# Home Energy Load Planner

Build an appliance schedule and separate daily energy from connected running power.

[Open this tool](https://whatson.pk/load-calculator/)

Category: Solar & Battery

Daily electricity use and connected appliance power answer different planning questions. A fan running for several hours uses energy over time.

Build a schedule using quantities, running watts and operating hours. Use duty factors for appliances that cycle rather than treating them as continuously active.

## Inputs and controls

* Appliance
* Quantity (units). Allowed range: 1 to 10000
* Running power per unit (W). Allowed range: 0 to 1000000
* Daily operating time (hours). Allowed range: 0 to 24
* Duty factor (%). Allowed range: 0 to 100

## How to use

* Add the entries in appliance schedule as separate rows. Include appliance, quantity, running power per unit, daily operating time and duty factor for each row.

* Select Calculate result. Read the returned values alongside the assumptions below before copying, exporting or acting on the result.


## Why use this tool

The schedule keeps watts and daily energy separate, useful when checking a household's solar and backup requirements.


## Before relying on the result

Duty factor scales energy, not connected power. This schedule does not predict simultaneous demand or motor starting power.


## Tool limitations

Duty factor scales energy, not connected power. This schedule does not predict simultaneous demand or motor starting power.

## Questions

### Does connected power predict simultaneous demand?

No. It is the sum of listed running loads. Actual overlap and motor starting demand need separate assessment.

### What should I check before using Home Energy Load Planner?

Check Appliance, Quantity, Running power per unit and Daily operating time. Use the exact units shown beside the controls and replace any example values with your own inputs.

Source page last modified (UTC): 2026-10-01T18:56:35+00:00

This profile describes the tool. It does not execute it or supply a professional certification.