Serge Wilmes: Climate policy should become faster and simpler

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After a record summer, Luxembourg must brace for more frequent heatwaves. That is what Environment Minister Serge Wilmes says in an RTL interview. In that context, he points to scientific forecasts according to which the number of heatwave days could rise from around seven today to up to 20 days a year by 2050. By 2100, it could even be as many as 60 days. 

For Serge Wilmes, it is therefore clear: Luxembourg must better adapt to the consequences of climate change. At the same time, however, CO2 emissions must continue to fall. The government is focusing on faster implementation of climate measures.

152 measures for climate adaptation

The government has drawn up a climate adaptation strategy with 152 measures. One key focus is more greenery in cities and in public spaces. For larger construction projects, a minimum share of green areas is also to be mandated.

The renaturation of rivers and streams is also to progress more quickly. Ahead of the summer, 51 measures were set out for this. They are intended to help nature during heat and, at the same time, reduce the risk of flooding.

Better preparing schools and public buildings for heat

The hot summer has also shown that many buildings are not sufficiently designed for high temperatures. Schools, clinics and other public buildings are therefore to be gradually renovated to improve energy performance.

According to the environment minister, air conditioning can be a transitional solution in specific cases. In the long term, however, investment should above all go into the quality and renovation of buildings.

Pre-financing is intended to make investments in climate-friendly technologies easier. In parallel, the government wants to simplify the switch to climate-friendly technologies. The support for photovoltaic systems, heat pumps and energy-efficient renovations has been increased and extended until 2030.

As the next step, pre-financing is planned in these areas. This should mean that citizens no longer have to pay the full amount upfront. The subsidy would go directly to the company. The same is also to be introduced for electromobility.

Serge Wilmes: emissions fell by 3.5 percent

The environment minister also points to the development of CO₂ emissions. In 2025, these were down 3.5 percent compared with 2024.

For Serge Wilmes, this is a sign that the government’s climate policy is having an effect. However, the ambition remains to move forward more quickly. Climate action should be linked to procedures that are simple and easy for people to understand.

Subsidies: from 13 months to three months

Administrative processing times should also become faster. Just a year ago, it sometimes took 13 months for a subsidy for a photovoltaic system or a heat pump to be paid out.

Meanwhile, according to the environment minister, the processing time is around three months. The goal is to bring it down to one month. Together with pre-financing, this is intended to make investments in the energy transition more attractive.

Fossil energy support should be temporary

There was criticism of the government because fossil energies were also supported under the Tripartite agreement. Serge Wilmes defends this decision on the grounds of households’ purchasing power.

He says he accepted the support only on the condition that it remains limited in time and does not call the climate targets into question. According to calculations by Statec, the national climate targets can still be met despite the subsidisation of petrol, diesel and heating oil.

For the environment minister, the direction is therefore clear: Luxembourg must further reduce emissions while at the same time adapting more quickly to the consequences of climate change. The measures the government has set in motion should not only be effective, but also as easy as possible for citizens to implement.

Replay: 

Source: https://www.rtl.lu/news/national/serge-wilmes-emweltminister-1481765459

Audio file

FAQ: Climate policy and climate adaptation in Luxembourg

  • What does Environment Minister Serge Wilmes say about heatwaves in Luxembourg?

Serge Wilmes expects heatwaves in Luxembourg to become more frequent in the future. According to scientific forecasts, the number of heatwave days could rise from around seven today to about 20 days a year by 2050 and up to 60 days a year by 2100.

  • How does Luxembourg want to adapt to climate change?

The government has drawn up a climate adaptation strategy with 152 measures. These include, among other things, more green spaces in cities, greening public areas, renovating buildings, and faster re-naturalisation of rivers and streams.

  • Why are more green spaces in cities important?

More green spaces are intended to help reduce temperatures in cities and towns in summer. For larger construction projects, a minimum share of green space is also to be required in future.

  • What is planned for larger construction projects?

For construction projects of more than 20 ares, Serge Wilmes says a minimum of 10 percent green space is to be provided for in future. This rule is to be anchored in the Nature Conservation Act.

  • What is Luxembourg doing to better adapt rivers and streams to climate change?

Together with municipalities, the government has set out 51 measures to re-naturalise rivers and streams more quickly. This is intended to protect nature during heat and also help reduce the risk of flooding.

  • What is to be done about excessively high temperatures in schools and public buildings?

Schools and other public buildings are to be gradually renovated to improve energy efficiency. According to Serge Wilmes, air conditioning can be a transitional solution in specific cases, but in the long term the government is focusing on better insulated and renovated buildings.

  • Are air conditioners in Luxembourg subsidised by the state?

A specific subsidy for air conditioners is not currently planned. However, Serge Wilmes said the government is not ruling out any option for the future and that air conditioning can be justified in certain situations, for example for vulnerable people.

  • How does the state support photovoltaic systems, heat pumps and energy-efficient renovations?

State aid for photovoltaic installations, heat pumps and energy-efficient renovations has been increased and extended until 2030. The government wants to encourage more households to invest in climate-friendly technologies.

  • What does pre-financing mean for climate aid?

With the planned pre-financing, citizens would no longer have to pay the full amount for a heat pump, an energy-efficient renovation or another eligible investment upfront. The state subsidy would go directly to the contractor, so that the client’s initial investment is smaller.

  • Is pre-financing for e-mobility also planned?

Yes. In the interview, Serge Wilmes announced that pre-financing is also to be introduced for e-mobility.

  • How have CO₂ emissions developed in Luxembourg?

According to Serge Wilmes, CO₂ emissions fell by 3.5 percent in 2025 compared with 2024. The environment minister sees this as a sign that current climate policy is having an effect.

  • What is the goal of current climate policy?

The government wants to combine ambitious climate targets with simpler and faster procedures. For Serge Wilmes, the path to greater climate protection should be organised in such a way that citizens can be brought along and the transition remains practically feasible.

  • How long does it currently take for a climate subsidy to be paid out?

According to Serge Wilmes, the processing time for certain subsidies, for example for a photovoltaic system or a heat pump, has been reduced from up to 13 months to around three months. The government’s goal is to shorten this period to one month.

  • Why did the government temporarily support fossil energy despite climate targets?

Serge Wilmes justifies the temporary aid for petrol, diesel and other energy sources decided within the framework of the tripartite arrangement by the need to protect people’s purchasing power. For the environment minister, the condition was that these measures remain limited and do not call the achievement of the climate targets into question.

  • Can Luxembourg achieve its climate targets despite these temporary measures?

According to Serge Wilmes, Statec has calculated that Luxembourg can continue to meet its climate targets despite the limited support measures for fossil energy.

  • What are Serge Wilmes’s most important priorities in climate and environmental policy?

The key priorities are adapting to more heat and other consequences of climate change, reducing CO₂ emissions, more green spaces, re-naturalising rivers and streams, energy-efficient renovation of buildings, and simpler financial support for climate-friendly investments.