Solar Thermal Hot Water Production Installation
ADEME supports local authorities, companies, public bodies and associations with solar thermal hot water installations; the aid is a flat rate based on the installation’s area and geographical zone.
The Heat Fund (Fonds Chaleur) supports solar thermal installations producing hot water for a building or a process. The aid is a flat rate that depends on the collector area and the geographical zone, so the quality of the feasibility study is key to sizing the project and estimating useful solar output.
Funded by ADEME
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Who can apply
Local authorities, companies, public bodies and associations in all regions. Projects must aim to produce solar thermal hot water and meet the Heat Fund conditions.
Eligibility conditions
The applicant must show that it has looked at reducing needs, pooling heat needs and available waste heat sources. A feasibility study must establish the sizing and useful solar output before applying for investment aid.
What the scheme covers
Investment in a solar thermal hot water installation and the equipment directly needed for it to operate. The aid can be accompanied by feasibility studies, project management assistance and advice, but this entry covers the installation.
Amount and funding terms
The aid is calculated as a flat rate depending on the geographical zone and the area of the solar installation. The exact amount must be calculated from the scale “Solaire thermique eau chaude sanitaire – Conditions d’éligibilité et de financement – 2026”; the public page does not give a uniform percentage rate.
How to apply
Commission the feasibility study, estimate the collector area and useful solar output, then consult the 2026 flat-rate scale. Contact ADEME’s regional office and apply on AGIR before starting work, attaching the technical and financial information requested.
Timeline
Running from 1 January to 31 December 2026 in all regions. The flat-rate amount depends on area and zone; validate the calculation with ADEME before committing.
Key facts
- Funder
- ADEME
- Type of funding
- Grant
- Status
- Open
- Closes
- 30 December 2026
- Geographic scope
- All of France
Frequently asked questions
How is the amount calculated?
As a flat rate based on the area of the solar installation and its geographical zone.
Who can apply?
Local authorities, companies, public bodies and associations.
Is a feasibility study useful?
Yes, it confirms the sizing and useful solar output before investing.
What is the application period?
From 1 January to 31 December 2026, subject to the Heat Fund conditions.
Official source
Official ADEME page ↗(ademe_scraper)Applications are made from the official source (usually in French).
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