## 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 |

Developer: | Jignesh Parmar |

Size: | 59.5 Kb |

Price: | Free |

Download: | Right here | Video Courses | Membership | Download Updates |

can i ask password?

best regards.

This is great work,since it helps on designing an off grid system with a battery bank i thought it should also include the charge controller section.Most PV system builders struggle a lot when it comes to choosing the correct charge controller which works perfect for the system being built.

I don’t see that the calculation for battery bank size is related to the solar array? Shouldn’t the size of the battery bank reflect how much energy is collected by the solar array daily?

We need to understand the operation of solar panel calculation . Also requesting you to provide us the password

Your quick support will help us for proper configuration of Inverter Solar Systems

Thanks

Q1) Down loaded sheet, but asks for password. Can You please share the password?

Q2) Need to size batteries for a 50 KVA Hybrid Inverter / 360 VDC. Daily average load is 35 KW (AC Loads) for 8 hrs running per day (factory). Backup required for 6 hrs. during grid fail. Inverter efficiency 80%. Required EXIDE SOLAR BATTERIES.

please help with password and for (Q2)

Dear Saibal

As per my calculation & estimate you will require approx. 360 V 1100 Ah battery. We can provide. Please contact offline.

Dear SAIBA:

Did U get an answer to your 2 requests?

Vp

+258 82 604 5012

Consolidated Total Energy ( WH /day) – 28184

1- Battery Qty. =

2-Solar penal Qty. =

3-PCU Kwp. =

Can I ask for password?

can i have the password

Kindly assist I can’t edit as it is saying protected and need password.

I am searching for Protection system also solar.

I need software to calculate the solar system!

Thanhks! Best regards!

sir; I’m unable to understand MS (Excel Spreadsheet // Calculate Size of Solar Panel, Battery Bank and Inverter) please guide me

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.

Disregard the KW the size of the inverter is in watts

Really, I thought inverters are in KVA

For sure, this is an error. guess it must be in Wattage.

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.

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.

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

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

i can’t download this…plz help me…

send your mail ID, will send

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

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!

excellent work

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

Please help me.

Cosmas

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 : [email protected]

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 : [email protected]

http://www.elnova.com

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

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

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

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

i like this site

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

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

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.

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

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

useful calculator…should include DC load option…

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…?…

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

Interested in solar calculator

I am yet to try your calculator.

Thanks!

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,

I think there is some mistake….

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

it goes on this link https://www.box.com/s/jgvhc07ssbap7x6udgwq

the link doesnt work so cant download, ????

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

cant download ??

Very useful, Thank’s

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

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

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

Regards

Nick

Really excellent job u r doing for the electrical engineers

Thanks alot

Very useful, Thank’s

can tell u after using the tool

Great Work! Thanks a lot

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

Please help with password to unlock the protected cells