greenhouse gas emissions
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The Mercure Hotel MOA Berlin is set to become the first hotel and event location worldwide with a negative CO2 balance when generating heat.

This is thanks to the implementation of methane plasmalysis technology developed by Graforce, allowing the MOA Berlin to generate its heat without any emissions. It will also be able to extract CO2 from the atmosphere – while heating.

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The MOA Berlin is no longer heating with natural gas but with hydrogen from biogas. The methane plasmalysis technology splits the biogas into hydrogen and solid carbon. Using electricity from renewable energies, methane plasmalysis is just as climate-friendly as electrolysis – but the costs are significantly lower.

For the zero-emission heating process, the MOA Berlin uses modified gas condensing boilers fueled by a mixture of green hydrogen and biogas. The mixing ratio is controlled by the methane plasmalyzer. The heat generation is started with 30 vol.% hydrogen and 70 vol.% biogas. In the following months, the share of hydrogen will be gradually increased.

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The solid carbon can be used as an industrial raw material, for paints and ceramics or, as in the case of the MOA Berlin, for producing asphalt. Thus, CO2 is permanently bound.

The gas heaters used at the MOA Berlin before would have emitted up to 800 tons of CO2 per year. In order to absorb this amount from the atmosphere, the equivalent of more than 65,000 trees is needed.

“In order to counteract global warming, the generation of heat and hot water must be completely CO2-free by 2050. There are two ways to achieve this: Either we’ll heat with renewable electricity only or we decarbonise the natural gas supply with a carbon-free alternative such as hydrogen,” said Graforce founder and CTO Dr. Jens Hanke explains.