HELP!-- Electrical Certification Troubles

Your posting lacks the details needed to help you.

The term "state inspectors" doesn't help. Most places I've worked, you are dealing either with a city or a county building inspector and/or a utility employee. And, yes, some of them apply their own interpretations of the rules, particularly when they have not worked with the systems very much.
So what is the official name of the office/department demanding the certification ?

Giving us more specifics on the UL certification "desired" and the model wind turbine you have, would help. The statement that Southwest is not UL certified does not help.  Companies are not certified, small wind turbines are. If I recall correctly, the Southwest Air 403 was the first small turbine to be UL certified. So what model do you have?

Also, what make and model is your diversion load ?