Inside the Earth’s Coolest Datacentres
summary
Data centres already use ~3% of global electricity and some forecasts push that toward 20% of planetary power, with one Mongolian site at 10.7 million sq ft using 150 MW and costing ~$3B. Real measures cited: glass doors and heat-recapture to warm a swimming pool, mountain and Arctic cooling sites, Microsoft's underwater pods, and Google reaching 100% renewable energy in 2017. Software levers include serverless scaling, microservice vs monolith tradeoffs, and JVM choice—OpenJ9 shows faster startup and smaller footprint, cutting runtime energy.
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