BESS
Battery Energy Storage System stores energy for later discharge. In data centers, BESS can support UPS functions, peak management, backup, demand response, renewable integration, or grid services depending on design and interconnection.
Read definition →Power quality
Power quality describes whether voltage, frequency, waveform, and disturbances stay within acceptable limits for equipment operation. Poor power quality can affect IT uptime, UPS behavior, cooling equipment, and utility service obligations.
Read definition →Critical load
Critical load is the IT or facility load that must remain powered to avoid service interruption. It drives UPS, generator, switchgear, distribution, and redundancy design more directly than total campus load.
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