Compare calculators

Both calculators run independently — change the inputs on either side to compare results.

Solar Panel System Calculator

Estimate how many solar panels you need to cover your home's electricity usage based on your location's sun hours and panel specs. Ideal for planning a residential rooftop solar installation.

Monthly Energy Usage (kWh)

Peak Sun Hours (hours/day)

Panel Wattage

System Efficiency

Fill in the required fields to see your result.

Electrical

Electrical Panel Load Calculator

Estimate the total ampere demand on an electrical panel by applying NEC-style load factors to lighting, receptacle, appliance, and motor circuits, then check it against the panel's main breaker rating. Ideal for panel schedule design, load additions, and service upgrade evaluations.

Panel Main Breaker Rating

Lighting Circuit Load (W)

Receptacle Circuit Load (W)

Appliance Circuit Load (W)

Motor Circuit Load (W)

Panel Voltage

Fill in the required fields to see your result.

Key differences

	Solar Panel System Calculator	Electrical Panel Load Calculator
Category	Electrical	Electrical
Inputs required	4	6
Result	Required Solar Panels (panels)	Calculated Panel Load (A)
What it does	Estimate how many solar panels you need to cover your home's electricity usage based on your location's sun hours and panel specs. Ideal for planning a residential rooftop solar installation.	Estimate the total ampere demand on an electrical panel by applying NEC-style load factors to lighting, receptacle, appliance, and motor circuits, then check it against the panel's main breaker rating. Ideal for panel schedule design, load additions, and service upgrade evaluations.