The Vert.lu blog
Blog, Energy & renovation in Luxembourg
Klimabonus subsidies, solar, heat pumps, batteries and more.
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The latest published article
Replacing your boiler or building a new home in the Grand Duchy and hesitating between a heat pump and a gas boiler? Installation cost, Klimabonus 2026 subsidies, running costs, carbon footprint and 15-year ROI, the full comparison, calibrated for Luxembourg.
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The most recent articles
A website, a CRM and AI tools reduce your carbon footprint, and the Luxembourg State reimburses 70% of the cost via the SME Packages Digital, up to €17,500 per company. Here's how to benefit, and why it's also the fastest way to capture energy renovation projects.
Luxembourg's Ministry of the Economy reimburses 70% of the eligible costs of a sustainability project between €3,000 and €25,000 excl. VAT, up to €17,500 in aid. Here's how the programme works, who qualifies and how Vert.lu helps you find the right provider.
The Luxembourg government is actively promoting the energy transition, and homeowners are at the forefront of making this ambition a reality. Thanks to the "Klimabonus" subsidy program, transforming your home into a more energy-efficient and sustainable building is now more accessible. This article guides you through the key concepts of subsidized energy renovation in Luxembourg, helping you to see your project more clearly and make the best choices for your wallet and the planet.
Klimabonus is Luxembourg's flagship subsidy scheme for residential energy renovation and renewable energy. The 2026 edition confirms the increased amounts introduced in 2023 and clarifies the fully digital application process on MyGuichet.lu. This guide details the subsidies per technology (PV, battery, heat pump, solar thermal, insulation, ventilation, EV charger), eligibility criteria, the step-by-step MyGuichet.lu procedure and the most common mistakes to avoid.
The installer makes or breaks a solar project: they size the system, stand behind the mounting work and usually prepare the Klimabonus file. Here are the checks to run, the classic pitfalls and the questions to ask before signing in the Grand Duchy.
With Klimabonus support and electricity around €0.25/kWh, a home battery in Luxembourg has moved from comfort accessory to an investment you can actually compute. Here is how it works, the typical figures, the payback calculation and the cases where storage does not pay for itself.
Contents
All articles, by topic
The 7 published articles, sorted by topic.
Grants & subsidies · 2
Solar, battery & heating · 3
The Vert.lu blog
What the editorial section covers
The vert.lu blog brings together articles on public housing subsidies, energy renovation, the various technologies related to building energy, choosing a craftsman, and the rules that apply in Luxembourg to construction and renovation work. The aim is to help homeowners, co-owners and landlords understand a topic before requesting quotes, without replacing official procedures or professional advice.
Topics range from presenting a technology — heat pumps, insulation, photovoltaics, charging stations — to more practical questions such as preparing a work site, points to check in a quote, or the administrative steps that accompany certain work.
How articles are written and sourced
Articles are written to be understandable for a non-specialist reader, without misleading simplification. We avoid figures that could quickly become outdated, in particular subsidy amounts or price ranges, which change with public decisions or market conditions. When a precise amount or condition is needed, the article points to the relevant official source, notably guichet.lu for housing subsidies and Klima-Agence for energy advice.
We rely on current regulatory texts, information published by Luxembourg administrations, and feedback from companies registered in our directory. Articles are reviewed and updated when regulations or schemes change significantly.
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Frequently asked questions
The Vert.lu blog in questions
Do blog articles replace professional advice?
No, they help you understand a topic before contacting a company or requesting energy advice, but they do not replace an assessment tailored to your property.
Where can I find the exact amounts of subsidies mentioned in an article?
Current amounts and conditions are published on guichet.lu. The blog explains how the schemes work but points to this source for official figures.
How do I know if an article is still up to date?
Articles are reviewed when regulations or schemes change significantly; if in doubt about a specific point, check with guichet.lu or Klima-Agence.
Is the blog linked to the quote request?
Yes, each article links, where relevant, to the matching quote request page and to the company profiles for the trade concerned.
This page's guide
Using the blog alongside the directory and quote requests
The blog is designed as a preparation step before contacting professionals. Reading an article on sizing a heat pump or on the criteria for a good insulation quote helps you arrive better informed at the discussion with a company, and to ask the right questions from the technical visit onward. Each article links, where relevant, to the quote request page matching the topic and to the company profiles for the trade concerned.
The link between reading and acting stays deliberately simple: you do not need to read everything before starting a request, but a better-prepared project generally leads to more precise quotes that are quicker to compare.
The subsidy guide as an entry point
For questions related to financing a project, the subsidy guide is the most complete entry point: it explains how Klimabonus Wunnen, which replaced the former PRIMe House programme in 2022, works, as well as the steps to follow depending on the type of work. Blog articles that address a specific subsidy consistently point to this guide and to the official fact sheets published by the administration, rather than repeating amounts that may no longer be current.