Store your solar. Run the DG set less. Stay within your contract demand.

BESS stands for battery energy storage system. It stores electricity in batteries and gives it back when you need it. A UnityESS unit brings together LFP battery racks, a battery management system, power conversion, cooling and fire protection in one cabinet or container, run by Unity EMS software.

Set up for backup, it carries the site through an outage with no fuel and no engine start, and unlike a DG set it also works every day, storing solar and covering peaks. Whether it replaces the generator or runs alongside it depends on how long your outages last. Many sites keep the generator as the last backup and run it less. UnityESS engineers size this from your outage pattern and DG logbook.

A UPS bridges a short gap for selected loads, usually computers and controls. A BESS stores hours of energy for much larger loads, and it works every day, not only in a power cut. Aura switches to backup in under 20 ms, per its datasheet. In a hospital or data centre, UnityESS engineers advise which loads should stay on a UPS.

By two numbers. Power, in kW, is the most load it must carry at once. Energy, in kWh, is that power multiplied by the hours it must carry it. UnityESS engineers work these out from your bills, contract demand, DG logbook and solar data. Larger systems are configurable, sized by UnityESS engineers.

Every UnityESS model uses LFP (lithium iron phosphate) cells, a stable chemistry widely used for stationary storage. Protection runs from a cell-level battery management system up to system-level protection. Each datasheet lists temperature and smoke detection with aerosol and flooding fire fighting, and the Ultima container adds an alarm bell and strobe. The standards named on every datasheet are IEC 62619, IEC 61000, UL 9540(A) and UN 38.3.

From the datasheets, width × depth × height: Aura is 1050 × 1050 × 2200 mm and 1,500 kg plus 100 kg. Aqua 4 is 1100 × 1320 × 2560 mm and 2,600 kg for 261 kWh, or 2200 × 1320 × 2560 mm and 4,150 kg for 522 kWh. Aqua 6 and Aqua 8 are 1690 × 1350 × 2400 mm and 3,800 kg, or 3400 × 1350 × 2400 mm and 6,600 kg. Ultima is a 6058 × 2436 × 2896 mm container of 40 to 49 tons. UnityESS’s civil drawings set the base it stands on.

The Aqua and Ultima datasheets rate the battery at 8,000 cycles. One cycle is one full charge and discharge, so the years you get depend on how often your system cycles. The Aura datasheet does not print a cycle figure; ask us and we will confirm it with your quote. Every datasheet gives a DC round-trip efficiency above 94%.

Aura has a solar input built in: up to 100 kW of panels at 650 to 800 V DC, on a single MPPT. Aqua and Ultima have no solar input of their own; they connect on the AC side, and UnityESS engineers confirm how they work with your existing solar plant.

Price on request. It depends on the power and storage you need, the model and the work at your site. Send your bills on WhatsApp; once UnityESS engineers have sized the system, we send you a quote.

UnityESS. Its engineers design, install and commission the system, Unity EMS monitors it around the clock, and UnityESS handles operation, maintenance and the warranty as per its terms. Solentra sells you the system and stays your point of contact.