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Our Story


Leilac was born from environmental technology company, Calix to solve one of humanity’s greatest global challenges: decarbonising cement and lime to accelerate the transition to a carbon neutral world. 

Leilac is the collaborative decarbonisation technology partner seeking to equip cement and lime producers with the tools to take urgent action against climate change and protect their industries’ jobs and prosperity.

Together, we can achieve the rapid creation of sustainable cement and lime for industry, humanity and our planet.


Leilac’s origins began in 2014 when Calix’s unique, indirectly heated calcination technology was patented for application in lime and cement. Over the following two years, Calix formed key partnerships with industry and academia to create and lead the first Low Emissions Intensity Lime And Cement project, Leilac-1.

Rigorous collaborative research and development, commencing in 2016, supported by €12m in funding from the European Union’s (EU) Horizon 2020 programme, led to the opening of a pilot plant, Leilac-1 in 2019. Located at the Heidelberg Materials (formerly HeidelbergCement) plant in Lixhe, Belgium, Leilac-1 successfully demonstrated separation of unavoidable process emissions from cement and lime production, with no additional chemicals or processes.


With ongoing support from partners in industry and academia, and an additional €16m in funding from the EU’s Horizon 2020 programme, Leilac-2 commenced in 2020. Once retrofitted to the Heidelberg Materials operational plant in Hanover, Germany, Leilac-2 aims to demonstrate a technology that can abate unavoidable CO₂ process emissions for the cement and lime industries at the lowest cost. It also aims to develop a module that can be applied at any scale.


Today, Leilac has been formed to rapidly commercialise and deploy the Leilac technology. It seeks to set the benchmark for the sustainable decarbonisation of cement and lime, with new carbon abatement projects in development across the globe. Its retrofittable modular design is being developed to scale to capture all of the unavoidable process emissions from any plant, while its potential to operate on a variety of energy sources – including electricity and alternative fuels – provides flexible and economical pathways to a carbon neutral world.

Leilac Technology Roadmap

to 2050

The Paris Agreement, ratified by 192 countries, aims to limit global temperature increase to below 1.5 degrees celsius. In support of this goal, the Leilac Technology Roadmap to 2050 provides cost-effective pathways to carbon neutral industrial production of cement and lime.

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