Profitability of solar thermal heating in northern France: what you need to know
Solar thermal heating, often overlooked compared to other renewable energies, reveals immense potential, especially in northern France. By 2025, with ambitions to quadruple solar heat production, this sector is emerging as an economic and eco-responsible solution. Let’s explore together the advantages and challenges of this green energy that could transform our heating and consumption practices.
A promising landscape for thermal solar
As part of the energy transition, solar thermal stands out for its efficiency. At a time when the need for energy autonomy becomes crucial, this technology allows individuals and businesses to reduce their dependence on fossil fuels. In France, the Enerplan union aims to increase solar heat production from 1.5 TWh in 2021 to 6 TWh per year by 2030. An ambitious goal that reflects an urgent need for transition.
A simple yet effective operation
The principle of solar thermal heating is based on using the sun to generate heat. This heat can be used to warm water intended for domestic consumption or for heating homes. Solar thermal installations, whether individual or collective, can achieve efficiencies close to 80%. Thanks to their ease of use, they are part of a commitment to provide natural and sustainable heating.
The profitability issue
Many still believe that thermal solar is not cost-effective. However, studies show that a well-designed and maintained installation can generate substantial savings over the long term. With heat production costs ranging from €57 to €200 excluding tax per MWh, solar thermal presents itself as a competitive alternative to traditional energies. Moreover, with government grants available, the return on investment is regularly estimated at between 10 and 13 years.
Installation cost: between €8,500 and €14,000 for 3 to 6 kWc
Financial aids from €1,500 to €2,500
Return on investment in 10 to 13 years
Regulatory challenges and opportunities
Despite its potential, the development of solar thermal in northern France is hindered by several regulatory factors. The RE2020 environmental regulation, for instance, does not sufficiently valorize solar heat. Additionally, areas under the protection of the Architects of France pose challenges for panel installations.
Efforts to improve existing installations
Another major challenge concerns existing solar heating installations. Many installations in condominiums are often poorly maintained, leading to decreased productivity. To address this, ADEME has launched a support program for the refurbishment of these systems. This opens the door for specialized actors, such as Monsieur Solaire, who are dedicated to the maintenance and renovation of collective solar installations.
The role of a dynamic ecosystem
France has a variety of players in the solar thermal field. Manufacturers such as Viessmann, GSE Integration, and Syrius Solar Industry contribute to this booming market. The development of a strong value chain makes it possible to envision a bright future for solar thermal in France. In 2023, the installed capacity already reached 2.4 million m² of solar thermal panels, with a dedicated workforce of nearly 3,000 direct jobs in the sector.
Type of installation | Installed area (m²) | Direct jobs |
|---|---|---|
Individual | 1.5 million | 1200 |
Collective | 800,000 | 800 |
Tertiary | 1.1 million | 1000 |
New uses of solar thermal
In addition to traditional uses such as hot water production or heating, new applications of solar thermal are emerging in various sectors. In agriculture, for example, the company Fengtech is developing innovative solutions using solar heat for building heating and hot water production. Their technology allows for energy autonomy lasting 5 to 6 months per year.
Industrial development
In the industrial sector, companies like Newheat are implementing urban and industrial heating installations based on solar thermal. This approach significantly reduces energy costs while minimizing carbon footprint.
Toward cold production
Another interesting aspect of solar thermal is its ability to produce cold. Through absorption cooling techniques, it is possible to harness solar heat to power cooling systems. Companies like the Danish Sabroe are working on innovative air conditioning systems based on this technology.
Production of sanitary hot water
Heating for agricultural buildings
Cooling systems using solar heat
Future challenges for solar thermal in northern France
As we approach 2025, many challenges arise for the future of solar thermal heating in northern France. Identifying urban planning needs and regulatory adaptations will be key elements to allow this technology to develop. Meanwhile, government support, particularly through grants and financial assistance, will remain crucial to reassure investors and encourage households to take the step toward greener energy.
At the same time, initiatives to raise public awareness of the importance of eco-responsibility and the benefits of solar systems must multiply. By anticipating these changes, we can see that the transition to green energy is underway, and solar thermal is one of its pillars. The combination of innovative solutions and the commitment of local actors, such as renewable energy producers and local authorities, will be essential to maximize installations in the coming years.
FAQ
What is the average cost of a solar thermal heating installation?
The average cost ranges from €8,500 to €14,000 for a 3 to 6 kWc installation, depending on the configuration of the system chosen.
What subsidies are available for solar thermal heating?
Individuals may benefit from financial assistance ranging from €1,500 to €2,500, depending on the project and household resources.
Is it possible to combine solar thermal with other heating systems?
Yes, solar thermal can be integrated with heating systems based on heat pumps or with traditional heating for enhanced efficiency.
What are the application sectors for solar thermal?
Solar thermal finds applications in residential, tertiary, agricultural, and industrial sectors, with solutions tailored to each need.
How to evaluate the profitability of a solar thermal heating installation?
It can be evaluated through a cost-benefit analysis considering the installation cost, savings achieved on bills, and available financial aids.