Solar vs Generator Cost Calculator

Many people use both solar and generators for backup power. Comparing their rough daily energy output can clarify what each is good at.

This simple calculator estimates daily watt-hours from a small solar setup and from a generator based on how long you run it.

Solar vs. generator energy comparison

Compare estimated daily energy from a small solar setup with what a generator can provide using fuel.

Solar array size (watts)

Average sun hours per day

Generator rated watts

Generator run time per day (hours)

For more planning tools, you can also use the other calculators and guides on the GeneratorCalc home page.

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