Explore free solar calculators for system sizing, electricity production, installation costs, battery storage, and savings. Choose a tool and start planning.
Find the right calculator for your solar project. All tools are free to use, with no signup required.
Estimate solar panel requirements and system capacity based on your electricity usage.
Estimate the cost of a solar system based on your country, system capacity, and battery options.
Explore estimated equipment, labor, and installation expenses to better understand your potential project budget.
Estimate how much electricity your solar panels could produce daily, monthly, and annually using sunlight and system assumptions.
Explore estimated solar savings, investment returns, and payback periods using your installation costs and electricity rates.
Estimate battery storage capacity based on electricity demand, backup duration, battery technology, and system voltage.
Plan an off-grid solar setup with estimates for solar panels, battery storage, inverter capacity, and charge controller requirements.
Calculate estimated voltage loss in electrical conductors and compare different wire sizes for DC and AC applications.
Find typical running and starting wattage values for common household appliances to help estimate electricity requirements.
Start with the Solar System Size Calculator to estimate how many panels you may need. Then explore solar production and installation costs.
Use the Solar Battery Bank Calculator to estimate storage needs, or the Off-Grid Solar Calculator for an independent power system.
For independent, location-based solar electricity production estimates, you can also explore the NREL PVWatts Calculator, developed by the U.S. National Renewable Energy Laboratory.
Get a practical starting estimate for your solar installation. Enter your electricity usage, explore different system options, and understand your potential solar requirements before requesting professional quotes.
Free to use · No signup required · Results are planning estimates