self-assembly with SEP authorization.
  • #25 18500342
    leonada
    Level 15  
    Posts: 138
    Help: 2
    Rate: 27
    It does not matter whether you installed it yourself or not and whether you have permissions or not. Required invoices for the name of the plot owner. I had invoices for panels, cables and an inverter from 2019. My wife accounted for zero drinking. In column B, point 6, enter the total amount from the invoices.
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  • #26 18513010
    jx123jx
    Level 10  
    Posts: 33
    Rate: 46
    comer3 wrote:
    My friend jx123jx write an inquiry directly to the energy advisor - data are available at nfosigw.gov.pl. Describe your case in detail. I quoted the answers I got when I asked about a similar issue (the difference is that I have, among others, SEP / RES qualifications, but I am not yet a party to the contract with the DSO). I think I wrote about three e-mails in my case to different people (advisers) - the replies were fairly similar, and each e-mail ended with the following sentence:
    "Any doubts relating to the interpretation of the provisions of the Program Regulations are resolved by the National Fund for Environmental Protection and Water Management."

    So that in order not to spit in the chin later, that we interpret something differently than nfosigw, it is good to ask the source beforehand, if there is such a possibility.


    I sent my inquiry and got a reply :)

    Good morning,

    The program allows two variants of mounting the installation:

    Installation by a third party (company) - in this case, a copy of the invoice for installation is an attachment to the application

    Self-assembly - performed by the Applicant (in accordance with the declaration), which means that the person submitting the application had previously performed the entire assembly (including the electrics) on his own, because he has the appropriate qualifications. Thanks to this, the operator will be able to connect the installation to the network

    The case described by you is not a self-assembly.

    The Distribution Network Operator should be asked for the required permissions, in the case of self-assembly, only a statement is attached to the application.
  • #27 18513632
    Piotr38
    Level 12  
    Posts: 29
    Help: 1
    Rate: 2
    It is best to cooperate with a licensed electrician who knows PV. You can make the installation yourself, but the electrician should supervise the execution, make the appropriate measurements and apply for a micro-installation to be connected to the DSO. What permissions the person performing the installation should have is described, for example, here: https://fotowoltaika-energia-sloneczna.pl/kto-moze-montowac-fotowoltaike/
  • #28 18860982
    Citek
    Level 22  
    Posts: 712
    Help: 13
    Rate: 52
    Hello

    Sorry, I'm reheating the topic a bit, but according to what I've read, nowhere does nobody require any qualifications to apply for funding under "My Electricity" - as of 08/08/2020.
    The only permissions you will need are for the power plant to replace your meter with a bidirectional one, i.e. if you do not have such permissions, you need to call an electrician to check everything from you and take it back.
  • #29 18861269
    Jan_Werbinski
    Level 33  
    Posts: 2821
    Help: 76
    Rate: 671
    Citek wrote:
    Hello

    Sorry, I'm reheating the topic a bit, but according to what I've read, nowhere does nobody require any qualifications to apply for funding under "My Electricity" - as of 08/08/2020.
    The only permissions you will need are for the power plant to replace your meter with a bidirectional one, i.e. if you do not have such permissions, you need to call an electrician to check everything from you and take it back.

    Also not. The power plant replaces the meter by sending its electrician. It happens, for example, for me that I replace the meter and the electrician only checks and seals. You don't need any permissions.
  • #30 18861292
    Rhaavir
    Level 14  
    Posts: 81
    Help: 9
    Rate: 42
    PERMISSIONS - they are needed to "pick up" the installation !!! If we do not have a notification to ZE, we will NOT receive funding.
    In order for ZE to replace the meter, we must submit a notification - and to do this, we MUST have the authorization.
    WARRANTY - for example, Fronius requires the installer / service technician to undergo their training, YES, I know that they do not ask for training when we report the inverter for warranty, BUT they can always.

    Installation - it is not easy, especially in the case of structures - too many times I have seen an "amateur" installation ending up with leaks in the roof, problems with electrics.

    So I would seriously consider if it is worth it.
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Topic summary

LABEL_AI_GENERATED
The discussion revolves around the installation of photovoltaic panels, focusing on self-assembly, subsidies, qualifications, and warranty issues. Users share insights on the "My Electricity" subsidy program, emphasizing that self-installation is permissible if the applicant has the necessary qualifications. Documentation required includes invoices for components and a declaration of self-assembly. Concerns about warranty coverage for inverters installed by non-professionals are raised, with some brands requiring authorized installation for warranty validity. Participants discuss the economic benefits of DIY installation versus hiring a company, noting significant cost savings when purchasing materials directly. The importance of having an electrician involved for grid connection and compliance with local regulations is also highlighted.
AI summary based on the discussion. May contain errors.

