Heat Fund — Solar Thermal Hot Water Production Installation Support
Purpose: Meeting the objectives of developing renewable heat and reducing greenhouse gas (GHG) emissions; encouraging the replacement of fossil-fuel installations with equipment producing renewable heat and/or cooling; enabling renewable heat to compete with heat produced from fossil fuels. This scheme can be used until 30 June 2027. Beneficiaries mentioned in the catalogue: businesses of all sizes and types. The conditions, amount available and timetable must be compared with the applicable official version.
The “Heat Fund – Aid for installing solar thermal hot water production” scheme is part of the Heat Fund and concerns solar thermal hot water production. The ADEME official page consulted for 2026 presents aid for businesses and other categories of project holder, reviewed mainly by the regional offices. The application must demonstrate the useful collector area, solar productivity, the prior study and the sizing, monitoring and maintenance requirements. The date, scale and technical conditions must be checked in the applicable funding document before any commitment. An official source has been consulted.
Funded by Région Nouvelle-Aquitaine
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Who can apply
Beneficiaries indicated in the catalogue: businesses of all sizes and types. Check the legal form, size, activity, area, financial situation and exclusions in the official rules in force.
Eligibility conditions
Conditions available in the catalogue: the business must meet the following criteria — a prior feasibility study; compliance with sizing and production equipment requirements; achieving a minimum productivity level; compliance with performance monitoring and maintenance requirements; compliance with regulatory and standards requirements. They are not enough to confirm eligibility. Check the official criteria, exclusions, combination rules and any obligation to apply before ordering, purchasing or starting work.
What the scheme covers
Operations or costs mentioned: operations using liquid-circulation solar thermal collectors to produce hot water for collective housing, the tertiary, industrial and agricultural sectors, and operations linked to urban heat networks, with a useful collector area of between 25 m² and 500 m² for dedicated operations, and between 25 m² and 1,500 m² for heat networks. Check eligible costs, supporting documents, minimum thresholds, caps and excluded costs before any commitment. For Heat Fund schemes, technical sizing, energy production, the prior study and environmental performance may determine support; use the ADEME 2026 technical guide for the technology concerned.
Amount and funding terms
The catalogue indicates: For operations with a solar collector area of between 25 m² and 500 m²: aid of between €50 and €63 depending on the project location; for heat network operations with a solar collector area of 500 m² or more: indicative aid of between €25 and €40. The ADEME 2026 official page confirms that the scheme exists and its reference period, but the exact rate or amount must be read in the “eligibility and funding conditions” document for the project and technology.
How to apply
1) Identify the funder and obtain the up-to-date official fiche. 2) Confirm the status of the scheme, the criteria and the timetable. 3) Check the cost base, rates/caps, combination rules and documents. 4) Obtain prior approval before treating costs as eligible. Check the area threshold, productivity, eligible costs and how the aid is calculated in the 2026 technical document for the project.
Timeline
No usable end date is recorded; confirm the timetable with the funder. Confirm the deadline, the status of the call and budget availability with the funder. The 2026 official page presents Heat Fund aid for businesses, local authorities, public bodies and associations, open from 1 January 2026 to 31 December 2026. Prior contact with the ADEME regional office is advised; technical conditions and a 2026 funding guide are attached.
Key facts
- Funder
- Région Nouvelle-Aquitaine
- Type of funding
- Grant
- Status
- Ongoing
- Geographic scope
- Nouvelle-Aquitaine
Frequently asked questions
What is the Heat Fund – Aid for installing solar thermal hot water production scheme for?
The catalogue describes the following objective: meeting the objectives of developing renewable heat and reducing greenhouse gas (GHG) emissions; encouraging the replacement of fossil-fuel installations with equipment producing renewable heat and/or cooling; enabling renewable heat to compete with heat produced from fossil fuels. This scheme can be used until 30 June 2027. The project must fall within the official scope and meet the technical or financial criteria in force.
Who can benefit and what are the main conditions?
The catalogue mentions: businesses of all sizes and types. Also check the location, size and legal form, exclusions and, depending on the scheme, the technical or funding conditions.
What amount can be obtained?
For operations with a solar collector area of between 25 m² and 500 m²: aid of between €50 and €63 depending on the project location; for heat network operations with a solar collector area of 500 m² or more: indicative aid of between €25 and €40. The ADEME 2026 page confirms the scheme, but the scale must be checked in the 2026 technical conditions for the technology.
Is the scheme open and how do I apply?
No usable end date is recorded; confirm the timetable with the funder. The 2026 official page presents Heat Fund aid for businesses, local authorities, public bodies and associations, open from 1 January 2026 to 31 December 2026. Prior contact with the ADEME regional office is advised; technical conditions and a 2026 funding guide are attached. Before any order or spending, confirm the status, documents and procedure with the relevant authority.
Official source
No official URL is available in our data for this grant.
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