The challenge
A hospital cannot tolerate even a half-second gap. Theatres mid-surgery, ventilators, ICU monitors and imaging need power the instant the grid fails — not the 8 to 15 seconds a diesel set takes to start and accept load. Yet codes mandate that genset, and it sits beside wards emitting noise and fumes.
On top of the resilience problem, hospitals carry a large, steady, expensive electrical base load, so the demand charge is a significant and predictable cost.
Where storage pays off in Hospitals
Zero-gap critical backup
Sub-10ms switchover means theatres, ICUs and imaging never blink — true online protection for the loads that matter most.
Genset bridging & runtime reduction
Hold the load silently while gensets start and sync, and cut overall genset hours, testing and fuel.
Demand-charge & ToU savings
Shave the facility peak and arbitrage time-of-use tariffs on a large, steady base load.
Solar self-consumption
Store rooftop generation to serve a genuinely 24/7 facility, lowering both bills and carbon.
What a Hanum deployment looks like
A liquid-cooled cabinet on the essential or UPS bus serves the critical departments and bridges instantly to the existing diesel gensets. A second duty shaves the facility's demand peak the rest of the time.
| Bus | Essential / UPS bus |
| Switchover | < 10 ms, no gap |
| Pairs with | Existing diesel gensets |
| Extra duty | Demand-charge shaving |
Outcomes you can expect
- No-gap power to theatres, ICU and imaging
- Silent, fume-free backup beside patient areas
- Fewer genset hours, testing and fuel
- Lower demand charges on the base load
At a glance
Common questions for Hospitals
Yes. It sits on the essential/UPS bus and bridges instantly to your current diesel gensets — it complements your code-required backup rather than replacing it.
Those are exactly the loads it's sized for. The critical departments get true zero-gap protection; the genset then carries the longer outage once it's up.
Yes — it strengthens electrical resilience for critical care, which supports accreditation. We document the design and switchover performance for your compliance file.
Recommended systems
Hospitals use the Cabinet 500 for critical departments, scaling to the Container 5000 for large facilities.
Put storage to work in Hospitals
Send us your load profile, tariffs and site details and we'll model exactly how a Hanum system performs and pays back for your operation — lease or buy.
Get a free consultation