New MODERATOR Blog Post: Solar-Boosted Thermal Insulation

Storing low-temperature heat (35–65 °C) efficiently remains one of the biggest challenges for Europe’s clean energy transition. Heat stored in large tanks, whether for data centres, buildings, or greenhouses, often escapes through radiation and conduction, limiting its potential for reuse.

Our partners at Ophiolite are tackling this problem through the MODERATOR project with the development of a solar-boosted multilayer insulation system. Acting like a “super-blanket,” this innovative solution not only reduces heat loss but also captures additional solar energy to enhance overall efficiency.

The design combines:

• A reflective inner composite layer to trap heat inside.

• A low-conductivity middle layer to minimize thermal leakage.

• A solar-absorbing outer layer, made with upcycled mineral powders and lightweight glass-based fillers, to harvest external energy.

By integrating advanced modelling techniques, the Ophiolite team can simulate real-world conditions, from Greece to Iceland, to measure performance and durability.

This approach not only promises longer-lasting heat storage and reduced energy costs but also supports the EU’s circular economy goals by reusing waste materials from the renewable energy industry.

The next steps include testing under outdoor conditions such as wind, rain, and frost, as well as scaling up for pilot installations.

Read the full blog here.