Microsoft unveils cross-laminated timber construction to slash carbon emissions by 35%

Posted on November 4, 2024   |  

Microsoft introduced a hybrid building method using cross-laminated timber (CLT) in its Virginia data centers, cutting embodied carbon by 35% compared to steel construction and 65% compared to precast concrete.

The new construction approach combines CLT with steel and concrete, moving away from typical data center materials that emit high levels of carbon, like steel and concrete.

CLT panels are created by gluing layers of timber at right angles, making them lighter and more fire-resistant. When exposed to heat, CLT forms a protective char layer, holding its structure longer than steel.

This timber project supports Microsoft’s pledge to become carbon-negative by 2030 and to offset all emissions since the company’s start in 1975 by 2050.

While mass timber is popular in European buildings, it’s less common in North American data centers due to safety and durability concerns. Microsoft’s project shows these obstacles can be managed.

As Microsoft’s data center growth has increased indirect emissions by 30.9% over the past three years, the company has also reduced its direct emissions by 6.3%, staying on track with its sustainability goals.

The off-site manufactured CLT panels in Virginia speed up construction, reduce carbon emissions, and provide a sustainable alternative to traditional building materials.