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Size of solar panels

For the purposes of this guide, we are assuming that the solar energy generated by the panels will be stored in a battery or number of batteries. The basic principle is to identify the size of panel maintain sufficient charge of energy in your battery to support your typical usage requirement.

This tool is developed by mr. Jignesh Parmar, and available for FREE download:

Download: Right Here

Screenshot from tool: Calculate Size of Solar Panel, Battery Bank and Inverter
Screenshot from MS Excel Spreadsheet: Calculate Size of Solar Panel, Battery Bank and Inverter

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About Author


Edvard Csanyi

Electrical engineer, programmer and founder of EEP. Highly specialized for design of LV/MV switchgears and LV high power busbar trunking (<6300A) in power substations, commercial buildings and industry fascilities. Professional in AutoCAD programming. Present on


  1. mr phung
    Jul 19, 2018

    We are working on energy saving.

  2. Accesstel
    Sep 22, 2013

    can any one pls suggest how to down load excel files here. thanks

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