Labor Day closure

On Monday, September 1, 2025, Santa Ana City Hall will be closed and there will be no street sweeping. Learn more.

Who is NREL?

NREL stands for National Renewable Energy Lab, a national laboratory of the U.S. Department of Energy, About NREL|NREL. SolarAPP+ is an application developed by NREL that allows authorized contractors to submit plans for certain rooftop residential solar projects and receive permits and plan check documents instantly.

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