Online UPS and data centresA BESS battery storage application for business
How it works
A classic UPS is a cost that sits idle until the first fault. The lithium system does the same job but works in between — shifting load out of expensive hours and exporting surplus. Backup power turns from insurance into an asset that pays for itself.
Always inline
The load runs through the inverter continuously, so there is no transfer on a fault.
Working between faults
In normal operation the same battery does arbitrage and peak shaving.
Reserve kept
The EMS keeps a minimum charge that is never traded — it is there for the fault.
How it differs from a classic UPS
A classic UPS with lead-acid batteries waits for a fault and does nothing the rest of the time. Its batteries age whether they are used or not, and are replaced every few years.
A lithium iron phosphate system gives the same protection but lasts for thousands of cycles. So it can work every day — shifting consumption out of the expensive hours and shaving peaks — and still hold a reserve for a fault.
How the reserve is guaranteed
The EMS divides the capacity into two parts. One is used every day. The other is a minimum charge that is never traded and is kept solely for a fault. You decide how large it should be — according to the load and the time that has to be covered.
In an online configuration the load is supplied through the inverter at all times. In a fault there is no switchover, and sensitive equipment does not notice an interruption.
For data centres and critical loads
The systems go up to 625 kW and 1,305 kWh in a single configuration and are combined with a generator for long outages: the battery covers the first minutes and hours, the generator the rest.
Our projects include a data centre powered entirely by local generation and storage, with 24 hours of uninterrupted supply.
Questions and answers
Is there an interruption on switchover?
No. In an online configuration the load is supplied through the inverter continuously, and in a fault the transfer time is 0 ms.
Won’t daily operation use up the reserve for a fault?
No. The EMS keeps a minimum charge that is not used for arbitrage. Daily operation uses only the remaining part of the capacity.
Can the system replace a diesel generator?
For short and medium outages, yes. For outages lasting many hours the two are combined: the battery takes over immediately, and the generator starts up afterwards.
Want the same for your site?
Send your load profile and tariff — we return a configuration, a diagram and an indicative price.