CoReCo

Executive Summary

Project develops a technology for magnetizable concrete cores for high-frequency solid-state transformers (SSTs), using recycled ferrite, nano materials and Ni, Co from battery waste. It reduces core losses by 35% compared to silicon steel, enabling compact, energy-efficient SSTs for data centers, EV charging, and renewable grids.

This project is all about turning waste into innovation. We’re recovering critical elements like nickel and cobalt, repurposing nanocrystalline cores, and using them to create unique solid-state transformers (SSTs) that operate at high frequencies (10 kHz–100 kHz). By integrating recycled raw materials—including iron-cobalt-nickel nanocrystalline waste—into modern energy transmission systems, we’re pioneering a sustainable and cost-effective approach to power distribution. This technology not only tackles waste management challenges but also boosts the efficiency of transformers, which are essential for electricity networks and data centers.

Why does this matter?

Energy transmission needs a major upgrade—especially in crowded urban areas where space is limited. Solid-state transformers help by reducing energy losses and eliminating the need for water cooling, which significantly lowers power demand. This directly improves Power Usage Effectiveness (PUE), a key measure of energy efficiency in data centers. The result? Lower costs, reduced carbon emissions, and more sustainable energy infrastructure. With this project, we’re delivering a cutting-edge high-efficiency solid-state transformer, proving that recycling and green innovation can power the future.

Project objective and scope

The project’s objective is to create a commercial-ready technology for magnetizable concrete (MBC) cores for high-frequency solid-state transformers (SST) that cut core losses by at least 35% compared to silicon steel (20–100 kHz range). This will lower energy losses, reduce size and weight, and cut operational costs. Earlier MBC mixes used MnZn ferrite from scrap and e-waste for wireless charging, but the project will enhance performance by incorporating nanocrystalline materials with high saturation induction. The estimated market for this product (MBC) is €148M that we can achieve.

Alignment with the strategy of EIT RawMaterials

Alignment with the EIT RawMaterials Strategic Agenda 2021–27: This project directly advances EIT RawMaterials’ overarching objectives by ensuring a secure, sustainable supply of critical raw materials (CRMs) and promoting a circular economy.