Simpson Engineering PLLC is an electrical engineering consulting firm based in Mesa, Arizona.  We are a family business operated by Dan and Tracy Simpson.

Our practice focuses on utility-scale solar photovoltaic (PV) and battery energy storage systems (BESS), as well as commercial and industrial power systems.  

We are experienced, easy to work with, and committed to excellence.  We provide practical engineering solutions with a straightforward, humble approach.  We believe simpler is better.