Setting up One-Stop-Shops and implementing the EPBD – to make the RenoWave happen!
Project: RenoWave
Virtual Meeting & Physical Meeting
04. December 2025
10:00 - 12:00 (CET)
One-Stop-Shop extended model to increase the multi-apartment building stock renovation in the BSR
RenoWave
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RenoWave
PROGRAMME 2021-2027
priority
3 Climate-neutral societies
objective
3.2 Energy transition
Project type
Implementation
January 2023 - December 2025
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RenoWave
The project RenoWave establishes cooperation among homeowners, construction companies, energy agencies and public authorities to initiate more energy-efficiency renovations in multi-apartment buildings.
In the spotlight
The Guideline for OSS service providers is a practical guide for municipalities, regions, energy agencies, and organisations that plan to set up or strengthen a One-Stop-Shop (OSS) for apartment building renovation. Developed in line with the goals of the EU Energy Performance of Buildings Directive (EPBD), it helps local actors support homeowners through every step of the renovation process – from the first idea to implementation. The model is built around four key elements: data management, marketing and communication, homeowners’ forums, and technical assistance. Together, they provide a clear and user-friendly framework to make building renovation more efficient, accessible, and trusted across communities.
Project summary
Over three years, the RenoWave project strengthened transnational cooperation across the Baltic Sea Region to help municipalities and organisations better support the renovation of homeowned multi-apartment buildings. Partners worked together to develop solutions and pilot different One-Stop-Shop (OSS) approaches and understand how residents can be guided through a long and complex renovation journey — from early conversations to planning, financing and implementation.
A key learning of the project is that renovation rarely begins with technical planning. It starts with people asking questions, comparing options, discussing costs and weighing risks. RenoWave showed that when advisory support is accessible, personal and long-term, residents are more willing to make decisions and follow through with renovation steps.
Through transnational collaboration, the project brought together partners and pilots in Sweden, Finland, Estonia, Latvia, Lithuania, Poland and Germany. This exchange helped regions understand not only what works locally, but also what may lie ahead by observing solutions already functioning elsewhere. The project outcomes were made possible with the support of the Interreg Baltic Sea Region Programme.
The results of RenoWave are now available as a practical OSS Guideline for service providers, complemented by a set of additional sub-guides that align with the ambitions of the Energy Performance of Buildings Directive (EPBD). Together, these materials offer guidance on communication, financing, technical assistance and stakeholder involvement — a guide that municipalities, energy agencies and housing actors can adapt to their own renovation context.
Although the work focused on multi-apartment buildings, many lessons can be transferred to other building types and shared ownership structures. RenoWave demonstrates that renovation becomes easier to begin — and to sustain — when guided support is continuously available, grounded in trust and strengthened through transnational cooperation.
details
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Project type
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ImplementationJanuary 2023 - December 2025
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RenoWave
in numbers.
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3.46MillionTotal
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2.77MillionErdf
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0.00MillionNorway
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RenoWave
in numbers.
- 60.607006815.6323059
- 61.057072728.191762333789967
- 57.313171225.2748551
- 50.059138119.9372696
- 53.55472228.5707565
- 56.958568224.1119083
- 52.524001913.3467871
- 54.687045825.2829111
- 50.252165519.0147168
- 65.588451522.1544743
- 57.848001226.994532
Project partners
Lead partnerCounty board of Dalarna
- TownFalun
- Region
- CountrySweden
- RegionDalarnas län
- RepresentativeCounty board of Dalarna
- Phone
- E-Mail
- Web
Total partner budget
553,757.00
City of Lappeenranta
- TownLappeenranta
- Region
- CountryFinland
- RegionEtelä-Karjala
- RepresentativeCity of Lappeenranta
- Phone
- E-Mail
- Web
Total partner budget
352,500.20
Vidzeme planning region
- TownCesis
- Region
- CountryLatvia
- RegionVidzeme
- RepresentativeVidzeme planning region
- Phone
- E-Mail
- Web
Total partner budget
299,985.00
Association of Communes and Cities of Małopolska Region
- TownKrakow
- Region
- CountryPoland
- RegionMiasto Kraków
- RepresentativeAssociation of Communes and Cities of Małopolska Region
- Phone
- E-Mail
- Web
Total partner budget
192,290.00
Magistrat of the City Bremerhaven
- TownBremerhaven
- Region
- CountryGermany
- RegionBremerhaven, Kreisfreie Stadt
- RepresentativeMagistrat of the City Bremerhaven
- Phone
- E-Mail
- Web
Total partner budget
351,000.00
Baltic Environmental Forum Latvia
- TownRiga
- Region
- CountryLatvia
- RegionRīga
- RepresentativeBaltic Environmental Forum Latvia
- Phone
- E-Mail
- Web
Total partner budget
139,025.00
Housing Initiative for Eastern Europe
- TownBerlin
- Region
- CountryGermany
- RegionBerlin
- RepresentativeHousing Initiative for Eastern Europe
- Phone
- E-Mail
- Web
Total partner budget
336,699.90
Let's renovate the city NGO
- TownVilnius
- Region
- CountryLithuania
- RegionVilniaus apskritis
- RepresentativeLet's renovate the city NGO
- Phone
- E-Mail
- Web
Total partner budget
338,000.00
Polish Foundation for Energy Efficiency
- TownKatowice
- Region
- CountryPoland
- RegionKatowicki
- RepresentativePolish Foundation for Energy Efficiency
- Phone
- E-Mail
- Web
Total partner budget
263,580.00
North Sweden Energy Agency
- TownLuleå
- Region
- CountrySweden
- RegionNorrbottens län
- RepresentativeNorth Sweden Energy Agency
- Phone
- E-Mail
- Web
Total partner budget
378,800.00
Development Centre of Võru County
- TownVõru
- Region
- CountryEstonia
- RegionLõuna-Eesti
- RepresentativeDevelopment Centre of Võru County
- Phone
- E-Mail
- Web
Total partner budget
253,000.00
Contacts
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Project manager, Financial manager, Communication managerMarit RagnarssonCounty board of Dalarna
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