Solar, wind and storage sites where cabinets run hot, arrays run far apart and the monitoring link has to stay up unattended.

A 12 MW solar site needed network equipment inside inverter cabinets that reach 60 °C, plus camera coverage along 900 m of array rows.
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Nine turbines on an exposed ridge were polled over a chain of copper links that failed in winter. Each tower base now has its own industrial PoE switch on a fibre ring, carrying SCADA polling, blade-inspection cameras and a met-mast link back to the substation.
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A roadside charging hub with 24 dispensers had payment terminals, cameras and dispenser controllers on one flat network. Industrial PoE switches under each canopy now separate payment, video and dispenser traffic, and a single fibre run carries all of it to the site router.
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