The Finnish utility Fortum Oyj is building a heat recovery facility on the site of an under-construction Microsoft data center in Kirkkonummi, Finland. The Finnish market for Hot Aisle Containment (HAC) systems is positioned at a critical inflection point, shaped by the dual imperatives of digital infrastructure expansion and national sustainability mandates. By pairing computer processing facilities with district heating systems, countries like Finland and Sweden are trying to limit their environmental. Hot aisle containment consists of a physical barrier that guides hot exhaust airflow back to the AC return. Data centers — the beating heart of the digital economy — are now serving a double purpose: powering the world's cloud services and warming Finnish homes. Related: Hot aisle containment (HAC) is a.