Erus Energy installed thousands of systems across Arizona and the Southwest. If your calls and emails now go nowhere, stop chasing the installer and start with the system: what state is it in, what is still under manufacturer warranty, and who is responsible for it next. All three have clean answers.
We respond within 1 business hour.

Homeowners in this spot burn months trying to make the old installer answer. The faster path runs the other way: establish what you own and what condition it is in, then attach service to it. Your equipment warranties are manufacturer contracts — panels commonly 25 years, inverters and micros 10–25 — exercised through certified companies regardless of the installer’s fate. Your system’s condition is established by one written inspection. And responsibility is a service relationship you choose, not something you inherit.
We are a licensed Arizona electrical contractor (ROC #331356), certified by Tesla, Sunrun, SunPower, SMA, SolarEdge, Enphase and APS. Work we do carries our 10-year workmanship warranty covering every nut, bolt and electrical connection we touch — so your system has a live warranty again, no matter what happened to the company that installed it.
The complete orphaned-system playbook.
What Arizona upkeep involves and costs.
The $299 written baseline everything else builds on.