This is the VA equivalent of tsiPhaseAvailablePowerInW, the absolute-VA theoretical maximum this phase could deliver counting every valid module including redundant spares, mirroring the percentage figure in tsiPhaseAvailablePowerRatioVA. Like its watts counterpart, it matters mainly as an audit sanity-check figure rather than a safe planning target, since it assumes no redundancy is preserved. An admin cross-checking this system's module inventory would verify this figure matches a manual VA-based sum of every module assigned to that phase.