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Calculator

Panel Output Estimator

Estimate actual energy output from a solar panel or array based on location, tilt, orientation, and panel specifications.

Continuously maintained3 min read Focus Solar Editorial Team Reviewed for technical accuracy through the Focus Solar editorial process

Enter your panel wattage, location, tilt angle, and orientation to estimate annual energy generation in kWh. The estimator uses peak sun hour data to model realistic output rather than nameplate capacity.

YOUR INPUTS

Estimate panel output

Adjust the assumptions. Results update immediately.
W
Range 100–800
hours/day
Range 1–8
%
Range 0–40
panels
Range 1–500
Planning estimate only

How to use this estimate

This result is an early decision aid, not an approved electrical or structural design. Weather, shading, orientation, equipment efficiency, local rules, and actual product specifications can change the outcome.

Regional differences: Costs, taxes, incentives, tariffs, and grid rules vary by location and over time.

Read the calculation methodology →