FAQ LABEL_AI_GENERATED

TL;DR: Up to 5 000 PLN subsidy is still payable for 2–10 kWp PV, but only if an authorised installer issues an invoice or the owner files a signed self-assembly declaration with valid SEP/UDT papers; “permissions are needed to ‘pick up’ the installation” [Elektroda, jx123jx, #18495135; Elektrode, Rhaavir, #18861292].

Why it matters: Missing a single form or qualification voids both the grant and inverter warranty.

Quick Facts

• Subsidy: 5 000 PLN per installation, 2–10 kWp range, call 5.0 [gov.pl/Program-Mój-Prąd]. • DIY route: SEP E/D or UDT-PV certificate required for DSO acceptance [Elektroda, damianlodz, post #18894407] • Labour invoice waived if Annex 4 self-assembly statement attached [Elektroda, comer3, post #18498568] • Fire-safety opinion mandatory for > 6.5 kWp since 09-2020 [Elektroda, damianlodz, post #19026520] • VAT: 8 % turnkey vs 23 % materials-only; typical saving ≈15 % [Elektroda, theo33, post #18498648]

Can I install photovoltaic panels myself and still receive the 5 000 PLN “My Electricity” grant?

Yes. File the application online, attach equipment invoices and Annex 4 self-assembly declaration. You must also hold recognised electrical credentials (SEP E/D, RES, UDT-PV) and be the contract holder with the DSO. Otherwise an external firm must invoice the labour [Elektroda, comer3, #18498568; gov.pl/Program-Mój-Prąd].

Which permissions qualify as “appropriate” for self-assembly in 2024?

Distribution operators accept: 1. SEP Group 1 certificate for Operation (E) or Supervision (D); 2. UDT PV installer certificate; 3. Building-design licence for electrical installations. One of these must appear in the installer declaration sent to the DSO [Elektroda, damianlodz, post #19026520]

Do I need an invoice for assembly if I build the system myself?

No. Submit only equipment invoices plus the signed Annex 4 statement. The Fund verified that self-installers are exempt from labour invoices in the second and later calls [Elektroda, comer3, post #18495935]

How will the inverter warranty work without an authorised company?

Read the inverter T&Cs. Brands such as Fronius reserve the right to refuse claims if a certified installer did not commission the unit [Elektroda, Rhaavir, post #18861292] Some makers still honour parts warranties but may deny on-site service. Get written confirmation before purchase.

Are ground-mounted arrays eligible for the subsidy and tax deduction?

Yes, provided the array feeds a residential meter and the DSO installs a bidirectional meter. Earlier drafts suggested an exclusion, but NFOSiGW clarified that location (roof or ground) does not limit eligibility [Elektroda, Piotr_Krasy, post #19352178]

Single-phase or three-phase inverter—what does the DSO expect?

Operators allow up to 3.6 kW on one phase. Above that, they can demand a three-phase inverter for network balance. Inter-phase energy settlement works automatically in net-billing, so 3-phase usually reduces voltage trips [Elektroda, adse, post #21037320]

What documents must I send to the DSO when I finish the build?

  1. Micro-installation notification form with installer declaration. 2. Single-line diagram and panel layout. 3. Copy of electrical measurements (PE, insulation, RCD tests). 4. Copy of your SEP/UDT certificate. The DSO swaps the meter within 30 days [Energa “Przyłączenie M-instalacji” 2024].

How big are the DIY cost savings?

Forum users reported material cost 13 000 PLN vs turnkey quote 25 000 PLN for a 5 kWp system—about 92 % higher if outsourced [Elektroda, leonada, post #18498696] VAT savings partly offset this gap when a firm installs at 8 % VAT.

What new fire-safety rule applies above 6.5 kWp?

Since September 2020, installations > 6.5 kWp need a written opinion from a certified fire-protection expert and a DC disconnect accessible to firefighters [Elektroda, damianlodz, post #19026520] Missing this stops the meter change.

Edge case: What if grid voltage on one phase exceeds 253 V?

A three-phase inverter shuts down entirely when any phase breaches the limit. Using three micro-inverters (one per phase) localises the trip and keeps two phases generating [Elektroda, rutas15 & adse, post #21037320]

How do I claim the thermal-modernisation tax deduction?

Enter the sum of VAT invoices (materials and/or labour) in PIT-O Part B, Field 6. The owner’s name on the invoice must match the property deed; installation method is irrelevant [Elektroda, leonada, post #18500342]

Quick 3-step How-To: filing a self-assembly grant application

  1. Scan equipment invoices and the signed Annex 4 declaration. 2. Complete the online form at mojprad.gov.pl, selecting “montaż własny”. 3. Upload the DSO meter-installation confirmation and submit. NFOSiGW issues the decision within 30 working days [mojprad.gov.pl FAQ, 2024].
AI summary based on the discussion. May contain errors.
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