Audit and Rehabilitation of Collective Solar Thermal Installations
ADEME supports local authorities, companies and associations owning a collective solar thermal installation that has stopped or produces less than 50% of the expected level, to fund an audit and then rehabilitation works; the 2026 aid is announced as open from 1 January to 31 December in the regions listed by ADEME.
This aid is for owners of collective solar thermal installations that have stopped working or produce far less than expected. It funds a two-step approach: diagnosing the faults, then carrying out rehabilitation works and organising the installation’s operation.
Funded by ADEME
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Who can apply
Local authorities, companies and associations owning a collective solar thermal installation with serious operating faults may be eligible. The priority targets cited by ADEME are social landlords, multi-unit housing (co-ownerships) and medico-social facilities such as care homes for older people (EHPAD).
Eligibility conditions
The installation must be completely stopped or produce less than 50% of its expected output, with significant operating faults. The project must start with an audit identifying the problems and costing corrective actions. Regional eligibility and criteria on area and commissioning date must be checked.
What the scheme covers
The aid can cover the preliminary audit, any project management and the rehabilitation works. The scheme also provides for an operating contract to be signed. The application must separate the cost of the audit, the project management services and the works budget.
Amount and funding terms
The amount depends notably on the installation’s characteristics and the accepted audit and rehabilitation costs. ADEME’s 2026 financing conditions are the reference for calculating the aid; no reliable cap figure is given in the catalogue.
How to apply
Select a consultancy based on ADEME’s specifications, without signing an order before checking the rules on when operations may start. Then submit on AGIR the technical and financial proposal and the required documents, detailing the planned costs for the audit, project management and works.
Timeline
ADEME’s 2026 page indicates a period from 1 January to 31 December 2026 and the status “aid running”. Geographical coverage does not necessarily include all regions; check the official list before commissioning studies.
Key facts
- Funder
- ADEME
- Type of funding
- Grant
- Status
- Open
- Funding rate
- 50%
- Automatically extracted — check the official source
- Closes
- 30 December 2026
- Geographic scope
- 16 régions
Frequently asked questions
Which installations are concerned?
A collective solar thermal installation that has stopped or produces less than 50% of its expected output, with serious operating faults.
Does the aid cover the works?
Yes, the scheme funds the preliminary audit and the rehabilitation works, under ADEME’s conditions.
Who has priority?
ADEME cites in particular social landlords, co-ownerships and the medico-social sector, including care homes for older people.
Should I order the audit before applying?
ADEME’s procedure asks you to pre-select an offer without committing or signing an order before applying.
Official source
Official ADEME page ↗(ademe_scraper)Applications are made from the official source (usually in French).
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