Generator
What is the smallest generator that holds?
Viable, borderline and unsuitable thresholds based on the real peak. Average load, overload, litres and euros.
Generator & battery sizing
The right generator. The right battery. To the kW.
Before you rent a generator, measure. Before you invest in a battery, simulate. VISU Live tests over 130 generator × battery combinations on your real load curve, and recommends the cheapest one that holds the peak. In litres, euros and CO₂.
Measured demandReduced generator limitEnergy supplied by the battery
Real anonymised example: one week measured on the main switchboard of a large venue. Curve redrawn.
71kW
Measured peak
over one week, minute by minute37kW
Average load
barely half the peak100kVA
Generator needed alone
to hold the peak60 kVA
+ 100 kWh battery
Recommended combination−40% installed generator power4 calculation modes
One measurement, every option.
Each mode replays your measured week, minute by minute.
Generator + battery
Can a battery relieve the generator?
Two strategies: shave the peaks, or switch the generator off at low load overnight. Generator-off hours, fuel and CO₂ avoided.
Battery only
Can we do without a generator?
Minimum capacity required, autonomy, grid recharging over a chosen time window.
Sized hybrid
Which combination costs least?
Over 130 generator × battery combinations tested. The cheapest viable one is recommended, fuel and rental included.
Simulations use a catalogue of market generators and battery packs, with a “real load” consumption model.
Neutrality
The simulator can also say no.
VISU sells neither generators nor batteries. When a solution does not hold, the tool says so, with figures. You invest in what works, not in what someone wants to sell you.
4,214 kWhneeded to run without a generator
vs68 kWhin the pack tested
Verdict: unsuitableHow it works
Measure. Simulate. Decide.
- 01
Measure
The VISU Box records your site's real load, feeder by feeder. Installed in under an hour, with no shutdown.
- 02
Simulate
VISU Live replays the measured period with every generator × battery combination, and rules out those that do not hold.
- 03
Decide
You get the recommended combination in litres, euros and CO₂. A report ready to present.
Who it's for
For those who rent, install or fund power for sites and events
Take action
Simulate your site before you rent.
- 1A 30-minute call about your project
- 2A measurement period with the VISU Box
- 3The recommended generator + battery combination, with figures