Free Calculators

Find the perfect solar generator for your specific appliances and usage patterns.

Calculate how long any battery will run your devices before needing a recharge.

Estimate the total cost of your off-grid solar system based on your energy needs.

Find the right inverter size for your appliances based on running and surge watts.

Calculate the right charge controller for your solar array and battery bank.

Calculate how many solar panels you need and plan your panel placement.

Calculate how long it takes to charge your generator with solar, AC, or car charging.

Project how much power your panels lose each year and what they'll produce in the future.

See how much power you lose to heat and how much a premium panel would recover.

See how partial shading affects output — and how wiring config changes the outcome.

Estimate energy losses from dust and pollen, with cleaning frequency recommendations.

Assess the risk of hotspots forming in your array — a potential fire hazard.

Calculate the true cost per kilowatt-hour delivered over a battery's full lifespan.

See how depth of discharge affects battery lifespan and cost per kWh delivered.

Estimate inverter lifespan and total 25-year cost of ownership based on load and environment.