Solar thermal products

Solar thermal products

Solar KEYMARK Certification by DIN CERTCO

The Solar KEYMARK certification offers manufacturers of solar thermal products numerous opportunities for positioning and promotion in the European market. DIN CERTCO supports you on your path to certification.

Solar KEYMARK is a Europe-wide recognized quality label that provides consumers with guidance and builds trust. The following products can be certified with the Solar KEYMARK label:

  • Solar collectors, including PVT
  • Prefabricated and custom-made solar thermal systems
  • Hot water storage tanks (solar storage tanks)
  • Control devices for solar systems

Solar KEYMARK sends a clear message: "Tested and certified once - recognized across Europe!"

Strong Partnership for Your Success

The certification body DIN CERTCO works closely with the renowned ICC-SRCC (Solar Rating & Certification Corporation) to facilitate access to international markets for manufacturers of solar thermal products. This collaboration combines the strengths of both organizations: the extensive expertise of DIN CERTCO, a leading certification body in Europe, and the excellent brand recognition of ICC-SRCC in North America.

With this partnership, you can certify your solar thermal collectors with two internationally recognized certificates:

  • Solar KEYMARK - an established quality label for the European market that supports market positioning and acceptance.
  • ICC-SRCC OG-100 - an essential step for successful marketing in North America.

Through this collaboration, testing and certification processes are designed to be efficient and consistent, ensuring easy access to global markets.

Unified Certification for Success in Europe and Worldwide

The established quality label enables efficient and standardized marketing of your solar thermal products in Europe. At the same time, it facilitates access to other international markets by promoting transparency and comparability of technical standards.

Synergy Effects to Your Advantage

The collaboration between DIN CERTCO and ICC-SRCC provides a valuable foundation for establishing your solar thermal products in global markets. You benefit from:

  • Unified testing and certification procedures for the European and North American markets.
  • Enhanced market opportunities through combined certifications (Solar KEYMARK and ICC-SRCC OG-100).
  • Harmonized quality standards that make your products internationally competitive.

Enable your products to meet recognized standards and position yourself successfully in global markets.

Contact us - we will be happy to provide you with more information about your opportunities!

Testing and Certification Basis

The certification content and procedures are defined in a specific European certification program, which was developed in collaboration with the European Solar Thermal Industry Federation (ESTIF), the CEN (European Committee for Standardization) and other European certification bodies.

The testing standards for certification and the issuance of the Solar KEYMARK in combination with the "DIN-Geprüft" certification mark are based on the following European standards:

  • DIN EN ISO 9806 "Solar energy - Solar thermal collectors - Test methods"
  • DIN EN 12975 "Thermal solar systems and components - Collectors - Part 1: General requirements"
  • DIN EN 12976-1 and DIN EN 12976-2 "Thermal solar systems and components - Factory made systems"
    • "Part 1: General requirements"
    • "Part 2: Test methods"

The Solar KEYMARK certificate is valid for five years and can be extended for an additional five years. The prerequisite for renewal is passing the annual inspections (Factory Inspection) and the biennial product testing (Physical Inspection). Upon successful certification, you can label your products with the Solar KEYMARK in combination with the "DIN-Geprüft" mark.

Testing and Certification

For the awarding of the Solar KEYMARK, DIN CERTCO conducts testing and monitoring processes supported by recognized independent testing institutes. In addition to product testing, on-site production control is audited to ensure consistent quality. After successful certification, the quality is verified through annual surveillance audits.

Certification process for solar thermal products

Your Expert for the Certification of Solar Thermal Products

Benefit from the Solar KEYMARK certification, strengthen your customers' trust, and highlight your solar thermal products with a recognized quality label. DIN CERTCO is your reliable partner throughout the process.

We build trust for your market success! We are here for you!

FAQ – frequently asked questions about certification for solar thermal products

Would you like to know more about testing and certification for solar thermal products? We have answered the most common questions below.

Show all Hide all

1. What are the advantages of certification for my solar thermal products?

  • Increased trust among customers and business partners
  • Easier access to European markets
  • Basis for subsidies in European countries
  • Distinction from the competition
  • Internationally recognized and neutral certificate and quality mark

2. How long is the Solar KEYMARK certificate valid?

The KEYMARK certificate is valid for five years. If the results of the factory inspection and physical inspection are positive, the certificate can be extended by another five years.

A second extension is only possible after another type inspection. If the test results are positive, you can apply for certification extension to receive a new certificate.

