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Power Fundamentals

PDU

Power Distribution Unit distributes power from upstream electrical infrastructure to racks, cabinets, or downstream panels. In data centers, PDU design affects branch-circuit capacity, metering, redundancy, maintenance, and how IT load is allocated across power paths.

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Distribution utility

Distribution utility owns or operates lower-voltage delivery facilities serving end users. For data centers, the distribution utility may handle service requests even when transmission upgrades or wholesale supply issues drive the real constraint.

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SWPPP

Stormwater Pollution Prevention Plan describes erosion, sediment, and pollution controls during construction under stormwater permit requirements. Large campuses and utility corridors often need SWPPP coordination before grading or land disturbance.

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Energization

Energization is the point when electrical facilities are made live and capable of receiving or delivering power. It is not the same as commercial operation, commissioning completion, or ready-for-service under a lease.

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