Imerys, Transform to perform

Energy & emissions


Sustainable development

Energy & emissions

The key source of greenhouse gas emissions from our operations is our fuel use. For several years, we have implemented action programs to improve the energy efficiency of its industrial activities and, as a result, reduce its greenhouse gas emissions. Moreover, Imerys’ activities may result in emissions of dust and particulates.

The Group considers the improvement of its energy efficiency as the main lever for reducing its greenhouse gas emissions. The use of thermal energy in mineral transformation operations (heating, drying, firing, sintering and calcining) is the main source of greenhouse gas emissions in the Group (54% of total). Indirect emissions relating to the consumption of electricity for production are the second largest source (38% of total). Finally, some of the processes used cause CO2 emissions themselves (8% of total), particularly through the decarbonation of raw materials. Imerys set itself the goal of improving energy efficiency by 10% over five years using 2009 as a baseline. The related reduction in CO2 emissions is reinforced by initiatives to use renewable energy sources in some of the Group’s units.

The work of the Energy team mainly focused on improving knowledge of the Group’s energy consumption and carbon emissions and setting up and tracking action plans undertaken on sites to improve process energy efficiency.

As far as dust emissions are concerned, our mining activities can generate fugitive dust emissions, which we control by measures such as spraying water on roads, installing sprinkler systems or planting vegetation.

We monitor the rollout of our three-year plan for Sustainable Development through performance indicators defined by internal experts.

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Consumption & Discharges

Manage properly water usage and limit waste production are part of our Sustainable Development goals.

Restoration & Biodiversity

We strive to lessen negative impacts of our mining and processing activities on biodiversity.


Constantly improving the environmental impact of our products and processes is a priority for our R&D programs.