Solar fundamentals
Industry Term

Irradiance

Irradiance is the amount of solar power reaching a surface, usually measured in watts per square meter.

What does Irradiance mean?

Irradiance is the amount of solar power reaching a surface, usually measured in watts per square meter.

How does Irradiance affect PV system design, production, or customer expectations?

In solar projects, this term helps teams describe equipment, design assumptions, documentation, or field workflows with less ambiguity. Precise vocabulary reduces mistakes between sales, design, installation, inspection, and support.

Practical design considerations

  • Use the term consistently across product pages, technical documents, and support content.