Backup power
Backup power in the SpeicherCampus context: requires transfer, grid disconnection, a protection concept and load definition. Technically, the term is usually described as supplying defined loads during a grid outage.
What does backup power mean?
Backup power is the supply of defined loads during a grid outage. “Defined” is the decisive word: not the whole site keeps running, but the pre-planned backup circuits — controls, refrigeration, IT, gates, security systems.
Technically, backup power needs four building blocks: a transfer device (ideally an STS), clean grid disconnection from the public grid, a protection concept for island operation, and an energy reserve that matches the desired bridging time.
What matters in practice
- create a load list with power ratings and inrush currents
- set a realistic bridging time (hours, not days)
- plan PV recharging in island mode — it extends the reserve
- never promise backup power across the board: every concept is project-specific
Practical example
A logistics business defines gates, servers and a cold zone as its backup circuit (45 kW combined). With a 60 % reserve, the 215 kWh system lasts about three hours — enough for orderly operation until the grid returns or a generator starts.
The SpeicherCampus perspective
SpeicherCampus phrases backup power deliberately carefully: what keeps running is decided by planning, not by the datasheet. With its integrated STS, the OmniCube A215 provides the technical basis.