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Calculate Size of Solar Panel, Battery Bank and Inverter
Calculate Size of Solar Panel, Battery Bank and Inverter

Design of solar panel / battery bank and inverter

This MS Excel spreadsheet calculates the following:

  • Total Demand Load
  • Size of Solar Panel
  • Select Type of Connection of Solar Panel
  • Select Rating of Each Solar Panel
  • Energy from Solar Panel as per Daily Sun lights
  • Size Battery Bank
  • Select Type of connection of Batteries in Battery Bank
  • Size of Inverter
Software:MS Excel Spreadsheet // Calculate Size of Solar Panel, Battery Bank and Inverter
Version:22.8.2012 New
Developer:Jignesh Parmar
Size:59.5 Kb
Price:Free
Download:Right here | Get Download Updates | Get Technical articles
MS Excel Spreadsheet // Calculate Size of Solar Panel, Battery Bank and Inverter
MS Excel Spreadsheet // Calculate Size of Solar Panel, Battery Bank and Inverter

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Page edited by E.C. (Google).

43 Comments


  1. Foluso Omolewa
    Jun 08, 2016

    This tool is of immense help Thank you for your effort. Could there be a mistake in the sizing of the inverter The calculation is given in kw thereby making the inverter very large. Can you please comment on this. Thank you.


  2. Nirav
    Jun 08, 2016

    I have seen the excel sheet, you have prepared for design of solar panel, inverter and battery bank and it is awesome.
    Here, my application is little different on solar water heater.
    I want to maintain the 70 C temperature of 50 liters (approx) water using 500 W DC heater for 24×7.
    I want to size the solar panel, battery bank, solar charge controller.

    Please kindly support.


  3. Anadi
    Jun 05, 2016

    Excellent initiative and great work by Jignesh Parmar.

    Can I have your contact nos, as i have to discuss a project where I find the no of batteries and Panels required is very large.


  4. herry
    Apr 19, 2016

    Hi Sir can you plz provide the calculation formulas for this excel.


  5. herry
    Apr 19, 2016

    Hi Sir can you please provide the calculation formulas of this excel.


  6. Parveen Kumar
    Apr 01, 2016

    i can’t download this…plz help me…


  7. Adem Ay
    Mar 26, 2016

    i glad to you, its very useful, i will try it as soon as


  8. Edward Gilmour
    Mar 26, 2016

    In considering a stand alone system where the battery is supplying all of the energy as the sun goes down; then consider solar PV as the recharger. It need to be addressed in the order Load + losses => Battery; then charger & PV solar; then consider days without sunlight and multiply accordingly.
    The issues are further complicated by considering the battery banks maximum charge current.
    Do that with lead acid and it gets truly massive!


  9. kamel shahpo
    Feb 01, 2016

    excellent work


  10. Cosmas Byela
    Oct 27, 2015

    Hi! I cant downlod the sheet link for calculator sixe of Solar pannel, Battery bank and Inverter.
    Please help me.
    Cosmas


  11. Amit
    Aug 27, 2015

    Hi ,
    Nice work still few things I would like to explain .

    Consider the power factor of Not only UPS but also for batteries .example.

    1000 va output will be 700 watts

    700 watts/.85 = x ▶ invt eff.

    X/.65= Y▶ batt. Eff.

    Y/Vdc = Z ▶ vdc is no. Of batteries x volt of battery.ex 12 volt x 3 battery= 36 vdc

    So Z x (Backup time needed ) say 3 hrs

    So for example it comes 15
    Multiply by 3 hrs

    So backup is 45 Ah

    HENCE , 3 BATTERIES ARE NEEDED FOR A 700 WATT LOAD ON A 3 BATTERY SYSTEM (36 VDC) for 3 hrs backup.

    Mail me at : amit@elnova.com
    http://www.elnova.com
    ,
    Nice work still few things I would like to explain .

    Consider the power factor of Not only UPS but also for batteries .example.

    1000 va output will be 700 watts

    700 watts/.85 = x ▶ invt eff.

    X/.65= Y▶ batt. Eff.

    Y/Vdc = Z ▶ vdc is no. Of batteries x volt of battery.ex 12 volt x 3 battery= 36 vdc

    So Z x (Backup time needed ) say 3 hrs

    So for example it comes 15
    Multiply by 3 hrs

    So backup is 45 Ah

    HENCE , 3 BATTERIES ARE NEEDED FOR A 700 WATT LOAD ON A 3 BATTERY SYSTEM (36 VDC) for 3 hrs backup.

    Mail me at : amit@elnova.com
    http://www.elnova.com


  12. Albert Allotey
    Jul 06, 2015

    Hi i cant download the excel sheet. link takes me to https://app.box.com/s/jgvhc07ssbap7x6udgwq and there’s nothing there. please help


  13. mayank tanwar
    Jun 13, 2015

    To calculate the size and power backup solution Batterybhai.com provides Power Calculator.


  14. Sergio B. Diasana
    Mar 09, 2015

    solar technology is the the best power savings at our time.


