Microsoft's building data centres out of wood hoping we'll forget AI's made its carbon emissions 29% higher than when it pledged to go 'carbon negative' in 2020
Traditional data centre buildings are standard industrial constructions, with steel and concrete being the main materials. In a bid to reduce its carbon emissions, Microsoft is currently building two new data centres that use a hybrid wood construction, that the software company claims has a 35% lower carbon footprint than other standard designs.
Wood is perhaps the last material that one would associate with hulking servers and associated buildings, but that's precisely what's being used, according to a news report by Microsoft (via The Register).
Strictly speaking, it's using a kind of plywood called cross-laminar timber (CLT)—thick layers of wood glued together, with the grain of each piece at right angles to the one underneath it.
CLT has been around for a long time and it's a pretty decent building material: lighter than steel and concrete, with good thermal insulation properties.
It's also a lot more eco-friendly than precast concrete, partly because it can be made from a sustainable source but also because the process of making it generates far fewer carbon emissions than either steel or concrete.
It's this aspect of CLT that's the reason behind Microsoft's choice of using it for two new data centre builds in North Virginia, USA. Steel is still being used for the frame and concrete for the foundations, but most of the floors and ceiling (and possibly walls) are going to be CLT.
«The hybrid mass timber, steel and concrete construction model is estimated to significantly reduce the embodied carbon footprint of two new datacenters by 35 percent compared to conventional steel construction, and 65 percent compared to typical precast concrete,» says Microsoft.
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While I'm sure those figures are genuine for this particular project, it feels somewhat like a drop in the ocean compared to the overall carbon footprint of a typical data centre.
Depending on the size, such
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