What is the Solar Keymark?

The Solar Keymark is a voluntary third-party certification mark for solar thermal products, owned by CEN/CENELEC.

Every certified product is in full conformity with the relevant European standards and fulfils additional requirements to assure constant quality. This level of quality is maintained by initial type testing and by regular controlled of the products and their production sites by independent inspectors. Consumers and authorities can fully rely on the certified products.

For these reasons the Solar Keymark is the basis for most European supporting schemes and it is also increasingly recognised or adapted worldwide.

The Solar Keymark can be currently granted to:

–        Solar collectors (according to EN 12975-1)

–        Factory made solar thermal systems (according to EN 12976-1)

–        Custom built solar systems thermal systems: solar water heaters and combisystems (according to EN 12977-1)

The Solar Keymark Background

In the 1990s the solar thermal market in Europe started to grow considerably, in part due to financial support programs in various countries. The European market grew quickly from 250.000 kWth to over 800.000 kWth of newly installed capacity per year.

Many companies started exporting their products into other European markets but found hurdles in the form of different requirements in the incentive programmes, that became an obstacle to market entry.

As a result, if a company wanted to sell one collector to different countries in Europe, it had to undergo several different tests and gain additional certificates and approvals.

This process was extremely complicated, expensive and cumbersome and hindered the development of solar thermal in Europe and the growth of solar thermal manufacturers.

In 2003 the European Solar Thermal Industry and major testing institutes formulated the Solar Keymark Scheme rules as a unified and simple solution in order to get solar thermal products recognised all over Europe.

This work was done on the framework of an EU co-financed project running from 2000 until 2003: Solar Keymark I (ALTENER – Solar Keymark – AL/2000/144).

This work was followed up by Solar Keymark II (EU-IEE (Solar Keymark II – EIE/05/052/SI2.420194).

After these two projects the Solar Keymark was the most successful Keymark scheme and more than two thirds of the collectors sold had Solar Keymark. Testing, inspection and certification were now organized into a single streamlined process and was recognised by authorities all over Europe.

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