Committed model

Cement production alone accounts for 7% of CO₂ emissions worldwide. The new 0% clinker and low-energy cements developed by Hoffmann Green cut CO₂ emissions by almost 5 compared with traditional Portland cement (CEM I), thanks to a new industrial process of cold activation, without a kiln.

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This new plant, with a production capacity of 250,000 tonnes, compared with 50,000 tonnes for the industrial pilot plant, has been operational since summer 2023. Its vertical design reduces the land footprint and associated soil sealing, and preserves natural spaces. This vertical plant is designed for a gravity-fed production mode, using the materials’ own weight in the industrial process, enabling significant energy optimization.

Approval involves the certification of solutions that have already been standardized: H-IONA and slag ground at the Hoffmann Microtech plant. Certification involves continuous monitoring of performance consistency.

The second pillar of certification involves the evaluation of breakthrough solutions.


Bringing new cements to market involves a long and costly standardization process. Hoffmann Green is CSTB’s second largest customer after the French government. This close partnership now enables us to market low-carbon breakthrough innovations that offer the same guarantees and, at the very least, the same performance as traditional cements. This voluntary approach is carried out in full transparency to support the market in deploying these solutions.

For its contribution to carbon sinks, Hoffmann Green signed a partnership with Reforest’Action in 2018. Within this framework, Hoffmann Green supported the planting of 10,000 trees during the 2019-2020 season in Occitanie. Certified B Corp, Reforest’Action is a company with a social vocation created in 2010 by Stéphane Hallaire, whose first mission is to make as many people as possible aware of the power of forests and the need to protect them, and the second to take action by preserving and restoring forests in France and around the world.

In 50 years, resource extraction has more than tripled worldwide. In 2017, the world extracted nearly 44 billion tonnes of non-metallic minerals (sand, gravel, clay).
Quarried limestone is the raw material for traditional cements. A source of nuisance for the environment and local residents, quarries are also a threat to biodiversity. There are 3,600 active quarries in France, including around 500 that extract around 418,300 m³ of limestone per year.
The preservation of resources is at the heart of Hoffmann Green’s action. All solutions developed by Hoffmann Green use co-products (blast furnace slag, clay sludge, gypsum and desulfogypsum) as raw materials. In use, Hoffmann Green cements require no more sand and water than traditional cements.

Based entirely on the principles of the circular economy, Hoffmann cements’ production process valorizes industrial by-products, which become the main raw material for decarbonated cements. This virtuous approach is applied at every stage of the production process, which itself generates no waste. Incoming products are delivered by lorry, stored in tankers and transferred to the production line by automated conveyors. No packaging is used.

Individual interviews enable us to take stock of each employee’s position, potential career development and training needs. Given the company’s young age and size (52 employees in 2023), each position is new and unique. As a result, each employee has a defined area of competence and responsibility.

Following the IPO, Hoffmann Green’s Board of Directors decided to involve all employees in the company’s future development. All Hoffmann Green employees are shareholders in the company. Thus, 0.3% of the capital is held by employees.

Hoffmann Green favors long-term employment, with a predominance of open-ended contracts (98.8% in 2023), enabling long-term relationships to be built between the company and its employees. All employees are on long-term contracts, with the remainder on apprenticeship contracts that enable the gradual integration and training of young professionals.

Dust limitation has been the subject of specific treatment to guarantee air quality for operators in the plant. All production takes place in a closed process to limit air contact with the products. In December 2019, Carsat carried out an assessment of dust exposure. This provided an overview of the situation and the actions to be taken in this area in the first pilot plant. This initial feedback has been incorporated into the design of the H2 plant.

With the gradual increase in the number of employees, Hoffmann Green pays particular attention to collective dynamics and the well-being of each individual. Three group seminars are organized each year to share strategy and individual roles. At the same time, an annual interview on quality of life at work is organized, in addition to the individual interview. The aim is to discuss issues such as workload, work-life balance and job satisfaction.

Since 2022, Hoffmann Green has been pursuing the evaluation plan for its H-UKR cement, obtaining two new assessments issued by the public authority that sets the benchmark for quality, durability and safety in buildings.

These ATEx validate the use of H-UKR cement-based concrete for superstructure and foundation applications in all types of buildings: residential, public buildings (ERP), tertiary buildings, high-rise buildings, and so on.

These include footings, stringers, inverts, floors, columns, beams, walls and slabs.

Since 2025, H-UKR cement’s infrastructure applications have been validated by an Avis Technique (ATec).

To guarantee the quality of these new cements, Hoffmann Green has set up a quality control system at every stage of production. To coordinate this monitoring and guarantee the same level of standards, a number of people have been specifically recruited.

Hoffmann Green has developed a Quality Laboratory with a dedicated team working directly with the production teams. A laboratory has been set up on the production site to optimize quality monitoring. The new equipment deployed and the quality monitoring methodology have enabled H-IONA cements to obtain AFNOR certification.

In 2023, a quality laboratory was also deployed at the Hoffmann Microtech plant.

Carried out by the Centre Scientifique et Technique du Bâtiment (CSTB), technical assessments of products and materials (ETPM) guarantee the durability and mechanical performance of our cements. These ETPMs enable Hoffmann Green to obtain ATEx (Appraisations Techniques d’Expérimentation) certification. Created on the initiative of the CSTB and the construction industry, the ATEx is a rapid technical evaluation procedure formulated by a group of experts for any innovative product, process or equipment.