Hybrid proposal readiness
Customer inputLoad Planning
The critical-load map that determines inverter power, battery energy and backup runtime.
Hybrid backup should be designed from a circuit and appliance list, not from the total electricity bill alone. Running watts, starting surge, simultaneous use, priority and required hours determine practical backup scope.
Collect
Gather complete and legible inputs
Verify
Check the site, equipment and current process
Record
Keep confirmed decisions in the project file
Why It Matters
How this information affects design, approval, cost and project reliability.
- Inverter kW determines how much load can run at one time.
- Battery kWh determines how long selected loads can operate.
- Motors and compressors can require much higher starting power than their normal running power.
- Separating essential and comfort loads keeps battery size and project cost practical.
- Future loads can change both power and energy requirements.
Complete Checklist
Everything that should be collected or confirmed for this readiness topic.
- Appliance or circuit name and quantity.
- Rated or measured running watts for each selected load.
- Starting surge information for pumps, refrigerators, motors and air-conditioners.
- Expected simultaneous-use combinations.
- Priority classification: essential, preferred or non-backup.
- Required backup hours for each operating scenario.
- Daytime, evening and overnight usage pattern.
- Future appliance, office equipment, pump or EV-charging plans.
Verification Process
The practical sequence used to review and confirm the information.
- Group appliances by circuit and backup priority.
- Calculate realistic simultaneous running power.
- Check the largest likely surge event against inverter capability.
- Estimate usable battery energy after reserve and conversion losses.
- Create normal, reduced and emergency backup scenarios.
- Confirm which circuits will move to the backup distribution board.
Common Issues to Avoid
Frequent gaps that cause redesign, delay, rejection or unrealistic expectations.
- All connected appliances are added together even though they do not run simultaneously.
- Starting surge is ignored for compressors, pumps and motors.
- Customer expects whole-house backup from a battery sized only for essential circuits.
- Runtime is quoted without stating load watts or battery reserve.
- Air-conditioners, geysers, cooking loads and pumps are included without cost or runtime impact.
Records Produced
The documents or outputs that should remain in the final project file.
- Critical-load schedule.
- Running and surge power summary.
- Backup-energy calculation.
- Essential, preferred and non-backup circuit list.
- Recommended inverter and usable battery range.
- Backup-runtime assumptions.
Ready When
The completion conditions that allow the proposal to move forward confidently.
- Every proposed backup load has a power estimate.
- Simultaneous use and largest surge are defined.
- Required backup hours are stated for a clear load scenario.
- Heavy loads are included intentionally or excluded explicitly.
- Future expansion expectations are documented.
Important planning note
Backup runtime is an estimate based on the agreed load scenario; actual runtime changes with appliance behavior, battery reserve, temperature, battery condition and available sunlight.