TightVent newsletter issue #29: November 2025
The November 2025 edition of the TightVent Europe bi-annual newsletter is now available.
Green Solutions Awards 2024-2025: international winners
The Green Solutions Awards 2024-2025, announced at COP30, honoured 30 international projects driving sustainable construction, highlighting replicable solutions for decarbonisation, biodiversity, and energy efficiency.
Launch of one-stop shops for home energy renovation in cities and regions
Cities and regions are creating one‑stop shops for home energy renovation, an ongoing European Union initiative from October 2025, to support building energy efficiency and help meet climate targets.
Torre Efisa slashes energy use with €8M retrofit
Torre Efisa in A Coruña has undergone a major energy retrofit, enhancing insulation, integrating solar panels, and adopting aerothermal systems. The €8 million project significantly improves energy efficiency, halving consumption and cutting emissions by over 90%.
The costs of the Emissions Trading Scheme in buildings
The new Emissions Trading Scheme in Greece could lead to a critical increase in energy costs for over 850,000 households. Building renovation, replacement of fossil-based systems, and access to energy-efficient housing, financed by the Social Climate Fund, offer a pathway to mitigate this impact.
Demonstration of efficiency and circularity with Ice Box Challenge Oslo
The Ice Box Challenge Oslo shows how the PassivHaus standard and circular design reduce energy losses and carbon footprint. With extreme insulation, airtightness and reusable materials, it achieves up to 90% heating savings and promotes sustainable construction.
The European Investment Bank (EIB) secures 640 low-carbon social homes in Barcelona
The European Investment Bank (EIB) and Barcelona's City Council signed a €113 million agreement to build 640 energy-efficient social homes, advancing affordable housing and EU climate goals.
Financial incentives, skills and market barriers and one-stop shops
Annex 2 of the European Buildings Directive examines how to improve financing, skills, and support services for energy renovation. It proposes financial instruments and one-stop shops to foster a more accessible and effective market towards 2050.
Healthier and sustainable rural homes with RENOVERTY
In many European villages, renovating a home can feel like an impossible task. RENOVERTY aims to change that: it provides rural families with a clear and accessible guide to improve the energy efficiency of their homes, without getting lost in bureaucracy or facing unaffordable costs.
Share your views: help us improve the BUILD UP portal
We want to hear from you! BUILD UP is conducting a short survey to gather feedback from its community and improve the portal’s content, usability, and features — helping us serve you better as Europe’s hub for energy efficiency in buildings.