Polish building energy standards are set by two frameworks operating simultaneously: national technical regulations (Warunki Techniczne — WT) that specify minimum fabric and system performance for new buildings and major renovations, and European Union directives that set longer-term decarbonisation targets. For property owners and developers in Poland in 2026, understanding both layers is necessary to make renovation decisions that comply with current law and remain valid under anticipated 2028 regulation changes.
Warunki Techniczne (WT) 2021: Current Requirements
The Regulation on Technical Conditions to Be Met by Buildings and Their Location (Rozporządzenie w sprawie warunków technicznych, jakim powinny odpowiadać budynki, Dz.U. 2019 poz. 2225 as amended) sets out the current baseline requirements. The 2021 edition introduced the most demanding thermal standards to date, requiring:
| Building element | Max. U-value W/(m²·K) | Notes |
|---|---|---|
| External walls (heated zone) | 0.20 | Reduced from 0.23 in WT 2017 |
| Roofs, top-floor ceilings | 0.15 | Unchanged from WT 2017 |
| Floors on ground, over unheated spaces | 0.30 | Unchanged from WT 2017 |
| Windows (in the wall) | 0.90 | Reduced from 1.10 in WT 2017 |
| Roof windows | 1.10 | Reduced from 1.30 in WT 2017 |
| External doors | 1.30 | Reduced from 1.50 in WT 2017 |
In addition to maximum U-values, WT 2021 introduced a maximum primary energy demand (EP) for new residential buildings of 70 kWh/(m²·year) for a single-family house. This figure accounts for heating, cooling, domestic hot water, and lighting, weighted by the primary energy conversion factor of the energy source. For comparison, an uninsulated 1970s Polish house typically has an EP of 200–350 kWh/(m²·year).
The WT requirements apply in full to new buildings and to major renovations (przebudowa) where the renovation affects more than 25% of the building envelope area. For smaller scope renovations — insulating one elevation, replacing windows — the individual element U-value must meet the relevant maximum in the table above.
EU Energy Performance of Buildings Directive (EPBD) Recast 2024
The recast EPBD (Directive 2024/1275/EU), published in April 2024, sets binding milestones for EU member states:
- All new buildings must be zero-emission by January 2028 (new public buildings: January 2026). A zero-emission building in the directive's definition has very high energy performance, with no on-site fossil fuel combustion, and is at or near zero annual primary energy consumption from non-renewable sources.
- Minimum energy performance standards (MEPS) for the residential sector: Poland must improve the worst-performing 16% of its residential stock to at least EPC class E by 2030, and to class D by 2033. For non-residential buildings, the 16% threshold applies from 2030 (class E) and 2034 (class D).
- National renovation plans: Each member state must publish a National Building Renovation Plan (NBRP) by May 2026 detailing how they will achieve a renovation rate of 3% of floor area per year across public buildings by 2030.
Poland's transposition of the EPBD recast is in progress. The 2028 zero-emission building requirement is expected to be reflected in a WT 2027 revision. Property owners planning renovations in 2025–2026 should be aware that windows and heating systems installed now will need to meet WT 2027 standards when the time comes to replace them again, and that properties with EPC ratings of F or G face mandatory minimum renovation requirements by 2033.
EPC classes in Poland: Polish EPCs use a scale from A+ (best) to G (worst), expressed as primary energy demand in kWh/(m²·year). The class thresholds for residential buildings are: A+ ≤ 30, A ≤ 60, B ≤ 90, C ≤ 120, D ≤ 160, E ≤ 200, F ≤ 300, G > 300. An older uninsulated Polish house is typically rated E, F, or G.
Czyste Powietrze: The Main Residential Subsidy
Czyste Powietrze (Clean Air) is a national programme administered jointly by the National Fund for Environmental Protection and Water Management (NFOŚiGW) and 16 regional environmental protection funds (WFOŚiGW). It finances both fuel-switching (replacing coal boilers with cleaner heating systems) and thermal insulation of single-family houses. As of January 2026:
Benefit Levels and Income Thresholds
| Benefit level | Income threshold (per person) | Max. subsidy | Subsidy rate |
|---|---|---|---|
| Basic (Podstawowy) | up to 135,000 PLN annual income | 66,000 PLN | 30–45% of eligible costs |
| Increased (Podwyższony) | ≤ 1,894 PLN/month per person | 99,000 PLN | 60–80% of eligible costs |
| Highest (Najwyższy) | ≤ 1,090 PLN/month per person (or social benefits) | 135,000 PLN | 90–100% of eligible costs |
The higher benefit levels also allow upfront payment through BGK-partnered banks (prefinansowanie), meaning eligible homeowners can receive the subsidy amount before paying the contractor, rather than as reimbursement after the fact. This significantly reduces the cash-flow barrier for lower-income households.
What Czyste Powietrze Finances
Eligible costs under the January 2026 programme rules include: insulation of external walls, roofs, floors, and ceilings; window and door replacement; heat pump installation (air-source, ground-source, exhaust-air); biomass boiler replacement (must meet Ecodesign standards); connection to district heating; micro-photovoltaic installation (up to 10 kWp) when combined with heat pump installation; and the costs of energy audit and EPC production.
Ineligible under Czyste Powietrze: gas boilers (since the October 2022 revision), new gas network connections, garages, outbuildings, and any costs without documentation (invoices, bank transfers).
Mój Prąd: Solar and Energy Storage
The Mój Prąd programme, in its fifth edition (2023–2026) operated by NFOŚiGW, finances photovoltaic installation for households. The grant amounts and eligible combinations as of early 2026 are:
- PV installation alone: 6,000 PLN (for systems 2–10 kWp) or 7,000 PLN (for systems 10–20 kWp)
- PV + home energy management system (HEMS/EMS): additional 3,000 PLN
- PV + heat pump: additional 5,000 PLN (can be combined with Czyste Powietrze for the heat pump component)
- PV + battery storage: additional 16,000 PLN for batteries with capacity ≥ 2 kWh
Applications for Mój Prąd 5 are submitted through the online portal at mojprad.gov.pl. The programme is separate from Czyste Powietrze and requires its own application; costs cannot be claimed from both programmes for the same installed element.
BGK Thermo-Modernisation Premium
For homeowners or housing cooperatives taking out a bank loan for renovation, the BGK (Bank Gospodarstwa Krajowego) Thermo-Modernisation Premium (premia termomodernizacyjna) provides a one-time payment from BGK equal to 16–26% of the loan amount, which reduces the principal after renovation completion. The renovation must be supported by an energy audit produced by a certified auditor, and must achieve a defined minimum energy saving as modelled in the audit.
This route is often used by housing cooperatives (spółdzielnie mieszkaniowe) and multi-family building owners who have costs exceeding Czyste Powietrze's single-family scope, or who prefer loan financing to reimbursement-based grants.
Combining Multiple Financing Sources
Polish regulations permit combining some public financing sources, subject to rules against double-subsidisation of the same cost item. A renovation project can combine: Czyste Powietrze grant + BGK preferential loan (for costs above the grant ceiling), or Czyste Powietrze grant + Mój Prąd grant (for PV and heat pump as separate cost items). Municipal and regional programmes may offer additional co-financing in some provinces (województwa), particularly for lower-income households.