๐Ÿงฎ Calculators.com.bd
โ˜€๏ธ

Solar System Calculator

Size your solar panels, inverter and battery

โ˜€๏ธ Solar Special โ€” exclusive offer on this page only!

Select Your Appliances

Enter how many of each appliance you want to run on solar, and how long they run per day.

Ceiling Fan
W
hrs / day
LED Light Bulb
W
hrs / day
Refrigerator
W
hrs / day
Deep Freezer
W
hrs / day
Air Conditioner
W
hrs / day
Desktop Computer
W
hrs / day
Laptop
W
hrs / day
Home WiFi Router
W
hrs / day
Mobile Charger
W
hrs / day
LED TV
W
hrs / day
Washing Machine
W
hrs / day
Water Pump
W
hrs / day
Security Camera (per cam)
W
hrs / day
Microwave Oven
W
hrs / day
Electric Iron
W
hrs / day
Exhaust Fan
W
hrs / day

Frequently Asked Questions

How does the solar calculator size my system?
It adds up each appliance's wattage and daily run-hours to get your daily energy need, applies a 25% safety buffer, then divides by your local peak sun hours to size the panels. The inverter is sized to your peak load with a 25% buffer, and the battery to your daily energy with a depth-of-discharge buffer.
What are peak sun hours?
Peak sun hours are the number of hours per day when sunlight is strong enough to produce a panel's rated output. Bangladesh averages about 5 peak sun hours per day, which is the default used here.
Do I need a battery with my solar system?
A battery stores energy for use at night or during outages. If you only run appliances while the sun is out you may need little or no storage; for backup or night-time use, the calculator sizes a battery to cover your daily energy.
How accurate is the estimate?
It is an indicative sizing estimate based on standard formulas. For an exact system design and quote tailored to your roof, location and budget, use the "Request a Quote" button.


Select your appliances and get a recommended solar system sized to your needs.
๐Ÿ”ง Free solar site survey โ€” book this week and get 10% off installation. Get a quote โ†’

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