3. If you would like to obtain the Solar KEYMARK for already certified products under your own name and registration number, you have the option to apply for an OBL Certificate (Own Brand Labelling) with DIN CERTCO. For this, we require the following documents from you:

4. How is a solar collector added to the BAFA list?

The Federal Office for Economic Affairs and Export Control (BAFA) maintains lists of eligible collectors and systems:

https://www.bafa.de/DE/Energie/Energieeffizienz/Energieeffizienz_und_Prozesswaerme/liste_foerderfae…

You can register your products via the Heat Generator Portal (WEP). For more information, please click here: BAFA - Förderprogramm im Überblick

General Documents

pdf Application form Solarthermal products 272 KB Download
pdf Declaration of agreement 63 KB Download
pdf General Terms and Conditions 327 KB Download
doc Report of Alteration of the Product 186 KB Download
pdf CEN CENELEC – Internal Regulations Part 4 – Certification (THE KEYMARK SYSTEM) 459 KB Download
pdf Brochure Solar KEYMARK (DIN CERTCO) 457 KB Download

Solar KEYMARK Scheme Rules

pdf Solar KEYMARK Scheme Rules (2025-12) 565 KB Download
pdf SKN N0863R0 - Annex P1 Collectors EN 12975 General 565 KB Download
pdf SKN N0864R0 - Annex P2 Collectors EN 12975 Technical documentation 108 KB Download
pdf SKN N0865R0 - Annex P3 Collectors EN 12975 Correction file 82 KB Download
xlsm SKN N0866R0 - Annex P4.1 ScenoCalc 6 MB Download
xlsm SKN N0866R0 - Annex P4.1 ScenoCalc – with DIN CERTCO Logo 6 MB Download
xlsm SKN N0867R0 - Annex P4.2 Aircow 883 KB Download
pdf SKN N0868R0 - Annex P4.2 AirCow Manual 3 MB Download
pdf SKN N0869R0 - Annex P5.1 PVT 225 KB Download
pdf SKN N0870R0 - Annex P5.2 Coloured Glass 769 KB Download
pdf SKN N0871R0 - Annex P5.3 Exchange Insulation 1 MB Download
pdf SKN N0872R0 - Annex P5.4 Hydraulic Designation Code 788 KB Download
pdf SKN N0873R0 - Annex P5.5 InSitu Testing 186 KB Download
xlsx SKN N0874R0 - Annex P5.6 Calculation Kd ISO 9806:2025 Annex C 55 KB Download
pdf SKN N0875R0 - Annex P5.8 Exchangeable absorber coatings 153 KB Download
pdf SKN N0876R0 - Annex Q1 Systems EN 12976 General 308 KB Download
pdf SKN N0877R0 - Annex Q2 Systems EN 12976 Technical documentation 151 KB Download
pdf SKN N0878R0 - Annex Q3 Correction file EN 12976 134 KB Download
xlsx SKN N0879R0 - Annex Q4 Datasheet Factory Made Systems 593 KB Download
xlsx SKN N0879R0 - Annex Q4 Datasheet Factory Made Systems - with DIN CERTCO Logo 593 KB Download
pdf SKN N0880R0 - Annex R1 Systems EN 12977 General 128 KB Download
pdf SKN N0881R0 - Annex R2 Systems EN 12977 Technical documentation 142 KB Download
pdf SKN N0882R0 - Annex R3 Systems EN 12977 Correction file 78 KB Download
xlsx SKN N0883R0 - Annex R4.1 Datasheet Store 100 KB Download
xlsx SKN N0884R0 - Annex R4.2 Datasheet Controller 81 KB Download
pdf SKN N885R0 - Annex R5.1 Application SolTherm 18 MB Download

Certificate Holder and Testing Laboratories

Certificate Holder

Solar Collectors

Read more

Certificate Holder

Solar Systems

Read more

Certificate Holder

Solar Water Stores

Read more

Certificate Holder

Solar Controllers

Read more

Testing Laboratories

The KEYMARK

Solar thermal products

Read more ...

Collector Output Label

Related topics

Solar Keymark

Solar Keymark Website Solar Heat Europe

Read more

KEYMARK

DIN Standards Committee

Responsible DIN working committee NA 041-01-56 AA "Solar systems"

Read more

These topics may also be of interest to you.

Heat Pump KEYMARK

DCLD Inspections for Dubai

Global Solar Certification Network

Contact

We are pleased to answer your questions

We are pleased to answer your questions

DIN CERTCO Gesellschaft für Konformitätsbewertung mbH