Hospital with UnityESS battery backup system
Applications · Hospitals

The grid that never goes dark.

Instant switchover, continuous power, and surgical suite backup for hospitals that cannot tolerate a single second of interruption.

The Challenge

When the power goes out,someone counts the seconds.

A grid failure in a hospital is not an inconvenience — it is a clinical event. Every second between the cut and the backup matters. For eleven years of night shifts, the nurse has counted to forty. The generator takes forty seconds to start.

⏱️

Generator switchover time

Diesel generators take 30–60 seconds to reach stable output. For a patient on a ventilator, in surgery, or in an ICU, those seconds are not downtime — they are a clinical emergency.

40 sec
Average time before a generator reaches stable voltage
🩺

Critical load continuity

Surgical suites, ICUs, NICU, ventilators, imaging equipment, blood banks — each has its own power sensitivity. A voltage spike on switchover can damage equipment or interrupt a procedure with no warning.

100%
Uptime requirement for surgical and ICU loads
🔋

UPS battery limitations

Hospital UPS systems are designed for minutes, not hours. When a grid failure extends beyond the UPS runtime and the generator has not started cleanly, the gap is unmanaged. Unity ESS closes it.

8–12 min
Typical UPS battery runtime before load drops to generator
The Solution

What changes whenUnity ESS is installed.

Not a list of features — what the ward feels different, what the facilities manager stops worrying about.

01
Sub-20ms switchover — no gap
The system transfers to battery in under 20 milliseconds. The lights do not flicker. The ventilator does not alarm. The surgical suite does not notice. The nurse stops counting.
02
Critical loads protected separately
Surgical suites, ICUs, and life-critical equipment are isolated on dedicated circuits. The system prioritises these loads automatically during any grid event, regardless of the rest of the facility.
03
The generator becomes the backup to the backup
The Unity ESS bridges the gap until the generator reaches stable output — cleanly, with no voltage spike, no transfer delay. The generator now does exactly what it was designed to do: be the last line of defence.
04
24/7 monitoring — someone is always watching
Our operations centre monitors battery health, load profile, and grid status around the clock. If anything changes — a cell degrading, a load spike, a grid anomaly — we know before it becomes a problem.
05
Blood bank and cold chain protection
Temperature-sensitive storage requires uninterrupted power. The system maintains continuous power to refrigeration loads through any grid event, protecting stored blood, vaccines, and medications.
06
Lifecycle planning, not just installation
We produce simulation reports showing system performance in year one, year five, and year twenty. The hospital administrator knows exactly what they are buying and for how long.

"The generator used to start three, four times a week. Since the Unity ESS system went in, the generator has not started once. The staff do not even know there have been grid events."

Facilities Manager · 350-bed private hospital, South India · Unity Aura installation · Year 1
Recommended Systems

Built forcritical infrastructure.

Two systems cover the full range of hospital load profiles — from a clinic to a 500-bed facility. Both deliver sub-20ms switchover and carry our 20-year service commitment.

Air cooled · Commercial & Healthcare

Unity Aura

100 kWh – 225 kWh · 25 kW – 65 kW

The standard choice for clinics, smaller hospitals, and critical-load isolation within a larger facility. Sub-20ms switchover. IP54 rated. Designed to run for 20 years in Indian ambient conditions.

Switchover<20 ms
ChemistryLFP 314Ah
Cycle life8,000+ cycles
ProtectionIP54
Best forClinics · Small hospitals
Liquid cooled · Large healthcare facilities

Unity Aqua

261 kWh – 2,170 kWh · 125 kW – 1,000 kW

For larger hospitals and multi-building healthcare campuses where the load profile exceeds a single Aura cabinet. Liquid cooled, IP66 rated, scalable to 12 units. Covers the full facility without gaps.

CoolingLiquid cooled
ChemistryLFP 314Ah
Cycle life8,000+ cycles
ProtectionIP66
Best forLarge hospitals · Campuses
Also Powering

Other applications.

UnityESS storage cabinets on a solar site at sunrise
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