Not sure what size solar system you need? Our free solar energy calculator helps you estimate the solar panel system size, battery capacity, and inverter power required for your home or business.

Energy Consumption Calculator

10 W each

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75 W each

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150 W each

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100 W each

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65 W each

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1000 W each

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Frequently asked questions

On-grid systems are connected to the public electricity grid and reduce electricity bills, while off-grid systems rely on batteries and solar panels to operate independently.

Off-grid systems are ideal where power supply is unstable. On-grid systems are cheaper but depend on grid availability.

Estimate how long you use your appliances daily. Most homes average between 4–10 hours depending on usage patterns.

Batteries store solar energy for use at night or during outages, ensuring uninterrupted power supply.

Yes, solar systems are scalable. You can add more panels, batteries, or upgrade your inverter anytime.

Lithium batteries are lightweight, long-lasting, and require little maintenance but are more expensive. Dry cell batteries are maintenance-free, and commonly used for small devices but have lower capacity. Wet cell batteries are more affordable, and widely used for solar systems but require regular maintenance and proper ventilation.

Wet cell batteries are the cheapest option, dry cell batteries are moderately priced for small-scale use, while lithium batteries have the highest upfront cost but offer better long-term value due to their longer lifespan and higher efficiency.