Embodied carbon

Embodied carbon is the greenhouse gas emissions released in producing, transporting, and installing a building's materials and equipment. These include concrete, steel, generators, switchgear and cabling, and are accounted separately from the operational carbon a data center emits from the electricity it consumes once running. For a typical data center, embodied carbon is dominated by concrete and steel in the structure and by the diesel generators, UPS batteries, and cooling plant, and it is all released up front during construction rather than amortized over decades like operational emissions. As grids decarbonize and operators increasingly buy renewable power or sign 24/7 carbon-free energy deals, embodied carbon's share of a facility's lifetime footprint rises in relative importance, prompting operators such as Meta, Google and Microsoft to publish embodied-carbon targets and favor lower-carbon concrete mixes, mass timber for non-technical space, and modular prefabrication that cuts on-site material waste. The EU's Corporate Sustainability Reporting Directive and emerging green building certifications increasingly require embodied-carbon disclosure alongside PUE and WUE, treating construction-phase emissions as a distinct line item developers must report and reduce, not just offset.