Solar Panel Output in Isle of Eigg, Scotland

[RAD2]

Homework Statement

I have data for global irradiance on a fixed plane, diffuse irradiance on a fixed plane, global clear sky irradiance on a fixed plane, direct normal irradiance and clear sky direct normal irradiance. I need to calculate the solar power output but I don't know which irradiance to use? The location is in the isle of eigg in scotland. Any help would be greatly appreciated, sorry if I posted this in the wrong forum.

Homework Equations

E = Area * efficiency * Irradiance * Power Ratio

The Attempt at a Solution

 

[berkeman]

Welcome to the PF.

Is your solar panel fixed or tracking? It would seem you would need to take the weather into account, right? Maybe use a solar irradiance calculator to help?

http://solarelectricityhandbook.com/solar-irradiance.html

 

[RAD2]

Thank you for your response, yes it is fixed. Wasn't sure whether I take specific irradiances or just total them up and use the final value. Thanks for the help, will look into the calculator.