How to Calculate Solar Panel Battery and Inverter?

Solar calculation for home

  1. Inverter
  2. Battery
  3. Solar panels

Step 1:- Home electrical load calculation?

Step 2:- Inverter Selection?

Step 3:-Battery Selection?

Step 4:-Solar Panel Selection?

Step 1:-

Home Electrical Load

4 Led Light    = 4x25 = 100W

2 fan              = 2x80 = 160W

1 Tube Light = 1x40 = 40W

1 Led TV        = 1x50 = 50W

Total Load = 350W

Step 2:- Inverter Battery

House Load: - 350W

Consider - 500W

However, Recommendation is 800-1000W best

AC load =350w

Battery DC Volt = 12V

 

DC current required

P = V x I

I=P/V

350W AC Load …DC current required (I) =29.17=30A

Step 3:- Battery Size Selection in AH

Formula:-W x H/V

Where: - W= Total load (350w)

H= Backup time in hours (8)

V= Battery voltage (12v)

=350X8/12=233AH

Battery Standard: - 250AH

Battery Select: - 250AH

Battery Charging Current

We will calculate charging current for 250AH battery .As we know that charging current should be 10% of the AH rating of Battery.

Therefore

Charging current for 250AH Battery

                       = 250X10%

                       = 25A

Solar panel Current =Battery charging current + Home load current

                                   = 25+30

                                   = 55 A

Solar plate’s power

Formula = V X I

                = 12 X 55

                = 660W

  1. Of Solar panels

340W Home load (AC) = 660W Solar panel required DC

The 660w Solar panel below is available in the market.

  1. 125w
  2. 180w
  3. 375w
  4. 440w

No. of solar plates =Total solar plates watt/single panel watts

=660/180

= 3.66 Approx. (4)

No. of solar plates:-4 panels (4x 180w)

350w home electrical load

Inverter: - 800-1000w

Battery: - 250Ah

Solar panels: - 4 X 180w

Leave a comment

Top selling products

Loom Solar Engineer VisitEngineer Visit
Loom Solar Engineer Visit 28 reviews
Sale priceRs. 1,000 Regular priceRs. 2,000
Reviews
Dealer RegistrationLoom Solar Dealer Registration
Loom Solar Dealer Registration 258 reviews
Sale priceRs. 1,000 Regular priceRs. 5,000
Reviews