Committed

At KELSEN we explore the future together

WE ARE AWARE OF THE TECHNOLOGICAL AND SOCIAL CHALLENGES IN OUR ACTIVITY SECTOR AND WE TACKLE THEM WITH THE VERY STRICTEST CORPORATE RESPONSABILITY

Process efficiency

KELSEN is working on the complete automation of the control and production processes in order to optimize the service provided, reducing errors and speeding up their detection and correction, while improving energy efficiency, lowering costs and reducing associated emissions.

Sustainability

Aware of its responsibility, KELSEN works to achieve a more sustainable future, not only by reusing products generated by its own activity, but also by supporting our customers with the by-products of their activities.

Product ecodesign

Thanks to constant research and ecodesign, we seek to find profitable, efficient and environmentally sustainable responses to the needs of the sector. To succeed, KELSEN applies its knowledge, experience and laboratory equipped with avant-garde technology to the RESEARCH and DEVELOPMENT of new products.

Solutions for new energy models

The new energy sources will need new adapted refractory products. KELSEN therefore collaborates in benchmark innovation projects, researching every day to find a solution to our customers’ new needs and offer profitable, efficient and sustainable solutions.

Lower CO₂ emissions

CALCINOR and KELSEN have launched an action plan to meet the environmental commitments established across Europe for the coming years.

Commitment to People

KELSEN is committed to the development and wellbeing of its people. Through continuous training, improved working conditions and strong risk prevention practices, we aim to enhance safety, motivation and productivity while fostering a more efficient and sustainable workplace.

Governance and Corporate Ethics

KELSEN promotes integrity, transparency and accountability across all its operations, encouraging ethical conduct and fostering a culture of trust and regulatory compliance.

Sustainability

Sustainability at Kelsen

At Kelsen, sustainability is embedded in our strategy and in the way we work, as we move towards increasingly efficient and responsible operations. We measure our performance to drive continuous improvement and create a positive impact on our environment, our people and the future of our business.

Enduring materials, lasting planet

2025 in figures

330 MWh

Renewable electricity generated

Renewable energy supporting our decarbonisation journey.

3,488

Finished product tests

Continuous laboratory testing helps us ensure product quality.

136

People on our team

The knowledge and commitment of our people drive our development.

2,582 h

Training hours

We invest in knowledge to develop talent and drive continuous improvement.

ISO certifications

Certified management systems supporting our commitment to continuous improvement.

10%

Raw materials from recycled sources

We promote circularity by incorporating secondary materials into our products.

Downloads

Sustainability Reports

We report on our environmental, social and governance performance to transparently share our progress, initiatives and challenges.

2025

Sustainability Report

Download report

SUSTAINABILITY NEWS

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Kelsen sustainability measurable results

Sep. 2026

Kelsen advances its sustainability journey with measurable results

Kelsen presents its first Sustainability Report, covering the 2025 financial year. The report brings together the company’s main environmental, social…

Mar. 2026

Kelsen recognized with EMSTEEL’s first Sustainability Leaders Award

Kelsen has been awarded the first-ever Sustainability Leaders Award by EMSTEEL, one of the largest publicly traded steel and building…

$Refractarios Kelsen$

Jan. 2026

Kelsen 2025: key achievements and certifications in sustainability

Throughout 2025, Refractarios Kelsen has significantly strengthened its commitment to sustainability by enhancing its management systems, validating its environmental and…

Oct. 2025

Kelsen Awarded EcoVadis Gold Medal, Ranking Among the Top 5% of Companies in ESG Performance

Refractarios Kelsen has been recognized with the EcoVadis Gold Medal, one of the world’s leading sustainability rating agencies, which assesses…

ENERGY EFFICIENCY PROJECT

IMPROVED OUTDOOR LIGHTING SYSTEM.

Thanks to the work carried out under this project, KELSEN can now boast LED lights enabling it to reduce not only its electricity consumption, but also maintenance and replacement costs, given the extended lifespan of the new lights. Another aim of this project has been to upgrade illumination at the facilities, introducing more and better lighting to different areas. The project received EU backing through the European Regional Development Fund (FEDER) for the period 2014-2020.

ENERGY EFFICIENCY PROJECT

INSTALATION OF PHOTOVOLTAIC PANELS

Kelsen is committed to improving energy efficiency and using renewable energies in its daily activities. To this end, during the year 2023, it has invested in the installation of a 330 kWn photovoltaic plant, consisting of 724 panels of 460 Wp of monocrystalline solar PV technology. This investment has been supported by the Next Generation funds, promoted by the European Union, as well as the Basque Energy Agency (EVE) and the Ministry for Ecological Transition and the Demographic Challenge (IDAE).

RECOVERY, TRANSFORMATION AND RESILIENCE PLAN PROJECT

ENERGY REHABILITATION OF BUILDINGS

The project submitted by KELSEN focuses on improving the thermal efficiency of its facilities. As a result of this action, the building’s energy rating has been upgraded and energy savings of more than 30% have been achieved compared to the initial performance level. This investment has been supported by the European Union’s NextGeneration funds, as well as by the Basque Energy Agency (EVE) and the Ministry for Ecological Transition and Demographic Challenge (IDAE).