We have been operating under the same license number since 2003, been in the same zip code since then, and have never charged a customer who is out of warranty for a house call to troubleshoot issues.
Also, the license holder is at every installation we do. No other company can come close to this.
We also install primarily USA made products, currently Solaria modules and Mission Solar modules and pair that with SMA inverters, and sometimes SolarEdge when shading warrants it.
We also add to solar installs if they do not reach the output we estimate in the first year. We always have.