  15. Sergio B. Diasana
    Mar 09, 2015

    It is a very good site, to enhance our expertise and ability and be more professional.


  16. oladayo
    Jan 22, 2015

    i like this site

  17. Nice spreadsheet. This will definitely come in handy when calculating the size of your battery bank.


  18. Tunji Iromini
    Nov 14, 2014

    Hi,

    I observed that a corresponding increase in the battery backup time (autonomy) doesn’t affect the sizing of the solar arrays. In essence, a 24kW solar power (200W by 48V panels) is not affected despite increasing the number of days of backup power. The number of batteries increase but not the panels. I was expecting the solar panel side to flag an error but it remained green (ok) despite varying days of backup. Increase in batteries should automatically result into more panels to ensure batteries are adequately charged.

    Can you comment on my observation please?

    Regards,
    Tunji


    • solar magics firm
      May 30, 2015

      Very true, there’s no way you can add the batteries to cater for the days of autonomy and you fail to add solar panels. If only you add batteries, the system will not be getting enough charges therefore it is a must for solar panels to be added to the system.


      • Ajay Prakash Singh
        Feb 07, 2016

        dear sir,

        I am new in this field, and i want to learn how this calculator works for calculating the load. when i am using it, it ask for the password. i am having some knowlege of it but wish to know the way that how to calculate the size of solar panel, battery and inverter.

        please help


  19. abaho emma
    Oct 12, 2014

    thank you for your lessons and your calculations. i know how size now


  20. Pranav
    Sep 23, 2014

    useful calculator…should include DC load option…


  21. Ata Ur Rahman
    Sep 01, 2014

    dear
    this tool design on AC load but i need a tool that design for DC load.
    or any one can tell me that relation between DC and AC load.

    how i convert 1500W DC load to AC load to use this design tool

    DC….?…=AC…?…


  22. Taif
    Aug 06, 2014

    Hello Everyone and Technical members,

    I have a project of Installing Solar Power System on a Terris of a building having an area of 3000 sq ft. It is a 10 storey building having three flats/apartments on each floor with each flat/apartment has a load of 18420 watt hours or 18.42 kWh.

    It’s my project so I am facing problem to calculate what types of panels I should use to produce that much voltage by panels with installing batteries..

    Please help with this with the appropriate solar panel strategy or planning.

    You can also email me for further details if you want for this purpose.

    Thank you


  23. Ivan Mugabi
    Apr 22, 2014

    Interested in solar calculator


  24. Ebenezer Koranteng
    Nov 18, 2013

    I am yet to try your calculator.
    Thanks!


  25. Faruque Ahmad
    Sep 18, 2013

    Great tool!
    I tried to use this calculator for sizing solar panels in hybrid system for micro GSM BTS, but size of invertor is too big for total load of 500 W. For total load of 500 W with operational time 24 h per day, calculator gives size of invertor about 555 KW. I do not understand why. I guess there is mistake in cell which shows KW.
    Regards,


    • Femnas
      Apr 22, 2014

      I think there is some mistake….


  26. bath
    Aug 11, 2013

    This is the great site for EE in the web i have ever seen! Thanks to all the developers for sharing their great works.


  27. prashantrider
    Jul 17, 2013

    it goes on this link https://www.box.com/s/jgvhc07ssbap7x6udgwq
    the link doesnt work so cant download, ????

    • Edvard
      Edvard
      Jul 17, 2013

      You will see ‘Download’ button on top-right.


  28. prashantrider
    Jul 17, 2013

    cant download ??


  29. sajancq
    May 03, 2013

    Very useful, Thank’s


  30. Azra
    Mar 23, 2013

    Great tool!
    I tried to use this calculator for sizing solar panels in hybrid system for micro GSM BTS, but size of invertor is too big for total load of 500 W. For total load of 500 W with operational time 24 h per day, calculator gives size of invertor about 555 KW. I do not understand why. I guess there is mistake in cell which shows KW.
    Regards!
    Azra


  31. gsrsharma
    Dec 13, 2012

    it’s free tool but password protected !!!! … delicious food but in the showcase !!!


  32. etradz
    Nov 18, 2012

    Fabulous work.. This surely is a time saver..
    Regards
    Nick


  33. veerugvs
    May 03, 2012

    Really excellent job u r doing for the electrical engineers


  34. Mostafa Sharifi
    Apr 04, 2012

    Thanks alot


  35. sephirothn
    Mar 26, 2012

    Very useful, Thank’s


  36. zeeshan541
    Feb 05, 2012

    can tell u after using the tool


  37. projects416
    Jun 29, 2011

    Great Work! Thanks a lot

    • Edvard
      Edvard
      Jun 29, 2011

      You’re welcome! All credits goes to mr. Jignesh Parmar!

  38. […] requirement.This tool is developed by mr. Jignesh Parmar, and available for FREE download:Download: Right Here Tags: batteries, battery, calculate, download, energy, solar, solar panel Category: News, Solar […]

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