# Off Grid Energy and Storage Balance

Estimate array and nominal storage for a daily AC demand and autonomy allowance.

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

Category: Solar & Battery

Off grid planning needs both daily generation and storage for the chosen autonomy period. They serve different parts of the energy budget.

Enter AC demand, sun hours and losses, then compare array and nominal storage requirements. Keep recovery after depleted storage in a separate design.

## Inputs and controls

* Daily AC consumption (kWh). Allowed range: 0.001 to 10000000
* Autonomy days (days). Allowed range: 0.01 to 100
* Energy allowance (%). Allowed range: 0 to 100
* Design peak sun hours (hours/day). Allowed range: 0.01 to 24
* Solar to AC yield factor (%). Allowed range: 0.01 to 100
* Usable battery DoD (%). Allowed range: 0.01 to 100
* Battery to AC efficiency (%). Allowed range: 0.01 to 100

## How to use

* Enter daily AC consumption, autonomy days and energy allowance.

* Enter design peak sun hours, solar to AC yield factor, usable battery DoD and battery to AC efficiency.

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


## Why use this tool

The energy balance makes demand and autonomy assumptions visible before more detailed system planning.


## Before relying on the result

Array covers entered daily demand and allowance; it does not include accelerated recovery after depleted autonomy days. Storage is nominal energy. Weather sequences, dispatch control, startup and equipment compatibility need a detailed design.


## Tool limitations

Array covers entered daily demand and allowance; it does not include accelerated recovery after depleted autonomy days. Storage is nominal energy. Weather sequences, dispatch control, startup and equipment compatibility need a detailed design.

## Questions

### Does the array include accelerated storage recovery?

No. It covers entered daily demand and allowance. Recovery after depleted autonomy days needs additional analysis.

### What should I check before using Off Grid Energy and Storage Balance?

Check Daily AC consumption, Autonomy days, Energy allowance and Design peak sun hours. Use the exact units shown beside the controls and replace any example values with your own inputs.

Source page last modified (UTC): 2026-10-01T18:56:36+00:00

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