Off-Grid kW Calculator
Off-Grid Solar Calculator for Shop and Commercial Usage
For shops, offices, showrooms, clinics, schools, workshops and other businesses without grid power or with long power cuts. Share the equipment you run and for how long — including machines with motors — then enter your details, and our team will send you a detailed report on the off-grid inverter (kVA), the battery (Ah) and the solar plant (kW) you need.
For Atta Chakki and Oil Expeller applications, connect with our team.
For home usage, use our PM Surya Ghar calculator.
Your Appliances
Add what you want to run on solar.
Hours used in daytime = how long it runs while the sun is up (10 am to 4 pm, so 6 hours at most).
Hours used after 4 pm = how long it runs after 4 pm and through the night. With no grid, all of it comes from the battery.
LED tube light
Ceiling fan
Computer / billing system
CCTV (cameras + recorder)
Wi-Fi router
How it works
- 1
Enter your equipment
Lights, fans, computers, printers, fridges, ACs and more — with how long each runs in daytime (10 am to 4 pm) and after 4 pm. For a machine, choose “Other appliance” and pick its type of load and motor HP.
- 2
Enter your details
Press “Enter Details for Detailed Report” and add your name, mobile number and district.
- 3
Get your detailed report
Our team works out the off-grid inverter (kVA), the battery (Ah) and the solar plant (kW) for your equipment and sends you the report within one working day.
Off-grid or on-grid for your business?
An off-grid plant runs your business from solar and batteries, with no grid connection. It suits sites without grid power or with very long power cuts. If your shop or business has a grid connection, an on-grid plant with net billing usually gives the best return — see commercial solar. Our guide on-grid vs off-grid vs hybrid compares the three.