Heat reuse and community benefit
Turn reject heat into a metered product at the fence line, and into a benefit the community can see when the next site is proposed.
Communities are no longer asking data centres to be efficient. They are asking what the building gives back. Warm water at a usable grade, delivered to a named buyer through a contract-grade meter, is the most concrete answer available.
In Canada that question moved from sentiment to paper in September 2026. The federal Responsible Data Centre Development Principles, signed by twenty-three operators, cloud providers and AI companies, ask projects to prioritise waste heat recovery and to report local impacts in terms that are independently verifiable. Two Ontario councils paused data centre approvals the same summer. A named receiver and a metered hand-off are the part of that answer a cooling design can actually deliver.
We design for the buyer, not for the metric. A greenhouse, an aquaculture operation, a district network and an absorption chiller each have a temperature window, a load profile and a season. The loop is designed to return water inside the window of the buyer whose annual load profile and contracted availability best match the site, and the hand-off is metered at the data-centre boundary, as the EU's reporting regulation now requires for larger data centres there.
The cooling system never depends on the buyer. Every heat-reuse design keeps an independent rejection path, sized for the days the buyer stops taking heat, reduces demand or the connection is down.
Heat recovery can make your PUE worse: if export pumps and exchangers are counted as facility energy, PUE rises, and the exported heat is nowhere in the ratio. We report the Energy Reuse Factor (ERF) alongside PUE so the improvement to the energy system is visible in a number someone can audit.