Where I live, in a desert with a rain shadow ensuring clear skies most days? Sure, in my solar design class we took out a lightmeter and measured 1200W/m^2. May

Where I live, in a desert with a rain shadow ensuring clear skies most days? Sure, in my solar design class we took out a lightmeter and measured 1200W/m^2. Maybe on a good day it could push 1300W/m^2. In many other climates, 1000 is honestly a generous estimate. (Presumably they're aware and that's why they hedged by specifying peak power).